Entries |
Document | Title | Date |
20080264386 | METHOD AND APPARATUS FOR ATTENUATING FUEL PUMP NOISE IN A DIRECT INJECTION INTERNAL COMBUSTION CHAMBER - An apparatus for attenuating fuel pump noise in a direct injection internal combustion engine. In one proposal, the direct injection fuel nozzle is suspended from a fuel rail in a fashion that avoids direct metal-to-metal contact between the injector and the engine block. The direct injection nozzle may also be connected to the fuel rail by a pair of spaced-apart seals which equalize the longitudinal pressure on the nozzle during operation. Enlarged diameter fuel reservoirs and/or a restricted orifice may be provided fluidly in series between the fuel pump and the direct injection nozzle in order to attenuate noise resulting from fuel pump pulsation. A clip holder and clip plate mount the fuel injector to the injector cup. | 10-30-2008 |
20080271710 | Fuel supply device - The invention provides a fuel supply device, which is possible to prevent undesired water entered into a fuel path from remaining therein with a simple arrangement. A fuel supply pipe for supplying fuel to each of the fuel injection valves of an engine disposed with a plurality of cylinders in a vertical direction includes a fuel path in longitudinal direction, a smaller diameter portion formed perpendicular to the fuel path and continuous with a fuel injection valve mounting hole, and a cap attached to a lower end of the fuel path. The cap is arranged so that the upper end of its protruding portion is positioned at the same or nearly same level as that in height of the smaller diameter portion. Thus, the water entered in the fuel supply pipe is exhausted through the smaller diameter portion without delay. | 11-06-2008 |
20080295804 | Fuel delivery system for an aircraft engine - An engine includes a fuel delivery system having a fuel rail and fuel delivery devices, such as fuel injectors, that deliver fuel to corresponding cylinder assemblies. The use of the fuel rail and fuel injectors allows unused fuel to be purged from the engine at the end of the engine's operating cycle, thereby minimizing the creation of fuel vapor within the engine. The fuel delivery system also includes fuel rail coupling members that are constructed and arranged to secure each cylinder assembly to the fuel rail and to absorb load generated by the corresponding cylinder assembly on the fuel rail during operation. The fuel rail coupling members allow motion of the cylinder assemblies relative to the fuel rail during operation and minimize the application of potentially damaging forces on the fuel rail. | 12-04-2008 |
20080295805 | High Pressure Fuel Injector - The present invention relates to an internal combustion engine having a high pressure fuel injector ( | 12-04-2008 |
20080308068 | Fuel Inducted and Injected Inlet Runners for Combustion Engine with Flow Modifiers for Subdividing Fuel Droplets - A fuel delivery system for an internal combustion engine includes induction conduits of effectively equal flow resistance for guiding separate air and fuel streams to each of the cylinders of the engine. Each induction conduit includes at its entrance a sleeve venturi for inducing fuel into the air stream and a booster venturi. A fuel injector applies fuel at high pressure to the booster venturi. Flow modifiers may be positioned in the venturi throat and down stream of the venturi for modifying the flow of the stream of air after the fluid has been induced and injected into the stream of air for further subdividing the fuel vapor for increased effect of combustion of the fuel and air mixture. | 12-18-2008 |
20090007885 | METHOD FOR CONTROLLING THE OVERPRESSURE IN A FUEL-SUPPLY SYSTEM OF A COMMON-RAIL TYPE - A method for controlling the overpressure in a fuel-supply system of a common-rail type for an internal-combustion engine provided with a number of cylinders; the method has the steps of supplying fuel under pressure to a common rail connected to a number of injectors by means of a high-pressure pump; detecting the effective value of the pressure of the fuel within the common rail; comparing the effective value of the pressure of the fuel within the common rail with a safety value; determining a condition of emergency if the effective value of the pressure of the fuel within the common rail is higher than the safety value; and driving, in the case of emergency, the injectors for discharging part of the fuel present in the common rail so as to contain the increase in pressure of the fuel within the common rail. | 01-08-2009 |
20090025686 | FUEL INJECTION SYSTEM FOR INTERNAL COMBUSTION ENGINE - To provide a fuel injection system that can efficiently supply high pressure fuel with respect to fuel injectors of an internal combustion engine, whose pump is capable of being made versatile, and which has excellent maintainability such as service, replacement and detachment. | 01-29-2009 |
20090050111 | Nested Three Chambers, Fluid Pulsation Dampener - A reactive acoustic dampener includes a nested three chambered configuration and connecting tubes that may be fully integrated into the fuel rail of a fuel injection system. | 02-26-2009 |
20090050112 | METHOD AND DEVICE FOR CONTROLLING A PUMP CONNECTED TO A FUEL RAIL - In a method and a device for controlling a pump ( | 02-26-2009 |
20090064972 | FUEL INJECTION NOZZLE AND METHOD OF HOLDING THE SAME - A fuel injection nozzle for directly injecting fuel into a cylinder of an internal combustion engine is inserted in a connecting pipe extending from a fuel rail and is fixed to the connecting pipe by fastening member. The fuel injection nozzle has a sealing part for sealing a fuel passage to prevent fuel leakage, and a contact part in contact with the fastening member. The contact part is softer than the fastening member, and the contact part undergoes plastic deformation when a bending moment that bends the axis of the fuel injection nozzle acts on the fuel injection nozzle. | 03-12-2009 |
20090095258 | FUEL INJECTION SYSTEM - A fuel injection system for an internal combustion engine includes an engine management system, a return conduit connected to a low-pressure fuel system, and a common rail for storing and supplying a relatively high-pressure fuel to injectors. Each injector has a nozzle for injecting fuel into the engine, a valve installed between the common rail and the nozzle, and a spill valve connected by its inlet to the outlet of the valve and by its outlet to the return conduit. A first automatic isolating valve is installed between the common rail and the injector and a second automatic isolating valve is installed between the return conduit and the low-pressure fuel system. | 04-16-2009 |
20090107461 | Direct Injection Fuel System with Reservoir - A method of operating a fuel delivery system for an internal combustion engine is described. The system may include a plurality of direct cylinder injectors, a fuel rail upstream of the injectors, a first pump, and a second pump coupled downstream of the first pump and to the fuel rail. The method may include, after or during engine shutdown, and during a fuel system cool down, activating the first pump; and varying the activation of the first pump responsive to temperature to maintain a higher pressure for high temperatures. Alternatively, in some examples, the system may include a reservoir in a bypass around the second pump, the bypass having a valve downstream of the fuel reservoir, where the valve is positioned vertically above the second pump and the fuel reservoir is positioned vertically above the valve. The fuel reservoir may be sized to hold a sufficient amount of fuel in the bypass to allow fuel to migrate from the bypass to the fuel rail during engine cool down. | 04-30-2009 |
20090107462 | FUEL SYSTEM HAVING A ONE-PIECE HOLLOW TUBE CONNECTION - A fuel system for an engine including a cylinder head having a first bore and a second bore intersecting the first bore is disclosed. The fuel system includes a common rail and a fuel injector coupled to the cylinder head and at least partially received within the first bore. The fuel system also includes a one-piece hollow tube, extending linearly from the common rail to the fuel injector through the second bore. The one-piece hollow tube is configured to communicate high pressure fuel from the common rail to the fuel injector. | 04-30-2009 |
20090126690 | Fuel pump - Fuel pump for common rail engine comprises a plunger reciprocal within a bore to pressurize fuel within a chamber. A drive fir the plunger is co-operable with a cam rider so as to impart axial drive to the plunger while permitting lateral sliding movement of the cam rider. A plunger cycle includes a forward stroke, during which fuel within the chamber is pressurized, and a return stroke, during which the pump chamber fills with fuel at low pressure. The pump comprises a load-reducing arrangement for reducing the load on the drive due to fuel pressure within the chamber during that period of the forward stroke for which the relative velocity of sliding movement between the drive and the cam rider is at a minimum, thereby to reduce wear of the drive. | 05-21-2009 |
20090139488 | Diagnostic system for high pressure fuel system - A diagnostic system for an engine is disclosed. The diagnostic system has a sensor configured to sense a parameter of the fuel pressurized by the engine, and to generate a signal corresponding to a value of the parameter. The diagnostic system also has a controller in communication with the engine and the sensor. The controller is configured to detect a positive change in the parameter of the pressurized fuel and to inhibit starting of the engine if the positive change is not detected. | 06-04-2009 |
20090139489 | CONTROL METHOD OF A DIRECT INJECTION SYSTEM OF THE COMMON RAIL TYPE PROVIDED WITH A HIGH-PRESSURE FUEL PUMP - A control method of a direct injection system of the common rail in an internal combustion engine; the control method contemplates the steps of: feeding the pressurized fuel to a common rail by means of a high-pressure pump presenting at least one pumping element mechanically operated by a drive shaft of the internal combustion engine; measuring the angular position of the drive shaft; measuring the fuel pressure in the common rail; analyzing the oscillations of the fuel pressure in the common rail; and determining the phase of the pumping element of the high-pressure pump with respect to the drive shaft according to the oscillations of the fuel pressure in the common rail. | 06-04-2009 |
20090145404 | INJECTOR OF A FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - An injector with a double-switching control valve in which a valve body is guided in the housing of the control valve in a way that reduces the wear on a valve cone of the valve body and on a first valve seat in the housing of the control valve. | 06-11-2009 |
20090145405 | Jet for orifice damping - The present invention provides a jet for providing orifice damping in the fuel delivery system of a compression-ignition combustion engine, wherein the jet ( | 06-11-2009 |
20090159049 | INJECTOR MOUNTING STRUCTURE - A common rail and injectors are connected by fuel pipes disposed outside a cylinder head cover. The common rail and the plurality of injectors integrated by the fuel pipes can be detached from a cylinder head, so that the plurality of injectors are detached from the cylinder head together with the common rail. In removing the cylinder head cover for inspection work, therefore, release of the connections of the fuel pipes to the injectors and to the common rail can be eliminated to minimize the release of the connection of piping. | 06-25-2009 |
20090188468 | Modified common rail fuel injection system - A modified common rail fuel injection system, for diesel engines, is described, for use with slurry fuels comprising dissolved supplementary atomizing gases. Two separate high pressure fluid circuits are utilized to supply and operate the engine fuel injectors. A high pressure fuel circuit comprises, a high pressure pump delivering engine fuel into a fuel common rail, from which the fuel is delivered into each fuel injector, and from there into each engine combustion chamber. A high pressure hydraulic circuit comprises, a high pressure pump delivering hydraulic fluid into a hydraulic common rail, from which the hydraulic fluid acts on drivers of the injector valves, via timed on-off valves, to operate each fuel injector at the proper time in each engine cylinder cycle. Reliable operation of the fuel injectors is not impaired by slurry fuel degassing or slurry fuel particles. | 07-30-2009 |
20090188469 | FUEL INJECTOR FOR INTERAL COMBUSTION ENGINE - Disclosed herein is a fuel injector for an internal combustion engine, which can achieve the improved responsiveness to the target fuel pressure as well as the improved controllability even when the fuel pressure is greatly decreased. | 07-30-2009 |
20090194072 | Two wire intensified common rail fuel system - A fuel system includes a plurality of fuel injectors fluidly connected to a common rail. Each of the fuel injectors has at least one body component and includes an intensifier control valve for controlling movement of an intensifier piston, a needle control valve for controlling movement of a needle valve member, and exactly one electrical actuator coupled with the intensifier control valve and the needle control valve via a coupling linkage. The intensifier control valve and the needle control valve each include a valve member that is movable with respect to a valve seat. The electrical actuator includes an intermediate position during which the valve member of one of the intensifier control valve and the needle control valve is in contact with the respective valve seat, and the valve member of the other of the intensifier control valve and the needle control valve is out of contact with the respective valve seat. | 08-06-2009 |
20090199822 | FUEL DELIVERY SYSTEM FOR HEATING FUEL THEREIN - A fuel delivery system comprises a fuel rail having a flow channel therein. The fuel delivery system further comprises a fuel injector cup that includes a base at a first end thereof, an opening at a second end thereof opposite the first end, and an inner cavity disposed between the base and the opening. The first end of the fuel injector cup is configured to be disposed within the flow channel of the fuel rail. The fuel delivery system further comprises a heating element. The fuel rail of the fuel delivery system further includes a port therein that is configured for receiving the heating element. Additionally, the fuel injector cup of the fuel delivery system further includes an aperture therein also configured for receiving the heating element. | 08-13-2009 |
20090241903 | CAM ASSISTED COMMON RAIL FUEL SYSTEM AND ENGINE USING SAME - A fuel system for an internal combustion engine includes a plurality of nozzle groups and a plurality of pump groups. A common rail is fluidly connected with each of the nozzle groups, and each of the pump groups includes a mechanically actuated pressure intensifier having a tappet which can selectively intensify a fuel injection pressure in a corresponding one of the nozzle groups. Each of the mechanically actuated pressure intensifiers is movable in response to rotation of a cam, and includes a spill valve having a first position at which fuel is displaced from the pump group to a low pressure space and a second position at which fuel is displaced to a corresponding one of the nozzle groups. | 10-01-2009 |
20090255511 | FUEL DELIVERY SYSTEM - A fuel delivery system for an internal combustion engine, the system comprising a common rail fuel reservoir having a primary rail axis and comprising a plurality of outlets at spaced locations along said rail axis and a plurality of fuel injectors arranged at spaced locations with respect to said rail axis. Each injector comprises an injector inlet, said plurality of fuel injectors defining first and second groups of injectors. The system further comprises first and second groups of pipes of substantially equal length, wherein each of said first group of pipes is of a first common design and connects the injector inlet of one of said first group of fuel injectors to an outlet displaced relative to said one of said first group of fuel injectors in a first direction substantially parallel to said rail axis, and each of said second group of pipes is of a second common design and connects the injector inlet of one of said second group of fuel injectors to an outlet displaced relative to said one of said second group of fuel injectors in a second direction substantially parallel to said rail axis and antiparallel to said first direction. Not more than one of said first group of injectors is disposed adjacent to said second group of injectors. | 10-15-2009 |
20090277421 | FUEL INJECTOR - The invention relates to a fuel injector, in particular a common rail injector, for injecting fuel into a combustion chamber of an internal combustion engine. The fuel injector has an injection valve element which is adjustable between a closing position and an opening position and which is switchable by means of a control valve. The control valve has a sleevelike control valve element that is adjustable along an adjustment axis and in its closing position rests sealingly on a control valve seat element. According to the invention, it is provided that the control valve seat element is disposed movably relative to the adjustment axis of the control valve element. | 11-12-2009 |
20090293844 | Pressure-controlling electromagnetic valve for distinct electromagnetic and hydraulic units - The pressure controlling electromagnetic valve comprises an electric sub-assembly ( | 12-03-2009 |
20090308351 | High Pressure Fuel Supply Control System for Internal Combustion Engine - A high pressure fuel supply control system for an internal combustion engine is provided which can reduce shot-to-shot varieties in the quantity of fuel discharged by a high pressure fuel pump and fuel pressure pulsation, thereby realizing stable fuel combustion and emission performance. The fuel supply control system for an internal combustion engine includes fuel injectors provided for a common rail and a high pressure fuel pump for pressure-feeding the fuel sent out from a low-pressure fuel pump to the common rail. The high pressure fuel pump includes a pressurized chamber, a plunger for pressurizing the fuel in the pressurized chamber, a fuel passage valve provided in the pressurized chamber, and an actuator for operating the fuel passage valve. The control system has a drive signal calculation unit which calculates a drive signal for driving the actuator so as to control the discharge quantity of the high pressure fuel pump and the pressure in the common rail. The drive signal calculation unit has a means of keeping the discharge quantity of the high pressure fuel pump equal to or larger than a prescribed value. | 12-17-2009 |
20090314256 | SKID ARCHITECTURE FOR A POWER AUGMENTATION SYSTEM - A fluid delivery skid with a pre-fill system for supplying fluid has one or more stages including a first valve and a second valve, each having an open and closed position. The stages have active and inactive states to provide a desired flow rate of fluid to an apparatus for distribution of the fluid. In an active state, fluid is received in the stage and pressurized with the first valve open and the second valve closed. Further, in an active state, fluid is released with the first valve closed and the second open. In an inactive state, at least the second valve is closed. A control unit is connected to a pump unit and controls operation of the pump to regulate the stages to supply pressure at a level determined to achieve the desired flow rate. | 12-24-2009 |
20090320797 | ELECTROMAGNETIC PROPORTIONAL CONTROL VALVE FOR FLOW RATE CONTROL AND FUEL SUPPLY PUMP - To provide an electromagnetic proportional control valve for flow rate control that can stably control the flow rate of a fluid without hindering the smooth axial direction movement of a mover and a fuel supply pump that is disposed with this electromagnetic proportional control valve. | 12-31-2009 |
