Entries |
Document | Title | Date |
20080290196 | Deformation-Optimized Armature Guide For Solenoid Valves - The invention relates to a fuel injector having a solenoid valve for actuating an armature assembly which is configured in one piece or a plurality of pieces. A closing element is actuated via this in order to relieve the pressure in a control chamber. The armature assembly is guided in an armature guide which is fastened in the injector body by means of a valve-clamping screw. In a fixing region in the injector body, the armature guide has at least one circumferential recess which allows for deformation of the fixing region during fastening by the valve-clamping screw. | 11-27-2008 |
20080296415 | Valve Body, Fluid Injector and Process for Manufacturing a Valve Body - A fluid injector has a housing, an actuator and a valve body. The valve body has a cartridge ( | 12-04-2008 |
20090008482 | Fuel injector - A fuel injector has a valve needle that has a maximum diameter at a flow-off edge, and a valve seat acting together with the valve needle using a sealing seat, the valve seat widening, starting from the sealing seat up to a discharge edge, and the flow-off edge of the valve needle being offset backwards, in relation to the flow direction, with respect to the discharge edge of the valve seat, when the fuel injector is closed. The flow-off edge of the valve needle is offset backwards with respect to the discharge edge of the valve seat in a predetermined range of 2 micrometers to 20 micrometers, in the direction of a longitudinal valve axis. | 01-08-2009 |
20090032623 | Fuel Injector - The fuel injector includes an orifice plate being situated downstream from a valve-seat body having a fixed valve seat, the orifice plate having at least one outlet opening. Provided directly upstream from the outlet openings is an inflow opening having an annular inflow cavity. The valve-seat body covers the inflow cavity in such a way that the downstream outlet openings of the orifice plate are covered. A boundary surface of the valve-seat body lying opposite the orifice plate is designed such that, beginning at an exit opening, the height of the inflow opening decreases continuously in a first section up to the at least one outlet opening, while the height of the inflow opening in a second, radially outer section remains largely constant. The fuel injector is particularly suitable for use in fuel injection systems of the mixture-compressing internal combustion engines having external ignition. | 02-05-2009 |
20090065614 | FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES - A control device ( | 03-12-2009 |
20090078798 | Fluid Injection Valve - A fluid injection valve has an inlet, which is set up to receive fluid from a supply line, and which is connected to a chamber, a fluid outlet, which is connected to the chamber, and which is set up to allow fluid to flow out of the fluid injection valve, and a valve arrangement, having a valve seat and a valve member, the valve member being set up to execute opening and closing movements relative to the valve seat. A linear actuator is set up to move the valve member relative to the valve seat, and a spring arrangement exerts on the valve member a spring force which is dependent on the fluid pressure prevailing in the chamber. | 03-26-2009 |
20090114744 | Device for the Injection of Fuel Into the Combustion Chamber of an Internal Combustion Engine - In a device for the injection of fuel into the combustion chamber of an internal combustion engine, including an injector nozzle and a nozzle needle guided in a longitudinally displaceable manner within the injector nozzle for selectively releasing and blocking the fuel flow to the injection openings, the nozzle needle is at least partially surrounded by a nozzle prechamber, wherein a control element determining a supply cross-section for the fuel flow to the injection openings is arranged in the nozzle prechamber. | 05-07-2009 |
20090140079 | VALVE ASSEMBLY FOR AN INJECTION VALVE AND INJECTION VALVE - A valve assembly ( | 06-04-2009 |
20090159727 | FUEL INJECTOR WITH A PRESSURE-COMPENSATED CONTROL VALVE - In a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine, an injection valve member for opening and closing at least one injection opening is triggered by a control valve embodied as a magnet valve. On the armature of the magnet valve, a sealing face is embodied that for closing the control valve is positionable into a valve seat. The armature of the magnet valve is movable, without armature guidance, between an upper and a lower stroke stop. Because the sealing face, which for closing the control valve is positionable into the valve seat, is embodied on the armature, an additional closing element of the kind provided in the prior art can be dispensed with. | 06-25-2009 |
20090159728 | FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE - A fuel injection valve has a valve guide, a valve member movable in a center opening of the valve guide along an axial direction of the valve guide, and a covering layer disposed on a surface of the valve guide. The valve guide has a valve seat placed on an inner surface thereof and a nozzle hole from which fuel is injected. The valve member is seated on the valve seat to close the nozzle hole and leaves the valve seat to open the nozzle hole. The covering layer is placed around an outlet opening of the nozzle hole. The covering layer is made of boron nitride in a hexagonal crystal system so as to have a hydrophilic property higher than that of the surface of the valve guide. | 06-25-2009 |