20090320798 | METHOD FOR DETERMINING A RAIL PRESSURE SETPOINT VALUE - In a method for determining a rail pressure setpoint value for a high-pressure rail of an internal combustion engine, the rail pressure setpoint value is modified to a maximum degree using a maximum gradient for changing the rail pressure setpoint value, and the maximum gradient is read from a characteristics map as a function of operating parameters of the internal combustion engine. The operating parameters include an engaged gear of a gear-change transmission. | 12-31-2009 |
20100024773 | METHOD FOR AUTOMATIC PRESSURE CONTROL - A method for automatically controlling the pressure of a common rail system on an A side and a common rail system on a B side of a V-type internal combustion engine, in which the rail pressure (pCR(A)) of the common rail system on the A side is automatically controlled by an A-side closed-loop pressure control system, and the rail pressure (pCR(B)) of the common rail system on the B side is automatically controlled by a B-side closed-loop pressure control system. The automatic control of each side is independent of the other. A common set rail pressure is set as a reference input for both closed-loop pressure control systems. A set injection quantity is computed by a speed controller as a function of an actual speed relative to a set speed, and a common disturbance variable is computed as a function of the set injection quantity. Both the correcting variable of the A-side pressure controller and the correcting variable of the B-side pressure controller are corrected by the common disturbance variable. | 02-04-2010 |
20100050990 | INJECTOR FOR INJECTING FUEL INTO COMBUSTION CHAMBERS OF INTERNAL COMBUSTION ENGINES - The invention relates to an injector for injecting fuel into combustion chambers of internal combustion engines, in particular a common rail injector. The injector has a high-pressure region and a valve element which is axially adjustable between a closed position and an open position in which the flow of fuel is enabled. According to the invention, it is provided that the valve element includes a first partial element and at least one separate second partial element, which partial elements are hydraulically coupled to one another by a coupler chamber. The coupler chamber is hydraulically connected only in one axial direction to the high-pressure region of the injector. | 03-04-2010 |
20100071663 | EXTERNAL RIGID FUEL MANIFOLD - A fuel manifold of a gas turbine engine includes a tube assembly having substantially rigid inner tubes disposed inside of substantially rigid outer tubes in pairs, concentrically spaced apart by a spacer apparatus. The inner tubes form a primary fuel passage for directing a primary fuel flow and the outer tubes form a secondary fuel passage for directing a secondary fuel flow, the secondary flow being greater than the primary flow. | 03-25-2010 |
20100071664 | APPARATUS FOR REDUCING THE TRANSMISSION FOR NOISE FROM THE FUEL RAIL IN A DIRECT INJECTION ENGINE - An apparatus which reduces engine noise caused by vibration of the fuel rail in a direct injection internal combustion engine. The apparatus includes a holder which supports a fuel inlet end of the fuel injector in the fuel cup on the fuel rail so that the fuel injector is in alignment with the direct injection fuel port in the engine head. A vibration isolator is sandwiched in between the holder and either the engine head or the fuel cup to reduce the transmission of vibration from the fuel rail to the engine head. | 03-25-2010 |
20100071665 | INJECTOR WITH AXIAL-PRESSURE COMPENSATED CONTROL VALVE - The invention relates to an injector for injecting fuel into combustion chambers. According to the invention, a valve piston of a control valve is provided with low pressure on both faces thereof. The valve piston is arranged in a valve chamber hydraulically connected to a control chamber and is guided inside a sleeve received in the valve chamber. The valve chamber contains a spring supported on one end against the sleeve and on the other end on the valve piston such that the spring presses the valve piston onto a valve seat and the sleeve onto an opposing bottom surface. The valve piston diameter inside the sleeve corresponds to the effective valve piston diameter at the valve seat. | 03-25-2010 |
20100095935 | FUEL PRESSURE AMPLIFIER - The present invention relates to systems and methods for pressurization of a fuel line of an engine. In one embodiment, a fuel charging system for an engine is provided. The fuel charging system includes a first fuel pump in fluid communication with a fuel tank to generate a first fluid pressure within a first fuel line. The fuel charging system also includes a second fluid pump having a reciprocating piston including a low pressure end and a high pressure end. The low pressure end is in fluid communication with the first fuel pump through the first fuel line and the high pressure end is in fluid communication with an engine fuel rail through a second fuel line. The reciprocating piston is driven by the first fluid pressure to generate a second fluid pressure within the second fuel line, wherein the second fluid pressure is greater than the first fluid pressure. | 04-22-2010 |
20100101535 | FUEL RAIL VENT SYSTEM - A fuel rail vent system for evacuating air from a fuel rail includes a first fuel reservoir and a first fuel line extending between the first fuel reservoir and the fuel rail. A fuel pump is configured in fluid communication with the first fuel reservoir to pump liquid fuel from the first fuel reservoir to the fuel rail through the first fuel line. A second fuel line separate from the first fuel line extends between the first fuel reservoir and the fuel rail. A primer system is configured for fluid communication with the first fuel reservoir to pump liquid fuel from the first fuel reservoir to the fuel rail through the second fuel line. A second fuel reservoir separate from the first fuel reservoir is configured for fluid communication with the fuel rail downstream of the fuel rail to receive any excess liquid fuel and/or fuel vapor upstream therefrom. | 04-29-2010 |
20100108036 | COMMON RAIL AND METHOD OF MANUFACTURING COMMON RAIL - To provide a common rail that can prevent stress concentration from arising locally with respect to intersecting portions between a flow path and branching paths and can prevent damage such as cracks. | 05-06-2010 |
20100126469 | Apparatus and Method for Controlling Quantity of Fuel Over Common Rail Diesel Engine - An apparatus for controlling the quantity of fuel over a common rail diesel engine includes a wave speed correction map correcting a wave speed and a time corrector, a first adder multiplying the corrected wave speed by an injection time difference, a base correction map using an output of the first adder and a former injection quantity as input variables, an amplitude map using a following injection quantity and a rail pressure as input variables, and a second adder multiplying a base correction map value of the base correction map by an amplitude map value of the amplitude map, and outputting a finally corrected value of the fuel quantity. | 05-27-2010 |
20100132669 | FUEL SUPPLY APPARATUS FOR ENGINE AND INJECTOR FOR THE SAME - A fuel supply apparatus for an engine may include a plurality of common rails that stores fuel under relatively different pressures, and at least an injector that is connected to the common rails to be independently supplied with the fuel and selectively inject the fuel in any one of the connected common rails. | 06-03-2010 |
20100147267 | FUEL INJECTION SYSTEM FOR INTERNAL COMBUSTION ENGINE - To provide a fuel injection system that can efficiently supply high pressure fuel to fuel injectors of an internal combustion engine, whose design and manufacture are made easy by simplifying its mechanical configuration, and which has excellent maintainability during repair and detachment. | 06-17-2010 |
20100147268 | FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A fuel injection system of the common rail type for an internal combustion engine with two rows of cylinders is to be designed such that the deviations in the injection quantities of their injectors from one another are as slight as possible. The fuel injection system has a high-pressure pump, from which fuel flows to a first rail and a second rail which each have respective associated injectors for the two rows of cylinders. The first rail, in a structural unit with a throttle as a hydraulic connection, is preceded by a distributor block. From the distributor block, a connecting line leads to the second rail. The fuel injection system is preferably used in the automobile industry. | 06-17-2010 |
20100154746 | Fuel-injection device - A fuel-injection device includes at least one fuel injector, one receiving bore-hole for the fuel injector, and one pipe-shaped pipe connection of a fuel rail. The fuel injector is pushed into the interior of the pipe connection by an upstream inlet connection. A bayonet closure ensures that the fuel injector is fastened in the pipe connection of the fuel rail in a secure and detachable manner. | 06-24-2010 |
20100154747 | Laminated Piezoelectric Element, Ejection Device, Fuel Ejection System, and Method for Manufacturing Laminated Piezoelectric Element - Provided is a highly durable laminated piezoelectric element wherein a stress generated at a portion, i.e., the boundary between an active region and inactive region, is reduced. A method for manufacturing such laminated piezoelectric element is also provided. The laminated piezoelectric element has a laminated structure ( | 06-24-2010 |
20100175665 | FUEL INJECTOR - The invention relates to a fuel injector, in particular a common rail injector, for injecting fuel into a combustion chamber of an internal combustion engine. The fuel injector has a multi-part injection valve element, which is adjustable between a closing position and an opening position and includes a first part and at least one second part that is adjustable relative to the first part. The first and second parts are coupled to one another via a hydraulic coupler volume. According to the invention, it is provided that the first part is guided in the second part, or the second part is guided in the first part, and that the coupler volume communicates with an injector volume via at least one throttle arrangement. The throttle arrangement is embodied such that the volumetric through flow increases only disproportionately little with an increasing pressure difference between the coupler volume and the injector volume. | 07-15-2010 |
20100192910 | PRESSURE ACCUMULATION FUEL INJECTION DEVICE - When change of fuel pressure sensed with a fuel pressure sensor is small, it is temporarily determined that the fuel pressure sensor is abnormal. After the abnormality is temporarily determined, transfer quantity from a high-pressure fuel supply pump is increased and pressure reduction is performed by driving a pressure reducing valve, thereby increasing the change of the fuel pressure of a common rail. When the change of the fuel pressure sensed with the fuel pressure sensor is small thereafter, it is formally determined that the fuel pressure sensor is abnormal. Thus, a pressure accumulation fuel injection device can appropriately perform abnormality detection of the fuel pressure sensor, irrespective of existence/nonexistence of fuel leak from an injector. | 08-05-2010 |
20100192911 | Injection System, and Method for the Production of an Injection System - An injection system for injecting fuel has an actuator, a pilot valve with a valve mushroom, and a supply throttle. The control chamber encompasses a control piston, a first discharge throttle, a first sealing edge for forming a first sealing seat along with the valve mushroom, a second sealing edge of a piston chamber with a valve piston, the second sealing edge forming a second sealing seat along with the valve piston during a maximum actuator working lift for sealing the piston chamber and the valve chamber from each other; and a second discharge throttle connecting the piston chamber to the low-pressure zone between the first and the second sealing edge, wherein d | 08-05-2010 |
20100199951 | ADAPTIVE CONTROL OF FUEL DELIVERY IN DIRECT INJECTION ENGINES - An adaptive fuel delivery control system includes a pressure monitoring module and a flow rate determination module. The pressure monitoring module determines an actual pressure drop after a fuel injection event on an injector. The flow rate determination module determines an adjusted flow rate based on a reference flow rate and the pressure drop. | 08-12-2010 |
20100206269 | FUEL INJECTOR FLOW CORRECTION SYSTEM FOR DIRECT INJECTION ENGINES - A fuel control system for an engine includes a control module that includes a fuel rail pressure module and a comparison module. The fuel rail pressure module determines a first fuel rail pressure of a fuel rail after a first event and a second fuel rail pressure of the fuel rail after a second event. The first event includes N conditions, a first of the N conditions comprises deactivation of a fuel pump of the engine, and N is an integer. The second event includes M conditions, a first of the M conditions comprises activation of a fuel injector, and M is an integer. The comparison module adjusts a fuel injector constant of the fuel injector based on the first fuel rail pressure, the second fuel rail pressure, and an injector activation period corresponding to the second event. | 08-19-2010 |
20100218742 | Brennstoffeinspritzvorrichtung (Fuel Injection Device) - The fuel-injection device is characterized by an especially low-noise design. The fuel-injection device includes at least one fuel injector and a fuel rail having at least one pipe connection, the fuel injector being introduced into a receiving bore of the pipe connection, and the fuel rail having a discharge opening to supply fuel to the fuel injector. Provided between the fuel injector and the fuel rail is a pressure-wave guide connecting both, in such a way such that dynamic pressure fluctuations in the fuel injector are able to be routed largely past the volume of the receiving bore of the pipe connection. The fuel-injection device is especially suitable for the direct injection of fuel into a combustion chamber of a mixture-compressing internal combustion engine having external ignition, but it is also suitable for the injection of fuel into an intake manifold. | 09-02-2010 |
20100236525 | ENGINE ASSEMBLY INCLUDING CENTRALLY LOCATED FUEL RAIL - An engine assembly may include an engine block, a cylinder head, a fuel injector, and a fuel rail. The engine block may define a cylinder bore. The cylinder head may be coupled to the engine block and may define an intake port, an exhaust port, and a centrally located fuel injector opening between the intake port and the exhaust port. The fuel injector opening may be in direct communication with the cylinder bore. The fuel injector may be located within the fuel injector opening. The fuel rail may overlay the fuel injector opening and may be in communication with a fuel supply and the fuel injector. | 09-23-2010 |
20100236526 | Common rail electronic control injector - The present invention relates to a common rail electronic control injector, which belongs to the electronic control fuel injection system technology. The injector includes an oil inlet joint, an oil inlet located at outside the oil inlet joint, an electromagnet device, a nozzle body, a needle valve, a valve seat and spray holes, wherein the electromagnet device includes a static core, an armature and a coil, wherein a working gap between the static core and the armature is H, the armature is moveably connected with the needle valve along an axial direction. The present invention further includes a compression spring applying a force to the needle valve, a force mechanism applying a force to the armature, and a block mechanism providing an axial anti-thrust while the armature is reset. The present invention has advantages of lower manufacturing cost, better reliability and smaller driving energy. | 09-23-2010 |
20100236527 | Electronic control common rail DME injection system - A common rail electronic control injection system which uses a DME or a low-viscosity fuel similar with DME to inject into a combustion engine, includes a fuel container, a common rail tube, a high-pressure tube, an electronic control injector, an electronic control unit, a high-pressure pump, a working medium case, a reversing component, and a pressure convertor, wherein the pressure convertor includes at least two working components, each working component is divided into a fuel chamber and a working medium chamber by an dividing element, the dividing element can freely deform or move between the fuel chamber and the working medium chamber by pressure effect. The invention avoids the sealing and abrasion problem in the plunger matching portions which is caused by the low-viscosity fuel so as to greatly improve the lifetime and reliability of system. | 09-23-2010 |
20100258084 | FUEL-PUMPING SYSTEM, METHOD FOR OPERATING A FUEL-PUMPING SYSTEM AND FUEL-INJECTION SYSTEM COMPRISING A FUEL-PUMPING SYSTEM - A fuel-pumping system for a fuel includes at least one reservoir providing a first volume for the fuel and a second volume for a compression fluid, a separator membrane between the first volume and the second volume, an inlet port of the at least one reservoir for feeding the fuel to the first volume, an outlet port of the at least one reservoir for discharging the fuel at a high pressure from the first volume, a fluid port of the at least one reservoir for supplying or removing the compression fluid to or from the second volume. An operating method and a fuel-injection system are also disclosed. | 10-14-2010 |
20100269791 | DIAGNOSTIC SYSTEMS AND METHODS FOR A PRESSURE SENSOR DURING IDLE CONDITIONS - A diagnostic system for a pressure sensor includes a fuel pump module and a diagnostic control module. The fuel pump module activates a first pump and deactivates a second pump when an engine is operating in a diagnostic mode. The first pump supplies fuel to the second pump and the second pump supplies fuel to fuel injectors of the engine via a fuel rail. The diagnostic control module receives a measured pressure signal from a pressure sensor that indicates a pressure of the fuel rail during the diagnostic mode. The diagnostic control module detects a fault of the pressure sensor based on a comparison between the measured pressure signal and the commanded pressure signal for the first pump. | 10-28-2010 |
20100275883 | FUEL SYSTEM COMPONENT FOR A DIRECT INJECTION INTERNAL COMBUSTION ENGINE - A fuel system component for a direct injection internal combustion engine. The component includes a fuel rail and a plurality of direct injection fuel injectors which are rigidly attached to the rail. Each fuel injector has an elongated body as well as a harness assembly extending laterally outward from the elongated body. Each injector is attached to the fuel rail such that, when viewed along an axis of the fuel injector body, the fuel rail overlies at least a portion of the injector body and at least a portion of the harness assembly. | 11-04-2010 |
20100282212 | PRESSURE CONTROL IN LOW STATIC LEAK FUEL SYSTEM - A pressure relief valve includes a valve body having a valve seat fluidly positioned between an inlet and an outlet. A valve member is movable among a first position, a second position, and a third position. The valve member is in contact with the valve seat and fluidly blocks the inlet from the outlet at the first position. At the second position of the valve member, the inlet is fluidly connected to the outlet via a small flow area. The inlet is fluidly connected to the outlet via a large flow area when the valve member is at the third position. An electrical actuator is attached to the valve body and is operably coupled to move the valve member when energized. The valve member includes an opening hydraulic surface exposed to fluid pressure in the inlet when at the first position. A spring is operably positioned to bias the valve member toward the second position when the valve member is at the third position. | 11-11-2010 |
20100282213 | DRIVE CONTROL METHOD OF FLOW RATE CONTROL VALVE IN COMMON RAIL TYPE FUEL INJECTION CONTROL APPARATUS AND COMMON RAIL TYPE FUEL INJECTION CONTROL APPARATUS - To facilitate early stabilization of an integral value at the time of start up and improve stability and responsiveness of a rail pressure control. | 11-11-2010 |
20100294240 | INJECTOR FOR INJECTING FUEL INTO COMBUSTION CHAMBERS OF INTERNAL COMBUSTION ENGINES - The invention relates to an injector for injecting fuel into combustion chambers of internal combustion engines. According to the invention, a valve seat of a control valve is designed as a flat seat that has a planar valve seat surface. A circumferential edge located on the face of a sleeve of the control valve rests on the planar valve seat surface when the control valve is closed. | 11-25-2010 |
20100294241 | FUEL INJECTOR THE CONTROL VALVE ELEMENT OF WHICH HAS A SUPPORT REGION - The invention relates to an injector, in particular, a common-rail injector for injection of fuel into a combustion chamber of an internal combustion engine. An injection valve element, adjustable between a closed position and an open position, is controllable by means of a control valve. The control valve has a control valve element, adjustable between a closed position and an open position by means of an actuator, which in the closed position is an at least almost pressure-equalized and has a sealing line which cooperates in a sealing manner with a control valve seat. The sealing line of the control valve element is lifted off the control valve seat in the open position and hence opens fuel flow from a high pressure region to a low pressure region of the injector. According to the invention, the control valve element has a support region extending over the sealing line in a radial direction to the high pressure region. | 11-25-2010 |
20100300406 | FUEL SYSTEM FOR A DIRECT INJECTION INTERNAL COMBUSTION ENGINE - A fuel system for a direct injection internal combustion engine having a fuel rail and at least one annular cup secured to the fuel rail so that fuel from the fuel rail flows into the cup. A direct injection fuel injector has a portion axially insertable into the fuel cup to a connected position. A recessed channel on the fuel injector registers with a slot in the annular cup when in the connected position so that a U-shaped clip insertable into the cup slots and the fuel injector channels secures the fuel injector and cup together against axial movement. | 12-02-2010 |
20110005493 | METHOD OF PRODUCING COMMON RAIL AND COMMON RAIL - The present invention provides a method of producing a common rail having a common rail body and a holder which include chemical components of 0.01-0.3 mass % of C, 0.01-0.5 mass % of Si, 0.01-3.0 mass % of Mn, 0.0003-0.01 mass % of B, 0.001-0.01 mass % of N, over 0.01-0.5 mass % of Al, 0.01-0.05 mass % of Ti, P limited to 0.03 mass % or less, S limited to 0.01 mass % or less, O limited to 0.01 mass % or less, a total content of As, Sn, Sb, Pb, and Zn limited to 0.015 mass % or less, the balance including Fe and inevitable impurities, in which the TLB value is 0.001% or more, the method including: inserting an insert metal; performing liquid phase diffusion bonding; performing laser-peening; and removing a surface layer. | 01-13-2011 |
20110005494 | FUEL INJECTION SYSTEM - A fuel injection system for an internal combustion engine includes an engine management system (EMS), a return line connected to a low-pressure fuel system, a common rail for storing and supplying a relatively high-pressure fuel to an injector, and an automatic isolating valve installed between the common rail and the injector. The injector has a nozzle for injecting fuel into the engine. A valve is operated by the EMS and installed between the common rail and the nozzle. A spill valve is operated by the EMS and connected by its inlet to the outlet of the valve and by its outlet to the return line. A check valve is installed between the nozzle and the return line, the inlet of the check valve being connected to the inlet of the nozzle. | 01-13-2011 |
20110017174 | ENGINE WITH GASEOUS AND/OR LIQUID FUEL INJECTOR - In one example, a system for a vehicle travelling on a surface is described. The system includes an engine with a cylinder. The cylinder includes a fuel injector that is supplied with gaseous fuel and liquid fuel by a fuel delivery system. The fuel injector is mounted in the vehicle such that the fuel injector inlet faces at least partially toward the road surface. The orientation of the fuel injector enables a quick transition from liquid fuel to gaseous fuel because the gaseous fuel can rise to the injectors and be preferentially injected. Further, various approaches are described from transitioning operation between gaseous and liquid fuel injection. | 01-27-2011 |
20110023832 | FUEL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A fuel system for a diesel engine has both a low pressure pump, which extracts fuel from the fuel tank, and a high pressure pump, which is fed by the low pressure pump and supplies fuel to fuel injectors. The fuel injectors supply fuel to the engine cylinders, with a small portion of fuel routed back into the fuel system. According to an embodiment of the present disclosure, the injector return fuel is routed into a low pressure fuel line between the low and high pressure fuel pumps, with return fuel from the fuel rails returned through a fuel cooler to the fuel tank. The low pressure fuel line has a filter disposed therein and the injector return fuel is returned to the low pressure fuel line upstream of the filter. | 02-03-2011 |
20110030655 | INJECTION ABNORMALITY DETECTION METHOD AND COMMON RAIL FUEL INJECTION CONTROL SYSTEM - To reliably detect, without adding new parts, injection abnormality not only when fuel injection is not performed but also including fuel injection in a state where the injection quantity has fallen abnormally low. | 02-10-2011 |
20110041808 | SUPERIMPOSED PRESSURE CONTROL OF THE COMMON RAIL SYSTEM - In a method and a device for the pressure control of a common rail injection system of an internal combustion engine, typically a volume flow control valve regulating mode is carried out. During the performance of the volume flow control valve regulating mode, a pressure control valve regulating mode is activated, if necessary, and temporarily carried out in order to achieve improved pressure control behavior in this way, particularly during dynamic processes. | 02-24-2011 |
20110048379 | FLUID INJECTOR WITH RATE SHAPING CAPABILITY - A common rail single fluid injection system includes fuel injectors with one or two control valve assemblies with the ability to produce ramp, square and split injection rate shapes. This is accomplished by including a check speed control device disposed between a first and second check control chamber within a cavity defined by the injector body. The control valves and check speed control device control the speed of a check by controlling the flow of fuel out of the first and second check control chambers. | 03-03-2011 |
20110056464 | COOLING FEATURE FOR FUEL INJECTOR AND FUEL SYSTEM USING SAME - A thermal load control assembly for a fuel injector includes a rail inlet port, a cooling inlet port and a fuel drain port. A leakage path channels leaked fuel originating from the rail inlet port to the fuel drain port. A cooling path channels fuel originating from the cooling inlet port to the fuel drain port. A fuel system using a thermal load control assembly includes a single fuel tank that supplies fuel to the rail inlet port and the cooling inlet port of a plurality of fuel injectors and collect fuel from the fuel drain port of the plurality of fuel injectors. | 03-10-2011 |
20110061630 | MULTI-CYLINDER DIESEL ENGINE - It is an object of the invention to provide a multi-cylinder diesel engine in which a thermal damage of a common rail, and a rise in fuel temperature can be suppressed. | 03-17-2011 |
20110073074 | ENGINE ASSEMBLY INCLUDING CAM COVER MOUNTED FUEL RAIL - An engine assembly may include a cylinder head, a cam cover and a fuel rail assembly. The cylinder head may define intake and exhaust ports and the cam cover may be fixed to the cylinder head. The fuel rail assembly may include a fuel rail, a bracket assembly and a fuel injector. The bracket assembly may be fixed to the fuel rail and may include a fastener and an isolation member. The fastener may be engaged with the cam cover and may secure the fuel rail thereto. The isolation member may be located between the fuel rail and the cam cover to isolate vibration therebetween. The fuel injector may be in communication with the fuel rail and may extend into a combustion chamber defined by the cylinder head at a location between the intake and exhaust ports. | 03-31-2011 |
20110094476 | PRESSURE RELIEF VALVE - A pressure relief valve is disclosed. The pressure relief valve comprises a body, a valve member, and a resilient member. The body includes a guide bore, a seat surface, an inlet, a first outlet, and a second outlet. The valve member is received within a portion of the body and includes a guide portion received within the guide bore, a valve seat configured to sealingly engage the seat surface, and an internal passage. The resilient member biases the valve seat into engagement with the seat surface. The valve member is moveable between a first position in which the inlet is fluidly blocked from the first outlet and the second outlet, a second position in which inlet is fluidly coupled to the first outlet but not to the second outlet, and a third position in which the inlet is fluidly coupled to the first outlet and the second outlet. | 04-28-2011 |
20110108003 | Fuel injection apparatus - A fuel injection apparatus including a plurality of throttle bodies, a fuel supply pipe to supply fuel to upstream and downstream side injectors; connecting pipes to connect the fuel supply pipe to the upstream side injectors and the downstream side injectors; upstream side branch passages to supply fuel branched from the fuel supply pipe to the respective upstream side injectors; downstream side branch passages to supply fuel branched from the fuel supply pipe to the respective downstream side injectors; a nip angle of the upstream side injectors is larger than a nip angle of the downstream side branch passages against the intake flow direction of the intake passage; and the nip angle of the downstream side branch passages is larger than a nip angle of the downstream side injectors against the intake flow direction of the intake passage. | 05-12-2011 |
20110120418 | IMPROVEMENTS RELATING TO FUEL PUMPS - A pump head suitable for use in a fuel pump for a common rail fuel injection system, comprises a pump head housing defining a plunger bore and a pumping chamber. Fuel is pressurized within the pumping chamber by a plunger reciprocating within the plunger bore. The pump head housing includes an inlet valve arrangement for controlling fuel flow into the pumping chamber. The inlet valve arrangement includes a valve member movable between open and closed positions in response to fuel pressure within a gallery. The gallery communicates with an external chamber defined by a closure means externally mounted to the pump head housing. In use, the gallery communicates with a source of low-pressure fuel via the external chamber. The pump head housing has a projection which locates the closure member on the pump head housing. | 05-26-2011 |
20110126804 | Common rail fuel pump with combined discharge and overpressure relief valves - A high pressure piston fuel pump having a discharge check valve between the pumping chamber and a pressurized fuel reservoir and a pressure relief valve between the fuel reservoir and a passageway in the housing, wherein the discharge check valve and the pressure relief valve are contained within a single fitting assembly affixed at the pump housing. A first end flow passage is in fluid communication with the pumping chamber and provides an inlet to the discharge check valve and an outlet from the pressure relief valve. A second end flow passage is in fluid communication with the fuel reservoir and provides an outlet for the discharge check valve and an inlet for the pressure relief valve. Advantages include the ability to pre-test the outlet check and pressure relief prior to assembly into the pump housing, and improved flexibility of the outlet fitting location. | 06-02-2011 |
20110132328 | PASSIVE AND SEMI-ACTIVE DIESEL AND GASOLINE FUEL MODULE - A vehicle fuel system may employ a fuel pump module with a reservoir within a fuel tank. The system may also employ a fuel injection common rail, a fuel supply line leading from the fuel pump module reservoir to the fuel injection common rail, and a fuel return line leading from the fuel injection common rail through a fuel pump module flange. Additionally, the system may employ a first return fuel check valve to release fuel only into a reservoir jet pump and/or a transfer jet pump, while a second return fuel check valve may release fuel only directly into the fuel pump module reservoir. An electric fuel pump within the reservoir may have a fuel pump check valve and supply fuel only to the reservoir jet pump and/or the transfer jet pump, and not to an engine, when activated by a pressure sensor in the fuel return line. | 06-09-2011 |
20110139122 | LIQUEFIED PETROLEUM GAS ENGINE ASSEMBLY WITH FLOW CONTROL - A liquefied petroleum gas (LPG) fuel assembly may include a fuel rail and a flow control mechanism. The fuel rail may have an inlet in communication with a pressurized LPG fuel source, an injection passageway in communication with the inlet and a fuel injector that provides fuel to a combustion chamber of an engine, and an outlet in communication with the fuel injection passageway. The flow control mechanism may be in communication with the outlet of the fuel rail and a LPG fuel tank and may be operable in first and second modes. The second mode may provide a greater flow restriction than the first mode to control a fuel flow from the outlet of the fuel rail to the fuel tank. | 06-16-2011 |
20110146624 | FUEL DELIVERY INJECTION SYSTEM - A fuel delivery injection system that includes, but is not limited to a fuel tank connected to a high pressure fuel pump. The fuel is pumped from the pump and distributed to direct acting piezoelectric injectors by means of a distribution hydraulic circuit. An electronic control unit controls the pump, the injectors and receives the pressure indications from a control valve associated to said distribution circuit. The distribution circuit includes, but is not limited to a small distribution rail having a volume of about 4-6 cm | 06-23-2011 |
20110174270 | PRESSURE RELIEF VALVE - A pressure relief valve suitable for limiting fluid pressure in a common rail of a fuel injection system comprises a first housing part having a first through-bore with a first segment, a second segment and the valve seat defined therebetween. A second housing part is screw fastened with the first housing part and includes a second through-bore disposed coaxially to the first through-bore. An overall rod-shaped valve member is axially displaceable within the second segment. A spring biases the valve member towards the valve seat. A portion of the valve member opposite of the valve seat includes a shaft having a terminal end formed with a non-round cross-section configured such that a tool inserted through the second through-bore and engaging the non-round cross-section prevents the terminal end, and thus the valve member, from rotating relative to the first housing part when the first and second housing parts are screwed together. | 07-21-2011 |
20110192376 | FUEL SUPPLY SYSTEM FOR HEAVY OIL COMMON-RAIL INJECTION SYSTEMS - In a fuel supply system for heavy oil common-rail injection systems for internal combustion engines, including a tank ( | 08-11-2011 |
20110214642 | Range Of Engines Using Common Rail Fuel System With Pump And Rail Assemblies Having Common Components - A pump and rail assembly includes a plurality of quills that are compressed between quill seats on a pump and an output rail. A rail pressure control valve and a rail pressure sensor are attached to respective ends of the output rail. An inlet throttle valve is attached to a housing of the pump and rail assembly. Depending upon the application, the output rail may supply fuel to a first injection bank that includes a plurality of fuel injectors in a first common rail, and a second fuel injection bank that includes a second common rail and a plurality of fuel injectors. Different engines having different numbers of cylinders may use similar pump and rail assemblies that each include a plurality of quills, a plurality of pumping elements positioned in a pump housing and an output rail. The quills for each of the different engine applications are interchangeable but differ in number. In addition, the pumping elements of each of the different engine applications are also interchangeable but differ in number. | 09-08-2011 |
20110220065 | Common Rail High Pressure Pump - A common rail high pressure pump for diesel engines operated using aircraft fuel, has an eccentric ring ( | 09-15-2011 |
20110226219 | FUEL LUBRICATED PUMP AND COMMON RAIL FUEL SYSTEM USING SAME - A method of operating a fuel system for a compression ignition engine includes supplying biofuel, which may be part of a mixture, to an inlet of a fuel lubricated pump. At least one bearing of the pump is lubricated with the biofuel. The fuel lubricated pump supplies high pressure fuel to a common rail. A plurality of fuel injectors are fluidly connected to the common rail, and each include at least one nozzle orifice for injecting the biofuel into the combustion space of the engine. Nozzle orifice coking is limited at least in part by employing a spinodal bronze alloy in the bearing of the fuel lubricated pump. | 09-22-2011 |
20110239989 | COMMON RAIL, COMMON RAIL HOLDER, AND METHOD OF PRODUCING COMMON RAIL - The present invention provides a common rail formed by bonding a common rail body and a common rail holder which has a pressing surface and a convex bonding surface, by means of a heat pressure bonding process and a liquid phase diffusion bonding process, wherein the height H of the convex bonding surface satisfies 1 μm≦H≦50 μm, and the common rail holder includes a deformation introducing portion in which an area of a cross-section parallel to the pressing surface is smaller than the area of the pressing surface. | 10-06-2011 |
20110239990 | FUEL INJECTION SYSTEM - The invention relates to a fuel injection system of the common rail type having a rail body comprising a central bore and one or more outlet bores in fluid communication with the central bore for communicating with a respective fuel injector. The outer circumference of the rail body is substantially oval in cross-section and is thicker in cross-section in a direction substantially perpendicular to the outlet bore axis as compared to the thickness in cross-section substantially parallel to the outlet bore axis. By increasing the thickness of the rail body in this way, stresses at the intersection of the intersection of the central bore with the outlet holes may be reduced by up to 10% or more, thereby increasing the acceptable cycled running pressure of the system. | 10-06-2011 |