20090179088 | FUEL INJECTION APPARATUS - An inflection point sensing arrangement of an electronic drive unit, which drives a fuel injection valve, senses an inflection point in a pressure-changing process of the pressure in the control chamber. A charging and discharging condition changing arrangement of the electronic drive unit changes a charging condition for charging of the electric current to a piezoelectric actuator of the fuel injection valve or a discharging condition for discharging of the electric current from the piezoelectric actuator upon sensing of the inflection point, which is sensed with the inflection point sensing arrangement. | 07-16-2009 |
20090184183 | FUEL INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE - A fuel injection device for an internal combustion engine includes a housing and a valve element arranged within the housing. The valve element interacts with a valve seat lying in the region of a fuel outlet opening. It is proposed that at least one control piston and a nozzle needle of the valve element be coupled to one another via a hydraulic coupler. The hydraulic coupler has a coupling space and a non-return valve connected to the coupling space and which opens away therefrom. | 07-23-2009 |
20090206183 | FUEL INJECTOR - The invention relates to a fuel injector with an injector housing ( | 08-20-2009 |
20090206184 | Fuel injector with real-time feedback control - A fuel injection apparatus with a piston device that includes a channel and a piston in the channel. A position sensor is used to detect the piston movement inside the channel when the fuel injection apparatus is energized and de-energized, and the sensing value is used for controlling fuel injection rate in real-time and diagnosing failures in the apparatus. With an actuator installed, the piston can also be used for independently modulating fuel pressure during fuel injection. Thereby the shape of fuel injection pulses is controlled. The fuel injection apparatus has three injection states, and flexible fuel injection timing and multi-pulse injection are allowed. Furthermore, in all injection states, fuel supply has no direct contact to combustion chamber. As a result, when a malfunction sticks the apparatus open, no fuel is supplied. This feature provides a safety nature to the fuel injection apparatus. | 08-20-2009 |
20090242668 | Fuel Injection Valve and Method for Forming Orifice Thereof - A fuel injection valve comprises a convex portion prominently formed on an outer end surface of a nozzle body, stepped recesses each of which has plural steps formed by press forming on the convex portion, and multi orifices as fuel nozzle holes formed by press forming so that an outlet of each of the orifices is located at a bottom face of each of the stepped recesses. Furthermore, the fuel injection valve has plural sets each of which comprises one of the stepped recesses and the relevant orifice, the orifices incline to each other, and a step on a downstream side in each of the stepped recesses has a larger diameter than a step on an upstream side thereof. | 10-01-2009 |
20090242669 | REGULATING CHECK VALVE AND FUEL INJECTON VALVE HAVING THE SAME - A valve chamber is defined in a valve body of the regulating check valve. A first communicating hole and a second communicating hole communicate the valve chamber with a first flow passage and with a the second flow passage, respectively. A valve element is slidably installed in the valve chamber to seat on or lift away from a valve seat to close or open the first communicating hole. A pressure in the first flow passage urges the valve element away from the valve seat, and a pressure in the second flow passage urges the valve element toward the valve seat. The spring is interposed between the valve element and the valve body to urge the valve element away from the valve seat. | 10-01-2009 |
20090242670 | Injector - A fuel chamber defined by a recess portion of a valve body and a tip section of a valve member of an injector is structured such that a seat diameter Ds of a seat section of the valve member seated on a valve seat section formed on an inner peripheral surface of the valve body, an axial distance A between an inlet portion of an injection hole formed in the recess portion and the tip section of the valve member facing the inlet portion in the fuel chamber and an axial distance B between an inside region of the recess portion located radially inside the inlet portion of the injection hole in the fuel chamber and the tip section facing the inside region satisfy inequalities: 0.048≦A/Ds≦0.18 and B/Ds≦0.18. | 10-01-2009 |
20090277978 | FUEL INJECTION DEVICE - A piston can reciprocate in a piston guide cylinder in an axial direction and has a cavity on a piezo driver side thereof. If the piezo driver is energized, a tip of a projecting section of a pushing member pushes a bottom wall of the piston defining the cavity. If fuel pressure of a pressure control chamber increases via a pressurization chamber and a communication passage due to pressurization by the piston, a needle moves in a valve-opening direction against a first compression coil spring. Since the piston has the cavity, a movable mass of the piston is reduced while securing axial length of a sliding section. Thus, fuel leak from the sliding section between the piston and the piston guide cylinder can be suppressed, and an inertial resistance caused in the piston can be reduced. | 11-12-2009 |