20110253106 | FUEL INJECTION SYSTEM - The present application relates to a fuel injection system of an internal combustion engine having an automatic stop-start system, the fuel injection system comprising a high pressure fuel pump, which via a fuel pump line delivers fuel towards a common fuel rail, to which a fuel return line is connected. It is proposed that the fuel return line comprise a control element system, which firstly discharges a fuel pressure to a fuel tank, when a first predefined pressure limit is reached in the fuel return line, and which secondly prevents a further flow of fuel from the return line into the fuel tank, but allows a flow of fuel from the fuel tank into the fuel return line, so that the return line is designed as a fuel pressure accumulator. | 10-20-2011 |
20110277731 | ENGINE DEVICE - There is provided an engine device structured such that it can improve a workability for processing a common rail system, or attaching and detaching it, in spite that it is possible to reduce a damage of a common rail due to a collision. In the engine device structured such that the common rail is provided in one side of an engine block, and the common rail is arranged so as to come close to an air intake manifold, the common rail is provided in parallel obliquely below the air intake manifold, and the common rail is tilted in such an attitude that a fuel injection pipe connector arranged in an upper surface side of the common rail is directed outward and obliquely upward. | 11-17-2011 |
20110297125 | Reverse Flow Check Valve For Common Rail Fuel System - A common rail fuel system includes a reverse flow check valve fluidly positioned between each of a plurality of common rail fuel injectors and an outlet of a high pressure pump. The reverse flow check valves divide the overall system fluid volume into an upstream common volume and a plurality of separate downstream volumes. The upstream common volume is greater than the sum of the separate downstream volumes. The reverse flow check valve is movable between a first configuration with a large flow area and a second configuration with a small flow area. The reverse flow check valve associated with each of the individual fuel injectors may be housed in a quill that fluidly connects the fuel injectors to the high pressure common rail. | 12-08-2011 |
20110315118 | System and Method for Cooling Fuel Injectors - Various fuel injection systems and fuel injectors are disclosed that provide varying cooling rates for fuel injectors connected in series to fuel supply and drain rail. The local cooling rate for each injector is manipulated to balance the heat flux or heat transfer across the injectors disposed along the rail. The cooling rates may be manipulated by varying sizes of openings or slots in the nozzle case, by varying annular spaces disposed between the nozzle case and the portion of the injector body that houses the actuator and solenoid assembly, and by varying the size of annular spaces disposed between the nozzle case and the cylinder head. Strategic placement of slots in the nozzle case that direct more flow at the portion of the injector body that houses the actuator and solenoid assembly may also be employed. As a result, the operating temperatures of fuel injectors connected in series to a fuel rail can be manipulated and moderated so the downstream injectors are not prone to overheating. | 12-29-2011 |
20110315119 | IN-LINE NOISE FILTERING DEVICE FOR FUEL SYSTEM - A fuel injection system includes a fuel supply rail having a supply opening. A fuel injector is coupled to the fuel supply rail and configured to control the delivery of fuel from the fuel supply rail through the supply opening. A noise filtering device engages an upstream end of the fuel injector. The noise filtering device has a projecting portion extending at least partially into the supply opening along an axis, and the noise filtering device defines a restriction passage for directing fuel from the supply rail into the fuel injector. A face seal is established at a transverse face adjacent the supply opening. | 12-29-2011 |
20110315120 | HIGH-PRESSURE PUMP - The invention relates to a high-pressure pump ( | 12-29-2011 |
20120006297 | COMMON RAIL SYSTEM WITH LEAK CONTAINMENT AND DETECTION - This disclosure provides a fuel system for supplying fuel to an internal combustion engine, an internal combustion engine that includes such a fuel system, a connector for connecting a single-walled high pressure common rail to a double-walled fuel line segment, and a fluid containment system. Each embodiment includes drain plumbing having a leakage drain connector that can be used to provide an interface between a single-walled high pressure common rail and a double-walled high pressure fuel line segment, and also provide part of a low pressure passage fluidly connected with a low pressure passage of the double-walled high pressure fuel line segment. The drain plumbing also can provide an interface with a low pressure fuel drain line fluidly coupled to a leakage detector. | 01-12-2012 |
20120024263 | METHOD FOR ESTIMATING FUEL INJECTING PRESSURE - A method is provided for estimating fuel injecting pressure of an injector belonging to a fuel injection system of an internal combustion engine. The fuel injection system includes, but is not limited to a fuel rail and at least one injector that are fluidly connected with the fuel rail through a connecting conduit. The method includes, but is not limited to modelling the pressure fluctuation within the connecting conduit according to the equation P=B·e | 02-02-2012 |
20120055448 | CO-AXIAL QUILL ASSEMBLY FOR DUAL FUEL COMMON RAIL SYSTEM - A dual fuel common rail system includes first and second common rails fluidly connected to a fuel injector by a co-axial quill assembly. Distillate diesel fuel at a first pressure moves from the first common rail through a first fuel passage defined by a quill, through an inner tube and into the fuel injector. Liquid natural gas a second lower pressure moves from the second common rail through a second fuel passage defined by the quill, through a space between the outer tube and the inner tube, and finally into the fuel injector. The quill is partially positioned in a block. First and second compression load adjusters are threadably attached to the block to adjust a compression load on the inner tube and outer tube to inhibit leakage of fuel from the tubes. | 03-08-2012 |
20120080010 | METHOD AND SYSTEM FOR A COMMON RAIL FUEL SYSTEM - In one embodiment, a common rail fuel system for an engine of a vehicle, such as a locomotive, comprises a higher-pressure fuel sub-system and a lower-pressure fuel sub-system, wherein a pressure limiting valve, is in fluid communication with to the higher-pressure fuel sub-system to relieve excess pressure. In a condition where pressure of the higher-pressure fuel sub-system is below a desired and expected threshold, it is possible that the pressure limiting valve is open. An example method is provided to close the pressure limiting valve and determine if opening of the pressure limiting valve is the cause of the pressure being below the threshold or if a leak is present in the common rail fuel system. In this manner, unnecessary disabling of the engine is avoided and, if a leak is present, the leaking sub-system is identified. | 04-05-2012 |
20120097131 | METHOD FOR THE CLOSED-LOOP CONTROL OF THE RAIL PRESSURE IN A COMMON-RAIL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - Proposed is a method for open-loop and closed-loop control of an internal combustion engine ( | 04-26-2012 |
20120132177 | Fuel Injection System For an Internal Combustion Engine - The invention relates to a high-pressure fuel pump comprising a drive shaft supported by bearings, and fuel flows through the bearings in a forced manner in such a way that the mechanical and thermal load-carrying capacity of the bearings, and thus the entire high-pressure fuel pump, is significantly increased. | 05-31-2012 |
20120167859 | FUEL SYSTEM FOR A MULTI-FUEL ENGINE - Methods and systems are provided for operating an engine fuel system including a low pressure pump and a high pressure pump. During conditions when direct injection is not requested, a fuel rail pressure is maintained by the low pressure pump and fuel is port injected. Further, a stroke amount of the high pressure pump is adjusted to maintain an outlet pressure of the high pressure pump just below the fuel rail pressure. By maintaining fuel flow within the high pressure pump when high pressure pump operation is not required, and without flowing fuel from the high pressure pump outlet into the fuel rail, the high pressure pump may be cooled and lubricated without affecting the fuel rail pressure. | 07-05-2012 |
20120199101 | PRESSURE RECOVERY SYSTEM FOR LOW LEAKAGE CAM ASSISTED COMMON RAIL FUEL SYSTEM, FUEL INJECTOR AND OPERATING METHOD THEREFOR - A fuel system includes a plurality of fuel injectors each defining a nozzle supply passage, a nozzle outlet, a low pressure space, and a drain. The fuel system includes a plurality of mechanically actuated pressure intensifiers each including a tappet and being positioned partially within one of the fuel injectors, and a common rail fluidly connecting with each of the fuel injectors. Each of the fuel injectors further includes an injection pressure control mechanism having an injection pressure control valve. Each injection pressure control valve blocks the corresponding pressure intensifier from the common rail and fluidly connects the pressure intensifier with the low pressure space at a first position, and fluidly connects the pressure intensifier with the common rail and blocks the pressure intensifier from the low pressure space at a second position. Each of the fuel injectors further includes a pressure recovery mechanism having a pressure recovery valve. Each pressure recovery valve blocks the corresponding pressure intensifier from the common rail and fluidly connects the low pressure space and the drain at the first position, and fluidly connects the low pressure space with the common rail and blocks the low pressure space from the drain at the second position. Injecting fuel via operating the fuel system may include operating the fuel system in a low leakage mode where the pressure intensifier displaces fuel at a low pressure, between high pressure injections. | 08-09-2012 |
20120204835 | Dual Fuel Common Rail System And Engine Using Same - A dual fuel system for an engine includes a plurality of fuel injectors that each include an injector body with a tip component defining a plurality of gas nozzle outlets and a plurality of liquid nozzle outlets positioned for direct injection into one of the engine cylinders. Each of the fuel injectors is fluidly connected to a gaseous fuel common rail through a quill and an outer passage defined between an inner tube and an outer tube. Each of the fuel injectors is fluidly connected to a liquid fuel common rail through the quill and an inner passage defined by the inner tube. Each combination of an inner tube and outer tube extend into the engine housing between the quill and one of the fuel injectors. Each of the inner tubes extends through one of the outer tubes and is compressed between a conical seat on the quill and a conical seat on one of the fuel injectors. | 08-16-2012 |
20120210980 | ENCLOSURE FOR HIGH PRESSURE FUEL RAIL - The present disclosure provides an enclosure or containment assembly adapted to seal a high pressure fuel rail, and an engine system including such an enclosure or containment assembly. The assembly includes two portions that can sealingly engage to form an enclosure or compartment that contains the high pressure fuel rail. Fuel line connectors leading into the enclosure to ports of the high pressure fuel rail are in a sealing engagement with the enclosure to seal the high pressure fuel rail from the atmosphere and provide an enclosed low pressure region between the high pressure fuel rail and an inner surface of the enclosure. In this way, leaked fuel can be collected from the high pressure fuel lines and contained. The collected and contained leaked fuel can be channeled to a leak detector, which can trigger an alarm with detection of a leak. | 08-23-2012 |
20120210981 | ENGINE WITH GASEOUS AND/OR LIQUID FUEL INJECTOR - In one example, a system for a vehicle travelling on a surface is described. The system includes an engine with a cylinder. The cylinder includes a fuel injector that is supplied with gaseous fuel and liquid fuel by a fuel delivery system. The fuel injector is mounted in the vehicle such that the fuel injector inlet faces at least partially toward the road surface. The orientation of the fuel injector enables a quick transition from liquid fuel to gaseous fuel because the gaseous fuel can rise to the injectors and be preferentially injected. Further, various approaches are described from transitioning operation between gaseous and liquid fuel injection. | 08-23-2012 |
20120255522 | FUEL RAIL FOR ATTENUATING RADIATED NOISE - A fuel rail includes an elongated tube having an inlet and a plurality of outlets. The elongated tube defines a fuel passageway for directing fuel toward the plurality of outlets. The fuel rail also includes a plurality of baffles positioned within the elongated tube to divide the fuel passageway into a plurality of chambers such that each outlet is positioned in one of the plurality of chambers. The plurality of baffles restricts fluid flow between adjacent chambers. A majority of the plurality of outlets are located essentially at an acoustic node of each corresponding chamber to reduce noise generated by the fuel rail. | 10-11-2012 |
20120291753 | Fuel Injector With Telescoping Armature Overtravel Feature - A common rail fuel injector includes a fuel inlet, a set of nozzle outlets, a drain outlet, a nozzle chamber and a needle control chamber. A needle control valve includes a ceramic control valve member movable between a closed position in contact with a flat valve seat to block the needle control chamber from the drain outlet, and an open position at which the needle control chamber is fluidly connected to the drain outlet. A solenoid actuator is mounted in the injector body and includes an armature movable between an overtravel position and an energized position, but the armature has a stable un-energized position between the overtravel position and the energized position. A needle valve member is positioned in the injector body and includes an opening hydraulic surface exposed to fluid pressure in the nozzle chamber, and a closing hydraulic surface exposed to fluid pressure in the needle control chamber. Armature overtravel is facilitated by a telescoping armature pin that includes a stem affixed to the armature and telescopically received in a pusher in contact with the ceramic control valve member. | 11-22-2012 |
20120312279 | Hot Oil Thermal Battery - A fluid temperature conditioner heats fuel being supplied to a fuel injection system for an engine. During operation of the engine, energy is transferred from engine and stored in a thermal battery which is a part of the fluid temperature conditioner. During cold starting of the engine, the energy is transferred from the thermal battery to the fuel to aid in the starting of the engine. | 12-13-2012 |
20120312280 | Fuel Supply System and High-pressure Pump for Combustion Engine - The invention relates to a fuel supply system ( | 12-13-2012 |
20130000604 | Common Rail Fuel Pump Control System - A fuel pump manifold pressure control system may be effective to provide a compact and more effective fuel pump mechanism for compression ignition engines, such as diesel and some natural gas engines. The fuel pump manifold pressure control system includes a fuel pump manifold, at least one fuel injection accumulator adapted for supplying pressurized fuel to at least one fuel injector, a pressure control valve, a pressure sensor, and a pressure relief valve, all contained within a compact fuel pump housing. The pressure control valve and pressure sensor are each adapted for signal communication with electronic controller, and for fuel communication with the fuel pump manifold. The pressure relief valve is adapted for fuel communication with the fuel pump manifold. Each of the control valve, sensor, and relief valve are fixedly mounted to and internally contained within the housing. | 01-03-2013 |
20130025569 | METHOD FOR SUPPLYING A HIGH-PRESSURE PUMP IN A FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE WITH FUEL AND FUEL INJECTION SYSTEM - The invention relates to a method for supplying a high-pressure pump ( | 01-31-2013 |
20130032124 | FUEL CIRCULATION SYSTEM FOR DIMETHYL-ETHER FUEL VEHICLE - A fuel circulation system for a dimethyl-ether fuel vehicle may include a fuel tank storing a fuel, a fuel supply line connected to the fuel tank, a fuel supply pump disposed in the fuel supply line and supplying the fuel to a fuel injection system under pressure, a common rail maintaining the pressure of the fuel pressurized from the fuel supply pump, the fuel injection system injecting the fuel supplied from the common rail, a fuel return line fluid-communicating with and diverging from the fuel injection system and/or the common rail to collect remaining fuel of the fuel, and a fuel cooling system disposed on the fuel return line such that a return fuel returned from the fuel injection system and/or the common rail passes therethrough, wherein the fuel cooling system may be disposed close to a heater core to exchange a heat of the return fuel. | 02-07-2013 |
20130032125 | FUEL COOLING SYSTEM FOR DIMETHYL-ETHER FUEL VEHICLE - A fuel cooling system for a dimethyl-ether fuel vehicle includes a fuel tank storing dimethyl-ether, a fuel supply line introducing the dimethyl-ether into an engine, a fuel supply pump, pressurizing the dimethyl-ether, and sending the pressurized dimethyl-ether to a fuel injection system, a common rail maintaining a pressure of the pressurized dimethyl-ether from the fuel supply pump, a fuel injection system injecting the pressurized dimethyl-ether supplied from the common rail, a fuel return line communicating with and diverging from the fuel injection system, the common rail and/or a downstream side of the fuel supply pump to collect remaining dimethyl-ether, a fuel cooling device disposed in the fuel return line, and a drain pipe to discharge condensed water generated from an evaporator disposed in an air conditioner, wherein discharged condensed water from the drain pipe is supplied to the fuel cooling device and cools the collected dimethyl-ether. | 02-07-2013 |
20130068198 | FUEL DISTRIBUTOR - A fuel distributor, which is used, in particular, for fuel injection systems of mixture-compressing, internal combustion engines having externally supplied ignition, includes a distributor pipe, a first holder and at least one second holder. The distributor pipe has a longitudinal axis. In this connection, the first holder and the second holder are situated at the distributor pipe so as to be axially set apart from one another with respect to the longitudinal axis. The distributor pipe is designed to allow axial length compensation. It is also possible for at least one holder to be designed to allow axial length compensation. | 03-21-2013 |
20130074803 | APPARATUS AND METHOD FOR THE MAGNETIC TREATMENT OF FUEL ENTERING A FUEL BURNING APPARATUS - A device for creating a magnetic field in a fuel line of a fuel burning apparatus includes a pair of magnets each having a substantially flat north pole and a substantially flat south pole and mounted by a holder on opposite sides of the fuel line with the north pole of one magnet facing the south pole of the other magnet to create a magnetic field between the facing north and south poles, the magnetic field passing through the fuel line. The magnets are mounted so that the north pole and south pole are substantially parallel to one another and to the fuel line. The holder may include magnet brackets mounted on the fuel line by a connector, such as a strap device, extending through the brackets. Spacers can be used on the strap to properly space the magnets so they remain opposite one another. | 03-28-2013 |