20090294556 | Encapsulating arrangement for an electrical component - The invention provides an encapsulating arrangement for an electrical component comprising first and second insulating layers and an electrically charged conductive layer, preferably in the form of a metal foil, intermediate the first and second insulating layers, and arranged to prevent the passage of ionic species across the encapsulating arrangement. The encapsulating arrangement of the invention has particular application to piezoelectric actuator arrangements for fuel injectors of internal combustion engines. | 12-03-2009 |
20090302136 | INJECTOR - An injector may include an injector valve needle which is coated with a diamond-like carbon (DLC), and a valve seat that is selectively contacted with the injector valve needle and is coated with a modula tungsten carbide carbon (modula WCC). | 12-10-2009 |
20090308956 | FUEL INJECTOR - The invention relates to a fuel injector with an injector housing which has a high-pressure fuel connection which is connected to a central high-pressure fuel source outside the injector housing, and with a pressure chamber within the injector housing. According to the pressure in a coupling chamber, fuel under a high pressure is injected from the pressure chamber into a combustion chamber of an internal combustion engine when a nozzle valve opens. The nozzle valve has a combustion chamber-remote end with a control pressure surface which is acted upon in the coupling chamber by the coupling chamber pressure. In order to create a fuel injector which can be produced inexpensively, the nozzle valve has at least one low-pressure surface which is averted from the combustion chamber and acted upon with low pressure. | 12-17-2009 |
20100019069 | METHOD AND DEVICE FOR THE VOLUME FLOW CONTROL OF AN INJECTION SYSTEM - In a method and a device for the volume flow control of an injection system, a seat valve ( | 01-28-2010 |
20100025500 | Materials for fuel injector components - A fuel injector is disclosed. The fuel injector has an injector body and an injector needle located inside the injector body. At least one of the injector body and injector needle has a portion configured to be exposed to a combustion chamber, the portion including maraging or carburizing steel and having a nitrided outer layer. | 02-04-2010 |
20100025501 | FUEL INJECTOR - A fuel injector has a housing with a central longitudinal axis having a first cavity and may be coupled to a fuel rail having a fluid inlet portion and outlet portion. The fuel injector has a valve needle arranged at least partly within the housing axially movable in the first cavity facing the fluid outlet portion, the valve needle preventing a fluid flow through the fluid outlet portion in a closing position and releasing it through the fluid outlet portion in further positions. The fuel injector has a spring arranged within the first cavity for exerting a spring force on the valve needle along the central longitudinal axis for preventing the fluid flow through the fluid outlet portion. Additionally, the fuel injector has an adjusting element for adjusting an axial position regarding the central longitudinal axis of a spring rest depending on a pressure acting on the adjusting element. | 02-04-2010 |
20100038458 | Fuel injector having an energy attenuator sub-assembly for the valve seat - A fuel injector for dispensing gaseous fuel into an internal combustion engine, including a valve body having an axial bore; a valve seat sub-assembly slidably disposed in the axial bore; a valve needle sub-assembly disposed within the axial bore and selectively matable with the valve seat sub-assembly; an electrical actuator connected to the valve needle sub-assembly for moving the valve needle sub-assembly in alternating axial directions to cause the valve needle to make intermittent contact with and separate from the valve seat sub-assembly to control flow of fuel from the outlet end; and an energy attenuator sub-assembly having a polymeric resilient layer fixedly disposed in the axial bore and in contact with the valve seat sub-assembly to bias the valve seat sub-assembly against the valve needle sub-assembly to dampen closing impact of the valve needle sub-assembly against the valve seat sub-assembly. | 02-18-2010 |
20100072306 | Multilayer Piezoelectric Element, Injection Device and Fuel Injection System Using The Same, and Method of Manufacturing Multilayer Piezoelectric Element - A multilayer piezoelectric element is provided which has excellent durability even if it is continuously driven for a long period of time under high temperature and high humidity. The multilayer piezoelectric element has a laminated body that a plurality of piezoelectric layers are laminated through an internal electrode interposed therebetween, in which the internal electrode, a dummy electrode spaced apart and electrically insulated from the internal electrode, and an insulating part between the dummy electrode and the internal electrode are arranged between two adjacent piezoelectric layers. A porous part having a larger number of voids than the internal electrode is formed at positions opposed in the laminating direction to the internal electrode, the dummy electrode and the insulating part through the piezoelectric layer interposed therebetween, respectively. | 03-25-2010 |