20130074804 | FUEL DELIVERY SYSTEM - A fuel delivery system for a direct injection internal combustion engine having two fuel rails and a plurality of fuel injectors attached to and fluidly connected with each fuel rail. A first fuel pump has its output connected with the first fuel rail while a second fuel pump has its output connected with the second fuel rail. A crossover pipe fluidly connects the outlets of both the first and second pumps. Both the first pump and the second pump each have an intake stroke and a pumping stroke. Furthermore, the intake stroke of the first pump coincides with the pumping stroke of the second pump and vice versa. | 03-28-2013 |
20130074805 | FUEL RAIL AND FUEL INJECTION APPARATUS USING THE SAME - A tubular rail body his an inlet for introducing a fuel therein from a fuel supply source. A plurality of tubular protrusion portions project from the rail body in a substantially vertical direction relative to an axial direction of the rail body, and are arranged at a predetermined interval in the axial direction. A tubular extension portion extends from each of the protrusion portions in a substantially vertical direction relative to both an axial direction of the protrusion portions and the axial direction of the rail body. The tubular extension portion is inserted into a bore which extends from an exterior of an internal combustion engine to a combustion chamber. A connecting portion is formed on an end portion of the extension portion opposite to the protrusion portion and is fluidly connected with a fuel injector inserted in the bore. | 03-28-2013 |
20130074806 | FUEL INJECTION RATE SHAPING IN AN INTERNAL COMBUSTION ENGINE - A fuel injection system for an internal combustion engine, comprising at least one fuel electroinjector, and an electronic control unit configured to supply the fuel electroinjector, in a fuel injection phase in an engine cylinder, with at least a first electrical command to cause a first fuel injection to be carried out, and a second electrical command cause a second fuel injection temporally subsequent to the first fuel injection to be carried out, the first and second electrical commands being separated in time by an electrical dwell time such that the second fuel injection starts without any discontinuity in time with respect to the first fuel injection. The electronic control unit is further configured to cause the first and second fuel injections to be carried out in engine operating conditions characterized by reduced fuel ignition delays, wherein fuel combustion is prevalently diffusive and heat released during fuel combustion is sensitive to fuel injection law. | 03-28-2013 |
20130074807 | COUPLING DEVICE - A coupling device is provided for hydraulically and mechanically coupling a fuel injector to a fuel rail of a combustion engine. The coupling device comprises a fuel injector cup hydraulically coupled to the fuel rail and configured to engage a fuel inlet portion of the fuel injector, a plate element coupled to the fuel injector and fixedly coupled to the fuel injector cup to retain the fuel injector in the fuel injector cup in direction of a central longitudinal axis of the fuel injector, wherein the plate element comprises a groove, and a snap ring arranged in the groove and designed to fixedly couple the plate element to the fuel injector. The plate element comprises a main body and a ring element. The ring element comprises the groove and is at least limited rotatable around the central longitudinal axis relative to the main body of the plate element. | 03-28-2013 |
20130092129 | Fuel Injector Assembly - A fuel injector assembly has a fuel injector and a coupling device for hydraulically and mechanically coupling a fuel injector to a fuel rail of a combustion engine. The coupling device includes a fuel injector cup configured to be hydraulically coupled to the fuel rail and to engage a fuel inlet portion of the fuel injector, a plate element fixedly coupled to the fuel injector cup and comprising a groove, and a snap ring arranged in the groove and configured to fixedly couple the plate element to the fuel injector to retain the fuel injector in the fuel injector cup in direction of a central longitudinal axis of the fuel injector and to prevent a movement of the fuel injector relative to the plate element in a first direction of the central longitudinal axis. A circlip arranged axially between the fuel injector and the plate element prevents a movement of the fuel injector relative to the plate element in a second, opposite direction of the central longitudinal axis. | 04-18-2013 |
20130092130 | INJECTION UNIT FOR INJECTION OF A FIRST FUEL AND A SECOND FUEL IN A COMBUSTION SPACE - An injection unit ( | 04-18-2013 |
20130092131 | INLET CONNECTOR - In an inlet connector ( | 04-18-2013 |
20130104852 | FUEL RAIL MOUNTING ARRANGEMENT | 05-02-2013 |
20130112171 | FUEL INJECTION ADAPTERS AND RELATED SYSTEMS AND METHODS - A fuel injection adapter can include a primary cavity into which a primary fuel injector can be received and a secondary cavity into which a secondary fuel injector can be received. A channel can provide fluid communication between the primary and secondary cavity, and the primary cavity can be in fluid communication with an outlet of the fuel injection adapter. | 05-09-2013 |
20130118452 | DME COMMON-RAIL FUEL SUPPLY APPARATUS AND METHOD - A dimethyl ether (DME) common-rail fuel supply apparatus, may include a fuel pump fluid-connected to a fuel tank and a common rail and supplying DME fuel supplied via a fuel supply line from the fuel tank to the common rail, an injector receiving the DME fuel from the common rail and injecting the DME fuel at a predetermined pressure, a detector disposed on a fuel return line fluid-connecting the injector and the fuel tank to collect a fuel returned from the injector to the fuel tank, and a fuel amount control valve returning a portion of a fuel in the fuel pump to the fuel return line connected to the injector according to a value measured by the detector. | 05-16-2013 |
20130133621 | Thrust Lubrication Strategy For Roller Lifters Of A Common Rail Fuel Pump - A common rail fuel pump includes a cam shaft with at least one cam rotatably supported in a pump housing. A plurality of tappet assemblies are each reciprocatingly movable in the pump housing, and include an axle pin mounted in a tappet, and a roller mounted in contact for rotation about the axle pin. Each end of the roller includes a plurality of non-contiguous planar thrust surfaces separated by lubrication grooves. A lubrication pathway for the roller includes in sequence a lubrication passage that opens to a roller bearing surface, movement along the roller bearing surface into the lubrication grooves, and then between the planar thrust surface of the roller and a counterpart thrust face of the tappet responsive to rotation of the roller on the cam shaft. | 05-30-2013 |
20130133622 | FUEL SUPPLY APPARATUS FOR ENGINE - A fuel supply apparatus for an engine, includes a first cylinder group, a second cylinder group, first fuel injection valves, second fuel injection valves, a fuel supply pipe, a branch portion, a first connecting pipe, a second connecting pipe, a first delivery pipe, and a second delivery pipe. The branch portion has an inflow direction along which fuel is to flow from the fuel supply pipe into the branch portion. The branch portion has a first outflow direction along which fuel is to flow from the branch portion into the first connecting pipe. The branch portion has a second outflow direction along which fuel is to flow from the branch portion into the second connecting pipe. All of the inflow direction, the first outflow direction, and the second outflow direction are provided not to lie in a same straight line. | 05-30-2013 |
20130160741 | DUAL FUEL INJECTOR HAVING FUEL LEAK SEALS - A dual fuel common rail fuel injector includes a first and second check needle used to selectively inject two different fuels such as diesel and liquefied natural gas. The fuel injector includes a fuel separator disposed in the interior cavity of the first check needle and is in sealing contact with the nozzle. The fuel separator is configured to prevent commingling of the diesel fuel and the liquefied natural gas. The fuel injector also includes at least one sealing member that is configured to prevent the diesel fuel from leaking from the diesel fuel check cavity into a gaseous fuel orifice. | 06-27-2013 |
20130160742 | DUAL FUEL INJECTOR WITH CROSSOVER VALVE - The present disclosure is directed to a fuel circuit of a fuel injector that includes a first channel, a second channel, and a valve. The first channel is configured to receive a first fuel and define a flow path for the first fuel. The second channel is configured to receive a second fuel and define a flow path for the second fuel. The valve is in fluid communication with the first channel and the second channel. The valve is adapted to direct the second fuel to the first channel when a pressure in the first channel reaches a predetermined level. | 06-27-2013 |
20130160743 | METHOD OF PRODUCING COMMON RAIL AND LOCALLY REINFORCED COMMON RAIL - This invention relates to a method producing a common rail excellent in fatigue strength from an inexpensive steel which uses as the material of the common rail a steel for high-strength liquid phase diffusion bonding having good toughness and fatigue strength, which steel contains, in mass %, C: 0.01 to 0.3%, Si: 0.01 to 0.5%, Mn: 0.01 to 3.0%, Cr: 1.0 to 12.0% and Mo: 0.1 to 2.0%, further contains, in mass %, V: 0.01 to 1.0%, B: 0.0003 to 0.01%, Ti: 0.01 to 0.05% and N: 0.001 to 0.01%, has P content limited to 0.03% or less, S content to 0.01% or less and O content to 0.01% or less, further has total content of grain boundary segregated embrittling elements As, Sn, Sb, Pb and Zn limited to 0.015% or less, and a balance of unavoidable impurities and Fe. | 06-27-2013 |
20130167804 | ON-BOARD WATER ADDITION FOR FUEL SEPARATION SYSTEM - A fuel delivery system for an internal combustion engine including a fuel tank, a membrane dividing the fuel tank into at least a first and second portion, the membrane preferentially diffusing a substance from a mixture, the substance having an increased knock suppression relative to the mixture, and a controller adjusting delivery of condensed water to the tank responsive to an operating condition. | 07-04-2013 |
20130186371 | METHOD FOR INCREASING A FATIGUE STRENGTH OF A HOLLOW BODY, AND ASSOCIATED HOLLOW BODY - A method for increasing a fatigue strength of a hollow body with respect to internal pressure and to such a hollow body itself. For this purpose, the hollow body has a plastic encapsulation which is applied in a sealing layer to a circumferential surface of the hollow body. | 07-25-2013 |
20130192564 | LASER SHOCK PEENING APPLIED TO FUEL SYSTEM PUMP HEAD - A fuel pump for pressurizing fuel and transporting the pressurized fuel to a common rail of an automotive engine is disclosed. The inner surface regions are processed by laser shock peening so that the fuel pump can provide a highly pressurized fuel to the common rail. The fuel pump includes an inlet check valve bore fluidly connected to a dome, the dome is fluidly connected to an outlet check valve bore, and the outlet check valve bore is fluidly connected to an outer check valve seat. A fuel-side surface of the fuel pump has a laser shock peened surface. The laser shock peened surface includes one or more of the fuel-side surface(s) of the inlet check valve bore, the dome, the outlet check valve bore, and/or the outlet check valve seat. | 08-01-2013 |
20130199499 | METHOD AND SYSTEM FOR ENGINE CONTROL - Methods and systems are provided for fuel systems including a gaseous fuel. Fuel rail over-pressure may be addressed by temporarily closing a fuel tank valve of the gaseous fuel and initiating diagnostics routines to determine if a pressure regulator is degraded. If the pressure regulator is degraded, one or more fuel system components may be adjusted to enable fuel rail pressure control. | 08-08-2013 |
20130206109 | METHOD FOR THE OPEN-LOOP CONTROL AND CLOSED-LOOP CONTROL OF AN INTERNAL COMBUSTION ENGINE - A method for closed-loop control and open-loop control of an internal combustion engine having a common rail system is closed. In the proposed method, the rail pressure (pCR) is determined in that an electronic engine control unit specifies the flow rate of a high-pressure pump into the rail via an intake throttle on the low-pressure side. An intake throttle actuation function, by which the intake throttle is temporarily actuated, is set to recur over time in the case of known idle time of the internal combustion engine and an actuated engine control unit. | 08-15-2013 |
20130206110 | Pump And Common Rail Fuel Injection System - A high-pressure pump may include a cylinder, a plunger reciprocally driven by an eccentric to pressurize a pump chamber in the cylinder, a rider mounted on the eccentric to allow relative rotation of the eccentric, the rider presenting a face to the plunger, a tappet supported on the face of the rider for transmitting reciprocal movement from the rider to the plunger, and rotatable bearing elements that support the tappet for relative transverse movement of the face of the rider during operation of the pump. The rotatable bearing elements may be at least partially recessed in a body of the tappet. A common rail fuel injection system for an internal combustion engine comprising a common rail for distributing fuel to a plurality of fuel injectors associated with combustion cylinders of the engine may include such a pump for delivering fuel at high pressure to the common rail. | 08-15-2013 |
20130233278 | MULTI-LAYER PIEZOELECTRIC ELEMENT, AND INJECTION DEVICE AND FUEL INJECTION SYSTEM USING THE SAME - There are provided a multi-layer piezoelectric element which suppresses damage or separation of an external electrode and improves durability, as well as an injection device and a fuel injection system using the multi-layer piezoelectric element. A multi-layer piezoelectric element includes a stacked body including stacked piezoelectric bodies and internal electrodes, a conductor layer disposed coveringly on a side surface of the stacked body so as to be elongated in a stacking direction of the stacked body to electrically connect with ends of the internal electrodes, which are extended to the side surface of the stacked body, and an external electrode disposed on the conductor layer, one end in the stacking direction of the external electrode being a feeding end, a bonded region of the external electrode which is bonded to the conductor layer in an area near the feeding end being covered with a resin. | 09-12-2013 |
20130269657 | Common rail slurry fuel injector system - A fuel injection system is described for injecting slurry fuels into the combustion chamber of a diesel engine, equipped with a fuel common rail, and fitted with a gas to fuel contactor chamber for dissolving supplementary atomizing gas into the continuous phase of the slurry fuel, at high pressure. Each fuel injector comprises a combined double valve for starting and stopping fuel injection, so that slurry fuel containing atomizing gas is only depressurized when injected into the engine combustion chamber, when such depressurization greatly improves fuel atomization and combustion efficiency. In this way small bore, high speed, diesel engines can be efficiently operated on high viscosity, low cost fuels such as tars from tar sands, tars from coal and biomass, and residual petroleum fuels. | 10-17-2013 |
20130276758 | GASEOUS FUEL RAIL SENSOR DIAGNOSTICS - Embodiments for indicating fuel rail temperature sensor degradation are provided. In one embodiment, an engine method comprises delivering gaseous fuel to a cylinder based on feedback from a fuel rail temperature sensor, and during select conditions, indicating fuel rail temperature sensor degradation based on a difference between measured fuel rail temperature and an expected temperature. In this way, measured fuel rail temperature may be correlated with other engine temperatures to detect sensor degradation. | 10-24-2013 |
20130284151 | FUEL INJECTION APPARATUS, A PISTON ENGINE AND METHOD OF OPERATING A PISTON ENGINE - A fuel injection apparatus for a piston engine includes a fuel injector body in which an injector needle is provided, which injector needle is arranged to prevent or allow fuel injection flow from the injection apparatus based on the position of the injector needle. The position is effected by a pressurized control fluid so that by applying the pressurized control fluid the needle may be urged towards its closed position and by reducing the pressurized control fluid the needle may be allowed to move away from its closed position. The injection apparatus includes a flow path for the control fluid, wherein the flow path for the control fluid comprises a restriction section providing a restriction effect to the control fluid flow. The restriction section includes at least one temperature-effected member providing a temperature-dependent restriction effect. | 10-31-2013 |
20130298873 | CLOSURE BOLT FOR AN INJECTOR - A closure bolt for an injector of a modular common-rail fuel injection system includes at least one high-pressure port for high-pressure fuel and a bolt-like portion which is configured to be inserted into an opening of the injector and which has a first, preferably conical, sealing surface for closing the opening in a high-pressure-tight manner. The bolt-like portion has a high-pressure bore which is hydraulically connected to the high-pressure port and which issues into the injector. The closure bolt further includes a throughflow limiter configured to limit the flow rate of fuel delivered into the injector. The bolt-like portion has an insert in which the throughflow limiter is formed and which bears the first sealing surface. | 11-14-2013 |
20130306030 | FUNCTIONAL AIR-SUPPLY MODULE INCORPORATING AN INJECTION SET - A functional module includes: a mounting plate ( | 11-21-2013 |
20130319373 | Dual Fuel Injector And Fuel System - A dual fuel injector in a dual common rail fuel system includes an injector body defining a liquid fuel supply passage to a liquid fuel nozzle outlet, and a gaseous fuel supply passage to a gaseous fuel nozzle outlet. A liquid fuel needle check is movable within the injector body and has an opening hydraulic surface exposed to a fuel pressure of a liquid fuel common rail. A gaseous fuel needle check is positioned side by side with the liquid fuel needle check and has an opening hydraulic surface exposed to the fuel pressure of the liquid fuel common rail. Sensitivity to differences in gaseous fuel rail pressure and liquid fuel rail pressure is reduced by the design. | 12-05-2013 |
20130319374 | Injection Device for a Fluid - An injection device for a fluid, in particular for fuel, with has at least one electric and/or electronic control element, at least one valve, at least one first throttle, and a second throttle. The valve can be switched into at least one first throttle position by activating the first throttle and into at least one second throttle position by activating the second throttle. The valve is directly and/or indirectly coupled with the control element such that, by way of an actuating operation of the control element directly and/or indirectly, the valve can be switched from the first into the second throttle position and/or vice versa. Furthermore, the present invention relates to a common-rail injection system, an internal combustion engine, a motor vehicle, a ship, and a method for injecting a fluid. | 12-05-2013 |
20130319375 | TUBULAR PRESSURE ACCUMULATOR, IN PARTICULAR FOR MIXTURE-COMPRESSING, SPARK-IGNITED INTERNAL COMBUSTION ENGINES - A tubular pressure accumulator which is used, in particular, as a fuel distribution rail for a mixture-compressing, spark-ignited internal combustion engine includes a tubularly bent metal wall. In this way, longitudinal sides, which are assigned to one another, of tubularly bent metal wall are connected to one another through a weld. Furthermore, the tubularly bent metal wall has at least one design feature implemented by the machining of the flat metal wall and the bending of metal wall, which take place prior to the welding. | 12-05-2013 |
20130327296 | Dual Fuel Common Rail Engine With Co-Axial Quill Assembly - A dual fuel common rail engine supplies pressurized natural gas and liquid diesel fuel at different pressures through a co-axial quill assembly for direct injection from a single fuel injector into an engine cylinder. Pressure waves in the gaseous fuel common rail are damped in a pressure damping chamber of the co-axial quill assembly before the pressure wave can undermine consistent gaseous fuel injection rates and quantities from the fuel injector. | 12-12-2013 |
20130327297 | METHOD FOR REFRESHING THE INJECTION LAW OF A FUEL INJECTOR - A method refreshes an injection law of a fuel injector to be tested in an injection system. The method comprises steps of establishing a desired fuel quantity for the fuel injector to be tested, performing at least one first measurement opening of the fuel injector to be tested in a test actuation time, determining a pressure drop in a common rail during the first measurement opening of the fuel injector to be tested, determining a first fuel quantity that is fed during the first measurement opening, calculating a second fuel quantity as a difference between the desired fuel quantity and the first fuel quantity, and performing a second completion opening of the fuel injector to be tested for feeding the second fuel quantity needed to reach the desired fuel quantity. | 12-12-2013 |
20130327298 | FUEL-PUMPING SYSTEM, METHOD FOR OPERATING A FUEL-PUMPING SYSTEM AND FUEL-INJECTION SYSTEM COMPRISING A FUEL-PUMPING SYSTEM - A fuel-pumping system for a fuel includes at least one reservoir providing a first volume for the fuel and a second volume fur a compression fluid, a separator membrane between the first volume and the second volume, an inlet port of the at least one reservoir for feeding the fuel to the first volume, an outlet port of the at least one reservoir for discharging the fuel at a high pressure from the first volume, a fluid port of the at least one reservoir for supplying or removing the compression fluid to or from the second volume. An operating method and a fuel-injection system are also disclosed. | 12-12-2013 |
20130333668 | Method and Apparatus for Generating Useful Work from the Vent Gas of a Dual Fuel Internal Combustion Engine - An engine system is disclosed that combusts both gaseous and diesel fuels. The system includes a diesel reservoir in communication with an internal combustion engine via a diesel rail. The system also includes a liquefied gaseous fuel reservoir in communication with the internal combustion engine via a gaseous fuel rail. The gaseous fuel and diesel rails both are in communication with a pressure control device. The pressure control device measures the pressure differential between the gaseous fuel and diesel rails. If the pressure differential exceeds a desired range, the pressure control device vents gaseous fuel from the gaseous fuel rail to a spark ignited engine, where the vent gas is used as fuel. The spark ignited engine then converts the vented gaseous fuel to useful work. | 12-19-2013 |
20130333669 | FUEL INJECTOR HAVING AN IMPROVED HIGH-PRESSURE CONNECTION - A fuel injection device includes a rail having at least one outflow opening, at least one injector situated on the rail, a connecting piece situated on the injector, and a flange element for fastening the injector on the rail. The flange element includes a central opening through which the connecting piece is guided. A metal-metal sealing is provided between the connecting piece and the rail. The connecting piece is designed in one piece with an undercut, and the flange element engages with the undercut of the connecting piece. The connecting piece presses against the rail in a sealing manner . | 12-19-2013 |
20130340713 | INJECTOR SYSTEM - An injector system which is in particular used as an injector block for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines includes a fuel distribution rail, a counter bracket, a first injector, and at least one second injector. Here, the counter bracket has a first connecting piece and a second connecting piece. The first injector is joined to the counter bracket on an input side of the first connecting piece with the aid of an elastic sealing ring. The second injector is joined to the counter bracket on an input side of the second connecting piece with the aid of an elastic sealing ring. In this case, the counter bracket is connected to the fuel distribution rail. The fuel distribution rail is used for distributing compressed natural gas to the injectors. The injector system has a compact design. | 12-26-2013 |
20130340714 | Coupling Device - The coupling device ( | 12-26-2013 |
20140000563 | Coaxial Quill Assembly Retainer And Common Rail Fuel System Using Same | 01-02-2014 |
20140014068 | DAMPED FUEL DELIVERY SYSTEM - A fuel delivery system including a fuel line and a damper. The fuel line extends to a fuel injector and defines a fuel path. The damper is along the fuel path and includes a flexible member and a stop. A first side of the flexible member faces the fuel path and a second side of the flexible member faces the stop. | 01-16-2014 |
20140020659 | LAMINATED PIEZOELECTRIC ELEMENT, INJECTION APPARATUS PROVIDED WITH SAME, AND FUEL INJECTION SYSTEM PROVIDED WITH SAME - There are provided a multi-layer piezoelectric element that is driven stably for a long period of time without developing cracks in a junction between a metallized layer and a lead member or a stacked body, and an injection device and a fuel injection system provided with the same. A multi-layer piezoelectric element includes a stacked body in which piezoelectric layers and internal electrodes are laminated; a metallized layer disposed on a side surface of the stacked body, the metalized layer being electrically connected to the internal electrodes; and an external electrode member disposed on the metallized layer, with an electrically-conductive adhesive layer interposed therebetween, wherein the electrically-conductive adhesive layer has a plurality of voids configured not to open on a surface thereof which surface is in contact with the metallized layer. | 01-23-2014 |
20140026858 | MULTI-LAYER PIEZOELECTRIC ELEMENT, AND PIEZOELECTRIC ACTUATOR, INJECTION DEVICE, AND FUEL INJECTION SYSTEM PROVIDED WITH SAME - There are provided a multi-layer piezoelectric element which is capable of suppression of occurrence of an imperfect area, suffers from no development of leakage current even with moisture intrusion, has long-term freedom from variations in displacement and can achieve stable driving, as well as to provide a piezoelectric actuator, an injection device, and a fuel injection system provided with the multi-layer piezoelectric element. A multi-layer piezoelectric element includes a stacked body in which piezoelectric layers and internal electrodes acting as positive and negative internal electrodes are laminated; an inorganic coating attached to a side surface of the stacked body where ends of both the positive internal electrodes and the negative internal electrodes are exposed; and metal particles composed predominantly of a metal element contained in the internal electrodes, the metal particles dispersed in the inorganic coating. | 01-30-2014 |
20140034017 | ADJUSTMENT DEVICE OF HIGH-PRESSURE PUMP - In an adjustment device of a high-pressure pump for increasing a pressure of a fuel supplied from a feed pump and pressure-feeding the fuel, the adjustment device includes: an inlet valve changing a communication state between a cylinder provided in the high-pressure pump and a feed pump communication path through which the fuel supplied by the feed pump flows, and adjusting an injection amount of the high-pressure pump; a spring member biasing the inlet valve to a closing side; a closing portion, operated by energization, for allowing the inlet valve to move in a closing direction; and a compression amount adjustment member changing a compression amount of the spring member depending on a feed pressure of the feed pump. | 02-06-2014 |
20140034018 | Drain for Fuel Pump - A fuel pump and method for draining such and for providing a lubrication fluid sump level for startup of the fuel pump are disclosed. The fuel pump may comprise a housing, a first plunger apparatus, and a camshaft rotatably mounted in the housing. The camshaft has a first end and a second end and may define a bore extending from the first end to the second end. The camshaft may include a first interface operatively connected to the first plunger apparatus. | 02-06-2014 |
20140034019 | Fuel Injector With Co-Axial Control Valve Members And Fuel System Using Same - A dual fuel injector utilizes first and second control valves to open and close first and second nozzle outlet sets to inject a first fuel and a second fuel, respectively. The first and second control valves have concentric lines of action. The two fuels may differ in at least one of chemical identity, matter phase and pressure. | 02-06-2014 |
20140034020 | Co-Axial Quill Assembly Retainer And Dual Fuel Common Rail Engine Using Same - A dual fuel common rail engine supplies pressurized natural gas and liquid diesel fuel at different pressures through a co-axial quill assembly for direct injection from a single fuel injector into an engine cylinder. Each coaxial quill assembly includes a matched pair of inner and outer quills that are chosen to have dimensions that allow both quills to sealingly engage each fuel injector at a common conical seat responsive to a clamping force applied along an axis. Matched pairs of inner and outer quills are retained together during pre-installation handling with a retainer that is left between the inner and outer quills after installation in an engine. | 02-06-2014 |
20140034021 | FUEL RAIL ASSEMBLY INCLUDING FUEL SEPARATION MEMBRANE - As one example, a fuel rail assembly for supplying pressurized fuel to a plurality of cylinders of an engine is provided. The fuel rail assembly includes a fuel rail housing defining an internal fuel rail volume having at least a first region and a second region; a fuel separation membrane element disposed within the fuel rail housing that segregates the first region from the second region. The membrane element can be configured to pass a first component of a fuel mixture such as an alcohol through the membrane element from the first region to the second region at a higher rate than a second component of the fuel mixture such as a hydrocarbon. The separated alcohol and hydrocarbon components can be provided to the engine in varying relative amounts based on operating conditions. | 02-06-2014 |
20140034022 | APPARATUS AND METHOD FOR CONTROLLING RAIL PRESSURE OF HIGH-PRESSURE COMMON-RAIL TUBE CAVITY OF HIGH-PRESSURE COMMON-RAIL FUEL SYSTEM OF ENGINE - An apparatus ( | 02-06-2014 |
20140041633 | DUAL FUEL ENGINE AND EVAPORATED NATURAL GAS SYSTEM - A dual fuel compression ignition engine operates by injecting gaseous fuel and liquid diesel fuel from a common fuel injector directly into each engine cylinder. The gaseous fuel is ignited by compression igniting a small pilot injection quantity of the liquid diesel fuel. Evaporated natural gas from a cryogenic tank and/or a fuel conditioning module is dosed into an intake manifold of the engine with an electronically controlled supply valve. The electronically controlled supply valve may open to supply evaporated gas to the intake manifold contingent upon combustion conditions in the engine cylinder demonstrating a low risk of methane slip, and the dosing quantities are limited to reduce risk of ignition of an air/gas mixture in the intake manifold. | 02-13-2014 |
20140041634 | DEVICE AND METHOD FOR CONTROLLING HIGH-PRESSURE COMMON-RAIL SYSTEM OF DIESEL ENGINE - An apparatus ( | 02-13-2014 |
20140048042 | Method of fuel activation and system to deliver it to a diesel engine - A method for activating fuel by saturating the fuel with a gas and delivering the saturated fuel to an internal combustion engine for combustion is provided. Fuel from a fuel tank is delivered to an absorber and gas is directed into the absorber, mixing with the dispersed fuel to form an activated fuel. Activated fuel is directed to a fuel rail by a low pressure pump through a pressure regulating valve and Y-connector. Excess fuel from the engine is directed to a separator through a heat exchanger and then through a pressure regulator and is mixed with fresh activated fuel from the absorber. Released gas is separated in a gas separator. The system runs independently and can be easily turned off and switched to the base fuel supply. If the system loses power, it automatically switches to the base fuel supply system without any interruption of engine operation. | 02-20-2014 |
20140060488 | Method for Determining the Idle Travel of a Piezo-Injector with a Directly Actuated Nozzle Needle - A method is disclosed for determining the idle travel of a piezo-injector which has a piezo-actuator and a nozzle needle which is activated directly by the piezo-actuator. A test pulse is applied to the piezo-actuator, which pulse brings about a continuous increase in the piezo-travel. The time period is measured which passes between the starting of the test pulse and the time when the idle travel is overcome. The idle travel of the piezo-injector is then determined from the measured time period. | 03-06-2014 |
20140069386 | LIMP HOME CAPABLE DUAL FUEL ENGINE AND MACHINE USING SAME - A dual fuel engine powers a machine by burning natural gas and liquid diesel fuel. When operating in a low load mode, some of the engine cylinders are fueled with a high ratio of diesel/gas, and the remaining cylinders are unfueled. When operating in a high load mode, all of the engine cylinders are fueled with a low ratio of diesel/gas. When operating in a limp home mode, the fuel injectors are configured to inject only diesel fuel into all of the plurality of engine cylinders. | 03-13-2014 |
20140069387 | DUAL FUEL INJECTOR AND COMMON RAIL FUEL SYSTEM USING SAME - In one aspect, a common rail fuel system includes a plurality of fuel injectors that each include an injector body defining a first fuel inlet fluidly connected to a first common rail and a second fuel inlet fluidly connected to a second common rail. Liquid fuel injection from a first nozzle outlet set is facilitated by energizing a first electrical actuator to open a direct operated check. Injection of gaseous fuel from a second nozzle outlet set is facilitated by energizing a second electrical actuator to open an admission valve to flood a gaseous nozzle chamber with high pressure gaseous fuel above a valve opening pressure that opens a conventional spring biased check to facilitate gaseous fuel injection out of second nozzle outlet set. | 03-13-2014 |
20140076281 | Low-Pressure Circuit for a Fuel Injection System - A low-pressure circuit for a fuel injection system, such as a common-rail injection system, includes a predelivery pump by means of which fuel can be drawn out of the fuel tank and supplied via a fuel line to a low-pressure region of a high-pressure pump. A metering unit for flow rate regulation is located in the low-pressure region, a zero-delivery line with a zero-delivery throttle branches off downstream of the metering unit, and an overflow line with an overflow valve branches off upstream of the metering unit. There is located in the zero-delivery line a shut-off element, which can be switched between an open position and a closed position, for the selective opening or blocking of the zero-delivery line. | 03-20-2014 |
20140076282 | Injection Rail - An injection rail for automotive systems with engine fuelled by a gas engine, especially dual-fuelled diesel-natural gas systems, comprising a main body including a gas inlet duct, a mixing chamber and a plurality of gas outlet nozzles communicating with the mixing chamber and suitable for being connected to the engine. A plurality of gas interception injectors is associated with the inlet duct. Each injector has an inlet passage communicating with the gas inlet duct and an outlet passage leading into the mixing chamber. | 03-20-2014 |
20140102415 | FUEL SYSTEM AND METHODS - The present application discloses an engine, a fuel system for an engine, and a method of installing the fuel system and converting an engine to operate using a second fuel. In one exemplary embodiment, the fuel system comprises at least one fuel rail for the second fuel, at least one connector attached to the fuel rail and configured to fluidly connect the fuel rail to a second fuel injector, and at least one fuel injector adapter configured to receive a discharge end of the second fuel injector and position the discharge end in fluid communication with at least one of an intake port and a combustion chamber of the engine. The fuel system is configured such that the engine operates using the second fuel without removal or use of the original fuel rails and original fuel injectors. | 04-17-2014 |
20140109875 | ADAPTIVE FUEL DIRECT INJECTION SYSTEM - A direct fuel injection system including a common rail and control unit, a pump, an on/off valve, controlled by the control unit, to regulate the volume of fuel sent to the pump to be fed into the common rail, the control unit including: first determination elements for determining a peak phase duration during which a command must be applied to the valve to obtain a peak current to cause a change of state of the valve; second determination elements for determining a holding ratio according to which a command must be applied to the valve, after its change of state, to maintain a holding current necessary to maintain the state of the valve; application elements for applying the command to the valve first continuously during the peak phase duration and then by pulse width modulation according to the holding ratio; and at least one recurrent and automatic adaptation element. | 04-24-2014 |
20140116387 | PRESSURE RELIEF VALVE FOR COMMON RAIL FUEL SYSTEM - A pressure relief valve for a common rail fuel system includes a hard ceramic spherical valve member that moves into and out of contact with a conical valve seat of a soft metallic valve body. Fretting damage to the valve is inhibited by using the dissimilar materials, and by using a guide pin that is allowed to move on the spherical surface of the ceramic spherical valve member. The valve member may be constructed of silicon nitride. | 05-01-2014 |
20140116388 | FUEL SYSTEM RETROFIT KIT FOR AN ENGINE - A retrofit kit for converting a single-fuel engine having an air box to run on two different fuels is disclosed. The kit may have at least one gaseous fuel injector mountable inside the air box and associated with each cylinder of the engine. The kit may further have a common flow regulator. The kit may also have at least one individual fuel supply line configured to connect the common flow regulator to the at least one gaseous fuel injector. The kit may additionally have a fuel supply and a common fuel supply line configured to connect the common flow regulator to the fuel supply. | 05-01-2014 |
20140123948 | Compression Ignition Dual Fuel Engine And Fuel Injector For Same - A compression ignition dual fuel engine utilizes individual fuel injectors to inject both gaseous and liquid fuels into each engine cylinder. Each of the fuel injectors includes two electrical actuators that control pressure in a respective liquid control chamber and gaseous control chamber to control the opening movement of check valves to facilitate liquid and gaseous fuel injection events, respectfully. The control fluid for liquid injection events is liquid, whereas the control fluid for the gaseous injection event is gaseous. The used liquid fuel drained from each fuel injector is returned for recirculation and subsequent injection, whereas the used gaseous fuel that drains from the fuel injector is supplied to the intake manifold for burning as circumstances permit. | 05-08-2014 |
20140123949 | DELIVERY PIPE, PIPE, AND METHOD OF PRODUCING DELIVERY PIPE - A delivery pipe includes a pipe integrally including at least one cylindrical tube section and at least one flat tube section, and a valve attachment including a hollow cylindrical portion and a connection portion having a planar shape. The flat tube section includes a planar attachment portion having a distribution hole extending through the planar attachment portion in a thickness direction thereof. The hollow cylindrical portion has a closed end closed by the connection portion and is configured to be attached to a fuel injection valve. The connection portion has an introduction hole that extends through the connection portion in a thickness direction thereof and communicates with the distribution hole of the planar attachment portion. The valve attachment is connected to the planar attachment portion at a position adjacent to one of edges of the planar attachment portion. The edges extend along an axial direction of the pipe. | 05-08-2014 |
20140123950 | METHOD FOR CONTROLLING AND REGULATING AN INTERNAL COMBUSTION ENGINE - Proposed is a method for controlling and regulating an internal combustion engine ( | 05-08-2014 |
20140158091 | FUEL RAIL-COOLED ENGINE CONTROL SYSTEM - A method for cooling an ECU and an ECU or ECU module mounted to be cooled by fuel flow through a fuel rail. In a preferred embodiment, the ECU has a decentralized distributed processing configuration, with a main ECU module and at least one remote module. The remote ECU module is packaged in an assembly with an elongate hollow metal fuel rail having injector seats. Fuel injectors are received into and seal against the seats and are supplied with fuel via the fuel rail. A printed circuit board carries electronic ECU components. One or more connector assemblies are connected to printed circuit board for electrically connecting the ECU circuitry and may pass through notches formed in the fuel rail. The electronics are potted and mounted to the fuel rail. A thermally conductive wetting compound may be disposed between the electronic assembly and the fuel rail. | 06-12-2014 |
20140182552 | DUAL FUEL COMMON RAIL SYSTEM AND DIESEL ONLY METHOD OF OPERATING SAME - A dual fuel common rail system may be operated in a regular mode in which a relatively large charge of gaseous fuel is ignited by compression igniting a relatively small injection quantity of liquid diesel fuel. The dual fuel system may be operated in a single fuel limp home mode in which liquid diesel fuel is injected at higher pressures. Over pressurization of the gaseous fuel side of the fuel system due to leaked liquid fuel is avoided by regularly injecting leaked liquid fuel, but not gaseous fuel, from the gaseous nozzle outlet set during the limp home mode of operation. | 07-03-2014 |
20140182553 | COMMON RAIL SYSTEM FOR DME FUEL - A common rail system for a dimethyl ether (DME) fuel in which a medium-pressure fuel system is disposed between a low-pressure fuel system and a high-pressure fuel system to improve the durability and reliability of the common rail system is provided. The low-pressure fuel system stores a DME fuel in a gaseous state. The medium-pressure fuel system maintains a DME fuel supplied from the low-pressure fuel system to a high-pressure fuel system or returned from the high-pressure fuel system to the low-pressure fuel system in a liquid state. The high-pressure fuel system receives the DME fuel maintained in the liquid state from the medium-pressure fuel system and supplies the DME fuel to an injector. | 07-03-2014 |
20140209065 | COMMON-RAIL SYSTEM, INTERNAL COMBUSTION ENGINE AND DEVICE AND METHOD FOR CONTROLLING AND/OR REGULATING AN INTERNAL COMBUSTION ENGINE - Exemplary illustrations are provided of a common rail system for an internal combustion engine, having a rail for fuel and an injector for the purpose of injecting the fuel into a working space of the internal combustion engine, said injector having a fluid connection to said rail via a high-pressure conduit. The high-pressure conduit may have a high-pressure component with an individual reservoir, and the high-pressure conduit and/or the rail may have a pressure measurement device. The pressure measurement device may be coupled to a local logic and storage device of a decentralized, local electronic device which is designed for the purpose of locally analyzing and storing measurement data of the pressure measurement device, e.g., injector data and/or rail data, and the pressure measurement device is connected to the central electronic device via a bus, with the local logic and storage device connected between the same. | 07-31-2014 |
20140216409 | FUEL INJECTION APPARATUS - An individual difference index is obtained based on the slope of variation ratios between a plurality of actual injection quantity and a target injection quantity. The individual difference index is stored as a learning value. An individual difference correction of the fuel injector is conducted based on the individual difference index. By using the individual difference index, a shot-dispersion is removed and individual-difference correction of the fuel injector can be conducted. | 08-07-2014 |
20140216410 | FUEL INJECTION SYSTEM FOR COMPRESSION-IGNITION ENGINE - A fuel injection system for a fuel system of a compression-ignition engine is disclosed. In the current disclosure, the fuel injection system includes a common rail, at least one control valve, and a controller. The common rail may be configured to receive fuel from a fuel pump of the fuel system. The at least one control valve may be in fluid communication with the common rail and at least one fuel nozzle of the fuel system. The at least one control valve may be configured to receive fuel from the common rail. Further, the at least one control valve may be configured to supply fuel to the at least one fuel nozzle. The controller may be configured to control the at least one control valve. | 08-07-2014 |
20140238352 | Fault Diagnostic Strategy For Common Rail Fuel System - An electronic controller for a common rail fuel system detects a fault when a time sum accumulated error exceeds a threshold. The time sum accumulated error is left unchanged when the operating condition is transient, and either adds to or subtracts from the time sum accumulated error responsive to a rail pressure error and the operating condition being steady state. | 08-28-2014 |
20140245995 | DUAL FUEL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A dual fuel system provides first and second fuels to internal an engine. Both fuels are stored in a storage tank, separated by a flexible membrane. A fuel rail receives either or both of the fuel types and distributes the fuels to fuel injectors. Upon shutdown of the engine, the second fuel is evacuated from the fuel rail into an auxiliary tank. The first fuel is subsequently supplied to the fuel rail from the storage tank. Upon a restarting of the engine after a predetermined time subsequent to the shutdown of the engine, the first fuel from the fuel rail is used for combustion. The second fuel from the auxiliary tank is then slowly bled into the engine or intake manifold. As the first fuel from the storage tank continues to supply the fuel rail, and the second fuel begins to supplement the first fuel in the fuel rail. | 09-04-2014 |
20140245996 | MULTI-LAYER PIEZOELECTRIC ELEMENT, AND PIEZOELECTRIC ACTUATOR, INJECTION DEVICE, AND FUEL INJECTION SYSTEM PROVIDED WITH THE SAME - There are provided a multi-layer piezoelectric element in which an increase of oxygen vacancies in an electric-field concentration part of piezoelectric layers is suppressed and a decrease of an amount of displacement is suppressed, as well as to provide a piezoelectric actuator, an injection device and a fuel injection system provided with the multi-layer piezoelectric element. A multi-layer piezoelectric element includes a stacked body composed of piezoelectric layers and internal electrode layers which are stacked on each other, and a resin which evolves OH | 09-04-2014 |
20140251276 | Piezo Injector - A piezo injector includes (a) an actuator chamber in which a piezo actuator is arranged, (b) a control piston bore in which a control piston having a first end side facing the piezo actuator is arranged, wherein a portion of the control piston bore delimited by the first end side forms a first control chamber and an opposing portion of the control piston bore forms a spring chamber, and wherein the control piston is arranged between the first control chamber and the spring chamber, (c) a nozzle needle having a second end side, wherein the nozzle needle guides a nozzle needle sleeve, wherein the nozzle needle sleeve and the second end side delimit a second control chamber, (d) a connecting bore between the first control chamber and second control chamber, and (e) a leakage pin arranged between the piezo actuator and the first end side in a leakage pin bore. | 09-11-2014 |
20140261330 | INTERNAL SECONDARY FUEL RAIL ORIFICE - A fuel rail assembly configured for connection to an internal combustion engine includes a first fuel rail, a second fuel rail, and a crossover hose. The first fuel rail includes an inlet having a first flow restrictor and configured to be coupled to a high-pressure pump. The first fuel rail further includes a second flow restrictor disposed in an interior portion that divides the interior into a first rail volume and a remainder volume. The crossover hose includes a third flow restrictor near the end that is connected to the second fuel rail. A first pulsation control volume is defined between the pump and the inlet. A second pulsation control volume is defined to include the remainder volume and the volume in the crossover hose (i.e., between the first and second flow restrictors). The pulsation control volumes reduce pressure fluctuations produced by the high-pressure pump. | 09-18-2014 |
20140283789 | FUEL RAIL WITH PRESSURE PULSATION DAMPER - A fuel rail assembly includes a hollow fuel rail extending along a fuel rail axis and includes at least one outlet for dispensing fuel from the fuel rail. A fuel rail damper is disposed within the fuel rail and extends along a fuel rail axis from a first fuel rail damper end to a second fuel rail damper end for damping pressure pulsations within the fuel rail. A fuel rail damper support is included for positioning the fuel rail damper within the fuel rail. The fuel rail damper support includes an attachment section for fixing the fuel rail damper support to the fuel rail damper and a biasing section that applies a biasing force to prevent axial movement of the fuel rail damper within the fuel rail. | 09-25-2014 |
20140283790 | COMMON RAIL FUEL INJECTION SYSTEM - A common rail fuel injection system includes injectors having a fuel intake port and being provided for respective cylinders of a multi-cylinder diesel internal combustion engine, a common rail accumulating pressurized fuel, a high-pressure supply pump supplying high-pressure fuel, a fuel supply pipe causing the common rail and the high-pressure supply pump to communicate with each other. The fuel injection pipes communicating with pressure supply ports provided in the common rail and causing the injectors and the pressure supply ports to communicating with each other. The fuel injection pipes cause at least three injectors to communicate with one another in series. The number N | 09-25-2014 |
20140305410 | AUXILIARY PRESSURE RELIEF VALVE IN SINGLE PISTON FUEL PUMP - A fuel pump has a low pressure fuel inlet ( | 10-16-2014 |
20140311453 | Controller for a Common-Rail Injection System - A controller for a common-rail injection system includes a plurality of fuel injectors, a common fuel supply line for the fuel injectors, a high-pressure pump for supplying the common fuel supply line with fuel, and a pressure sensor for determining the pressure in the common fuel supply line. A determination unit evaluates data of the pressure sensor and, from the pressure drop caused by an injection in the common fuel supply line, determines the fuel quantity actually injected during this injection or a value derived therefrom. An adaption unit uses the results of the determination unit in order to adapt the actuation of the fuel injectors. The determination unit carries out at least one test injection, and the actually injected fuel quantity or a value derived therefrom is effected by way of the test injection or injections. | 10-23-2014 |
20140326217 | CONNECTING ELEMENT FOR GDI TUBE STRESS REDUCTION - In a GDI fuel rail mounting system comprising a fuel injection rail, having at least one fuel injector receiving cup with a generally cylindrical shape directly attached to the fuel rail generally perpendicular to and offset from the center of the fuel rail. The fuel rail further comprising at least one generally cylindrical attachment means proximal the fuel injector receiving cup, also attached to the fuel rail offset from the center thereof, the attachment means and the fuel injector receiving cup being disposed generally parallel to each other. A securing strap is attached to the outer curvature of at least one of the injector receiving cup and the attachment means, at least partially wrapping around the outer periphery of the attachment means, thereby inhibiting torsional, lineal, and lateral movement of the injector cup relative to the attachment means and the fuel rail. | 11-06-2014 |
20140345570 | METHOD OF FUEL ACTIVATION AND SYSTEM TO DELIVER IT TO A DIESEL ENGINE - A method for activating a diesel fuel by saturating it with air, CO | 11-27-2014 |
20140352666 | COMMON RAIL INJECTOR HAVING SWIRL SPRAY NOZZLE - The present disclosure relates to a common rail injector having a swirl spray nozzle which has a tip having an orifice at a lower end portion of a housing. An upper portion of the tip is closed by means of a cup-shaped nozzle portion, the nozzle portion has a cylindrical side wall surface, a flat base which terminates an upper portion of the side wall surface, and one or more nozzle holes which allow the hollow portion and the orifice to communicate with each other, and the nozzle holes are formed in a tangential direction of the orifice so as to inject fuel in a swirl manner. | 12-04-2014 |
20140360470 | METHOD FOR DIAGNOSING A DRIFT IN AT LEAST ONE INJECTOR OF A COMMON-RAIL FUEL INJECTION SYSTEM - A method of diagnosis of a drift of at least one injector of an injection system with a common ramp, which includes a pressure regulating control unit and a richness regulating control unit, the pressure and richness regulating control units being driven by an electronic computer according to values of pressure setpoint and of richness setpoint which are recorded in the computer, the method of diagnosis including checking for existence of a drift of the pressure regulating control and checking for existence of a drift of the richness regulating control when the two units operate in closed loop, the drift of the injector being established upon the joint detection of a drift of the pressure regulating control unit and of a drift of the richness regulating control unit. | 12-11-2014 |
20140366844 | INJECTOR SYSTEM, IN PARTICULAR INJECTOR BLOCK FOR FUEL INJECTION SYSTEMS - An injector system used as an injector block for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines includes: a first block element which has a fuel distribution channel, and at least one second block element on which a first connecting piece and at least one second connecting piece are situated. Injectors are positioned within the first and second block elements in such a way that the first injector is assigned to the first connecting piece and the second injector is assigned to the second connecting piece. The fuel distribution channel of the first block element is used for distributing compressed natural gas to the injectors. | 12-18-2014 |
20150007796 | FUEL DISTRIBUTOR BAR - A fuel distributor bar for petrol is closed at the end by a stopper, wherein the stopper is inserted into the fuel distributor bar and is soldered thereto. The stopper and the fuel distributor bar are designed for an operating pressure of 200 to 800 bars. A pipe wall of the fuel distributor bar is provided with a return internally at the end for said purpose. The stopper is in engagement with the return and has a projection that terminates flush with the pipe wall of the fuel distributor bar. | 01-08-2015 |
20150013642 | FUEL SYSTEM AND CORRESPONDING METHOD - A fuel injection system for supplying pressurised fuel to an internal combustion engine is provided. The fuel injection system includes a low-pressure hydraulic circuit, a fuel pump with a pumping element and an outlet valve for supply of pressurised fuel to a common rail, and an injector for delivering fuel for combustion from the common rail to the engine, wherein the fuel injection system further includes an isolating valve connected between the outlet valve of the fuel pump and the common rail, wherein the isolating valve is adapted such that the frequency of its seats making the mechanical contact with each other is lower compared to the frequency of the operation of the outlet valve of the fuel pump. | 01-15-2015 |
20150020778 | FUEL INJECTOR NOZZLE - A fuel injector includes a needle moveable along a central axis to initiate and terminate an injection event, and a nozzle body that receives the needle. The nozzle body includes a needle seat, a nozzle sac, and a passageway between the needle seat and the nozzle sac. The passageway defines a passageway inner surface. The nozzle sac has a curved, non-spherical profile and defines a sac inner surface that extends away from a distal end of the passageway inner surface. | 01-22-2015 |
20150027411 | CONTROL APPARATUS FOR OPERATING A FUEL METERING VALVE - A method and control apparatus are disclosed for operating a fuel-metering valve associated to a fuel pump arranged to supply fuel into a fuel rail, the fuel-metering valve having a valve member and an electric actuator arranged to move that member for regulating a fuel flow-rate. The control apparatus includes an electronic control unit connected to the fuel-metering valve and configured to implement a method of control using a target value, a nominal function corrected value to set an adjustable parameter of a control signal for the fuel-metering valve. | 01-29-2015 |
20150034049 | ROLLED STEEL BAR FOR HOT FORGING, HOT-FORGED SECTION MATERIAL, AND COMMON RAIL AND METHOD FOR PRODUCING THE SAME - A rolled steel bar for hot forging consisting, by mass percent, of C: 0.25-0.50%, Si: 0.40-1.0%, Mn: 1.0-1.6%, S: 0.005-0.035%, Al: 0.005-0.050%, V: 0.10-0.30%, and N: 0.005-0.030%, and the balance of Fe and impurities, i.e., P: 0.035% or less and O: 0.0030% or less, wherein Fn1=C+Si/10+Mn/5+5Cr/22+1.65V−5S/7 is 0.90 to 1.20. The predicted maximum width of nonmetallic inclusions at the time when a cumulative distribution function obtained by extreme value statistical processing by taking the width of nonmetallic inclusion in an R | 02-05-2015 |
20150034050 | MULTI-LAYER PIEZOELECTRIC ELEMENT, AND INJECTION DEVICE AND FUEL INJECTION SYSTEM PROVIDED WITH THE SAME - A multi-layer piezoelectric element includes: a stacked body comprising an active section, and inactive sections disposed at opposite ends in a stacking direction of the active section; an electrically-conductive bonding material disposed on a side surface of the stacked body from the active section to the inactive sections; and an external electrode plate attached, through the electrically-conductive bonding material, to the side surface of the stacked body, a spacing between a side surface of at least one of the inactive sections and the external electrode plate being wider than a spacing between a side surface of the active section and the external electrode plate, and the electrically-conductive bonding material situated between the side surface of at least one of the inactive sections and the external electrode plate being larger in thickness than the electrically-conductive bonding material situated between the side surface of the active section and the external electrode plate. | 02-05-2015 |
20150040867 | FUEL INJECTOR NEEDLE SLEEVE - A fuel injector for a fuel injection system includes a nozzle body defining a nozzle body chamber, a needle movably received within the nozzle body chamber for movement between a seated position and a raised position, and a needle sleeve at least partially surrounding the needle and at least partially defining a control volume. The needle moves from the seated position to the raised position in response to a pressure differential between the control volume and the nozzle body chamber. When the needle is in the seated position clearance exists between the needle sleeve and the needle thereby permitting fuel flow between the control volume and the nozzle body chamber, and when the needle is in the raised position, the needle sleeve deforms to reduce the clearance and restrict fuel flow between the control volume and the nozzle body chamber. | 02-12-2015 |
20150040868 | CHECK VALVE ASSEMBLY - A non-return valve assembly for a high-pressure fuel injection system is disclosed. The valve comprises a valve chamber defined in part by a first body and in part by a second body and defining a valve chamber wall, an inlet passage formed in the first body and opening into the valve chamber at a valve seat defined by the first body, an outlet passage, and a valve ball received within the valve chamber and engageable with the valve seat so as to interrupt fluid flow from the outlet passage to the inlet passage through the valve chamber. The valve chamber wall comprises a plurality of guide portions to guide the valve ball in substantially linear movement within the valve chamber. | 02-12-2015 |
20150047613 | FUEL DISTRIBUTION RAIL - A fuel distribution rail for a fuel injection system of an internal combustion engine has connected base tube sections defining a longitudinal fuel channel with connector devices fixed on the base tube and a force relieving groove provided on the outer surface of the base tube sections spaced from the connector devices which extend over at least a part, preferably at least over a greater part of the outer surface of the base tube. In one form a cylindrical base tube has a circular force relieving groove surrounding the base tube spaced from the connector device. | 02-19-2015 |
20150053181 | Method for Operating a Fuel Injection System with Pressure Reduction, and a Fuel Injection System Comprising a Fuel Injection Valve with a Servo Valve - A method for operating a fuel injection system with pressure reduction, and a fuel injection system that includes a fuel injection valve with a servo valve are provided. The method for operating a fuel injection system includes performing a desired pressure reduction in the pressure accumulator using at least one fuel injection valve of the fuel injection system. This is achieved by opening a servo valve in the fuel injection valve, which is opened, during a pressure reduction phase, just wide enough that the actual closing element remains closed and as a result no fuel injection process takes place. | 02-26-2015 |
20150059702 | Viscous Damper Attachment Structure for Supply Pump of Common Rail Fuel Injection Device - A viscous damper mounting structure for a supply pump of a common-rail fuel injection device that can minimize shape modifications on the engine side and changes in the supply pump shape or the like, enables the installation of a damper device on the drive shaft of a supply pump, and reduces the drive noise of the supply pump. The mounting structure includes a supply pump | 03-05-2015 |
20150068495 | METHODS FOR ADJUSTING FUEL COMPOSITION TO INCREASE LIQUID FUEL HEAT TOLERANCE - A method for adjusting a fuel composition to increase liquid fuel heat tolerance is described that includes directly injecting a first fuel (such as liquid propane) to the engine via a fuel rail when a fuel temperature falls below a threshold; and in response to a fuel temperature greater than a threshold, directly injecting a liquid mixture of the first fuel and a second fuel (such as gasoline) via the fuel rail. For example, gasoline may be added in sufficient amounts to the liquid propane to ensure the mixture remains a liquid during engine operations. In this way, the amount of gasoline introduced into the propane may be based on an extent of the fuel temperature above the threshold which further acts to extend the operating range of the first fuel. | 03-12-2015 |
20150068496 | FUEL SYSTEM AND CORRESPONDING METHOD - A fuel system includes a low pressure fuel system, a high-pressure fuel pump, a common rail, at least one fuel injector, and an engine management system. The engine management system may initiate a recirculating cooling fuel flow through the high-pressure fuel pump for avoiding fuel boiling by either increasing the target pressure of the fuel within the common rail above a threshold level, which triggers opening a high-pressure fuel relief valve, such that fuel supplied by the high-pressure fuel pump is returned to the low pressure fuel system via the high-pressure fuel relief valve, or providing increased internal fuel leakage within the at least one fuel injector, such that fuel supplied by the high-pressure fuel pump is returned to the low pressure fuel system by a return line. | 03-12-2015 |
20150068497 | SYSTEM HAVING A FUEL DISTRIBUTOR AND MULTIPLE FUEL INJECTORS - A system, which in particular is used as a fuel injection system for high-pressure injection in internal combustion engines, includes a fuel distributor and a plurality of fuel injectors. Each of the fuel injectors is situated on a cup of the fuel distributor. At least one of the fuel injectors is fastened to the associated cup by a retaining clip. The retaining clip has at least one clip section which is situated between an inner side of the cup and an outer side of the fuel injector. Furthermore, at least one damping composite element is provided, which is situated between the clip section of the retaining clip and the outer side of the fuel injector. The damping composite element has an elastically deformable damping layer. A decoupling is thus realized, which acts to damp vibrations and consequently to reduce noise. | 03-12-2015 |
20150075495 | SYSTEM HAVING A FUEL DISTRIBUTOR AND A HOLDER - A fuel injection system for high-pressure injection in internal combustion engines includes: a fuel distributor; and at least one holder which is used for fastening the fuel distributor to an add-on structure. The holder includes a holder body which has a first layer, a second layer, and an elastically deformable damping layer. The first layer and the second layer are made from a metallic material. The elastically deformable damping layer is disposed between the first layer and the second layer. The holder body is connected to the fuel distributor by laser welding. The damping layer is made of a visco-elastic material. | 03-19-2015 |
20150096536 | PULSE DAMPER USING COMPOSITE SPRING - Disclosed is a pulse damper using a composite spring device for eliminating pulse waves in a plunger pump for supplying fuel, which includes a spring body, and a body for receiving an O-ring spacer supported by an internal O-ring cap, wherein a low pressure coil spring and a high pressure disc spring are arranged in a line inside the spring body so that the low pressure oil spring primarily works and then stops by making a low pressure spring cover and a low pressure spring pad contact a low pressure spring stopper, and secondarily the high pressure disc spring works and then stops by making a high pressure spring pad mounted on one end of a spring guide shaft connected to a piston contact a high pressure spring stopper. | 04-09-2015 |
20150096537 | INTERNAL COMBUSTION ENGINE - An overhead-camshaft internal combustion engine is disclosed, in which the fuel pumps are arranged to use efficiently the space within a cylinder head assembly of the engine. The cylinder head assembly includes a cylinder head block, and the engine comprises a camshaft rotatable about a camshaft axis and having a plurality of inlet and exhaust cams for actuating associated inlet and exhaust valves of the engine, and at least one fuel pump comprising a unit pump assembly driven directly by a respective pump cam provided on the camshaft. The engine further comprises a plurality of rocker arms driven by the inlet and exhaust cams and arranged to actuate the inlet and exhaust valves. Each rocker arm is pivotable about a rocker arm axis which is substantially parallel to the camshaft axis. The or each pump assembly is mounted between the rocker arm axis and the cylinder head block. | 04-09-2015 |
20150096538 | Fluid Injector - A fluid injector for injecting fuel into a combustion engine includes a valve, a tubular valve body and an orifice disc, wherein the valve comprises valve seat and a movable opening device in order to open and close the valve, wherein the orifice disc is arranged at the valve seat on the opposite side of the opening device and is configured to shape a spray of the fluid dispensed by the fluid injector in an open position of the valve. A compensation element and a fastening element are provided, wherein the compensation element is arranged between the valve seat and the fastening element, wherein the fastening element is configured and arranged to fasten the compensation element to the valve in the valve body in a pre-stressed manner. | 04-09-2015 |
20150122224 | METHOD AND SYSTEM FOR ENGINE CONTROL - Methods and systems are provided for fuel systems including a gaseous fuel. Fuel rail over-pressure may be addressed by temporarily closing a fuel tank valve of the gaseous fuel and initiating diagnostics routines to determine if a pressure regulator is degraded. If the pressure regulator is degraded, one or more fuel system components may be adjusted to enable fuel rail pressure control. | 05-07-2015 |
20150136086 | SYSTEM HAVING A FUEL DISTRIBUTOR AND MULTIPLE FUEL INJECTORS - A system, which is used in particular as a fuel injection system for the high-pressure injection in internal combustion engines, includes a fuel distributor and a plurality of fuel injectors. Each fuel injector is situated on a cup of the fuel distributor. At least one of the fuel injectors is fastened to the associated cup by a holding element, which has a supporting surface. The cup has a contact surface on an underside, by way of which the cup is supported at the supporting surface of the holding element by a damping layer. The holding element is attached to the cup. In addition, the fuel injector has a collar, which is braced on the holding element. Because of the damping layer, vibrations are able to be dampened, and the noise transmissions is able to be reduced. | 05-21-2015 |
20150136087 | FUEL SUPPLYING DEVICE - A fuel supplying device supplying fuel from a fuel tank to combustion device may comprise a fuel pipe configured to communicate the fuel tank with a delivery pipe of the combustion device, and a sensor unit configured to detect a property of the fuel. The fuel pipe may branch into a plurality of branch pipes including a first branch pipe and a second branch pipe at an intermediate position between the fuel tank and the combustion device. The sensor unit may comprise a plurality of sensors including a first sensor and a second sensor. The first sensor may be disposed in the first branch pipe and configured to detect the property of the fuel within the first branch pipe. The second sensor may be disposed in the second branch pipe and configured to detect the property of the fuel within the second branch pipe. | 05-21-2015 |
20150316015 | FUEL DELIVERY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A fuel delivery system for an internal combustion engine having a fuel pump with a high pressure outlet. A fuel rail defining an internal fuel chamber is fluidly connected to the fuel pump outlet. Additionally, at least two fuel injectors are fluidly connected to the fuel rail internal fuel chamber. At least one fluid check valve is fluidly positioned within the fuel rail in between two of the fuel injectors which reduces fuel pressure pulsations. | 11-05-2015 |
20150322908 | FLUID VALVE ASSEMBLY - A fluid valve assembly having a housing with a valve seat which forms a fluid port. A valve is movable along an axis relative to the port between an open and a closed position. This valve includes a protrusion complementary in shape to, but slightly smaller than, the port. The protrusion is at least partially positioned in the port when the valve is in its closed position at which time a clearance space between the port and the protrusion is sufficiently small to prevent fluid flow through the port. A main spring disposed between the housing and the valve resiliently urges the valve towards its closed position. A second spring is also operatively positioned between the valve and the housing which urges the valve away from the valve seat towards its open position and prevents contact between the valve and the valve seat. | 11-12-2015 |
20150330316 | In-Cylinder Dynamic Gas Blending Fuel Injector And Dual Fuel Engine - A dual fuel engine utilizes a compression ignited pilot injection of liquid diesel fuel to ignite a mixture of gaseous fuel and air in each engine cylinder. The gaseous fuel is injected at a relatively low pressure directly into the engine cylinder from a fuel injector. The liquid diesel fuel is injected directly into the engine cylinder from the same fuel injector. In-cylinder dynamic gas blending during the compression stroke can reduce potential hydrocarbon slip that could occur when unburned fuel resides in crevice volumes within the engine cylinder. | 11-19-2015 |
20150345448 | FLOW LIMITER AND FILTER ASSEMBLY FOR A FUEL SYSTEM OF AN ENGINE - A flow limiter and filter assembly for a fuel system of an engine includes a flow limiting valve attached to a filter element. The filter element has a large area inlet and a screen of small area outlets. Each of a plurality of quills for the fuel system includes a flow limiter and filter assembly positioned in a quill passage in contact with a limiter seat of a quill body, and the filter element is out of contact with the quill body. | 12-03-2015 |
20160047299 | IINTERNAL COMBUSTION ENGINE WITH COMMON RAIL PILOT AND MAIN INJECTION - An internal combustion engine including a pilot subchamber, a pilot fuel injector having a tip in communication with the pilot subchamber, an ignition element positioned to ignite fuel within the pilot subchamber, and a main fuel injector spaced apart from the pilot fuel injector. The engine includes a common rail in fluid communication with the main fuel injector and with the pilot fuel injector. The internal combustion engine may be a reciprocating engine. A method of combusting fuel in an internal combustion engine is also provided. | 02-18-2016 |
20160053734 | Valve for Injecting Gas - A valve for injecting fuel in an internal combustion engine includes a housing having an inflow section and an outflow section for the fuel and a drive section situated between the inflow section and the outflow section. A first control element is provided which is assigned to the inflow section and which enables or prevents the supply of the fuel in a manner dependent on a switching position of the first control element. A second control element is provided which is assigned to the outflow section and which enables or prevents the discharge of the fuel in a manner dependent on a switching position of the second control element. An actuating drive is provided which is arranged in the drive section and which is coupled to both control elements such that the control elements can be moved into an open position independently of one another. | 02-25-2016 |
20160069313 | FUEL PUMP FOR A DIRECT INJECTION SYSTEM - Fuel pump for a direct injection system provided with a common rail; the fuel pump has: a pumping chamber defined in a main body; a piston which is mounted in a sliding manner inside the pumping chamber to cyclically vary the volume of the pumping chamber; an intake channel which originates from a wall of the pumping chamber; an intake valve which is coupled to the intake channel; a delivery channel which originates from a wall of the pumping chamber; a delivery valve which is coupled to the delivery channel; and an actuating spring which has a plurality of turns having a pitch between the turns being variable and coupled to the piston so as to push the piston towards a maximum volume or minimum volume position of the pumping chamber. | 03-10-2016 |
20160076504 | PRESSURE RELIEF VALVE SYSTEM - Various methods and systems are provided for a pressure relief valve of a fuel system. In one example, a valve includes a first chamber in fluid communication with a first fuel line, a second chamber in fluid communication with a second fuel line and in fluid communication with a fuel storage tank, a piston separating the first chamber from the second chamber, and a needle coupled to the piston and controlling a flow passage between the second fuel line and the second chamber, where the piston and needle are sized such that a force applied on the piston by the first chamber parallel to an axis of movement of the piston maintains the needle in a closed position when the first fuel line flows fuel at a first pressure and the second fuel line flows fuel at a second pressure, the second pressure greater than the first pressure. | 03-17-2016 |
20160084190 | METHOD AND SYSTEMS FOR DIAGNOSING AN INLET METERING VALVE - Various methods and systems are provided diagnosing a valve. In one example, a system comprises a valve configured to regulate a fuel flow, and a controller configured to determine degradation of the valve based on an initial opening characteristic of the valve. | 03-24-2016 |
20160102641 | FUEL PIPING ARRANGEMENT IN COMMON RAIL TYPE FUEL SUPPLY SYSTEMS - The present invention provides for a fuel piping arrangement in common rail type fuel supply systems, the supply system comprising at least one common rail and at least one respective injector, wherein the common rail is connected with the at least one injector directly, by means of only one joint. | 04-14-2016 |
20160115928 | METHOD OF SUPPRESSING CAVITATION IN A FUEL INJECTOR - A needle type fuel injector has a needle control chamber at a pressure subject to a control valve in a control valve chamber which in an opening phase is lifted from its seat to expose the control valve chamber, connecting passage, and needle control chamber to a low pressure drain and in a closing phase is urged against the seat to isolate the control valve chamber, connecting passage, and needle control chamber from the drain. The potential for cavitation at high fuel injection pressure is reduced by throttling the flow of fuel past the control valve seat when the control valve opens, thereby maintaining sufficient back pressure in the control valve chamber and upstream connecting passages. | 04-28-2016 |
20160123291 | CONTROL DEVICE FOR COMMON RAIL FUEL INJECTION DEVICE - A common rail fuel injection device includes a first and second flow rate regulating valve for regulating a delivery volume of a pressurized fuel feed pump that feeds pressurized fuel to a common rail, a pressure reducing valve for reducing a common rail pressure, and a control device. The control device for the common rail fuel injection device includes a first drive controlling unit that controls a first electromagnetic driving unit for the second flow rate regulating valve and a second electromagnetic driving unit for the pressure reducing valve, and a second drive controlling unit that controls a third electromagnetic driving unit for the first flow rate regulating valve. The first drive controlling unit prohibits a drive instruction from being sent to the second flow rate regulating valve when the first drive controlling unit sends a drive instruction to the pressure reducing valve. | 05-05-2016 |
20160177901 | SPLIT FUEL RAIL ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE | 06-23-2016 |
20160201632 | HIGH PRESSURE VALVE | 07-14-2016 |
20180023501 | METHODS AND SYSTEM FOR A FUEL SYSTEM | 01-25-2018 |