20100078507 | Heated and insulated fuel injector - A fuel injector having a fuel heater and an insulating air jacket. The fuel injector includes a fuel heater disposed on the outside of the injector body. The injector body conducts heat energy from the heater element to the fuel chamber preferably via cooling fins that protrude into the fuel path. The heater and injector body are disposed within a closed air jacket formed with the shell of the injector. As air has low thermal conductivity, this feature directs most of the heat energy radially inward through the wall of the injector body into the fuel. The injector is especially useful in injecting low-volatility fuels into internal combustion engines under low-temperature conditions. | 04-01-2010 |
20100090033 | Multi-Layer Piezoelectric Element, Injection Apparatus Using the Same and Method of Multi-Layer Piezoelectric Element - A multi-layer piezoelectric element having higher durability which experience less decrease in the amount of displacement even when operated continuously over a long period of time under a high pressure and a high voltage is provided. The multi-layer piezoelectric element comprises a plurality of piezoelectric layers and a plurality of internal electrode layers, wherein the piezoelectric layers and the internal electrode layers are stacked alternately one on another, and at least one of the plurality of internal electrode layers contains at least one nitride, titanium nitride or zirconium nitride. | 04-15-2010 |
20100096480 | FUEL INJECTOR WITH FUEL PRESSURE SENSOR - A fuel injector which may be employed in injecting fuel into an internal combustion engine. The fuel injector includes an injector body and a head body formed to be separate from the injector body. The head body has installed therein a fuel pressure sensor working to measure the pressure of fuel in the fuel injector and is joined detachably to the injector body. The fuel injector alternatively includes an injector body and a fuel pressure-sensing unit equipped with a fuel pressure sensor. The fuel pressure-sensing unit is installed detachably on the injector body. This structure provides enhanced productivity of the fuel injector and facilitate the ease of replacement of the fuel pressure sensor. | 04-22-2010 |
20100102146 | FUEL INJECTION VALVE - A fuel injection valve includes a valve main body of a hollow tubular shape, a needle valve provided to the valve main body in a slidable manner, a valve seat opposing the needle valve to form a seat portion and having an injection hole formed downstream of the seat portion, and a guide portion provided upstream of the seat portion to guide the needle valve. An annular passage communicating in a circumferential direction is defined between the inner peripheral surface of the valve main body and the outer peripheral surface of the guide portion and a fuel passage through which to introduce a fuel from the annular passage to the seat portion is defined. An almost cylindrical filter to trap foreign matter heading toward the fuel passage is provided to the annular passage. | 04-29-2010 |
20100108786 | FUEL INJECTOR ASSEMBLY - An oil activated fuel injector includes a clevis having an optimized geometry. The optimized geometry substantially eliminates side loading effects of a plunger during operation, thereby maintaining performance integrity of the fuel injector. The optimized geometry includes a profile larger than a head portion of a plunger in order to allow the plunger to free float. | 05-06-2010 |
20100116912 | FUEL INJECTOR - A fuel injector inhibiting adhesion of deposits and simultaneously improving durability by a simple configuration is provided. | 05-13-2010 |
20100123029 | Modular outward opening piezo direct fuel injector - A module, direct fuel injector ( | 05-20-2010 |
20100176222 | Pressure Actuated Fuel Injector - An engine assembly may include a fuel injector having a housing, an actuation mechanism, and a valve member. The housing may define a high pressure region, a low pressure region, a longitudinal bore, and a valve seat having an aperture extending therethrough. The actuation member may be disposed within the longitudinal bore and may include a first axial end surface. The valve mechanism may include a second axial end surface abutting the first axial end surface. The first and second axial end surfaces define an outer contact perimeter and a chamber within the outer contact perimeter. A radial surface area defined by the chamber formed by the first and second axial end surfaces may be at least 25 percent of a radial surface area defined within the outer contact perimeter. | 07-15-2010 |
20100200677 | FUEL INJECTION VALVE OF ACCUMULATOR INJECTION SYSTEM - Providing a fuel injection valve of the accumulator injection system, whereby the surge pressure caused by the change of the fuel injection rate when the nozzle needle begin to be seated on is reduced or lessened; the deterioration as to the fuel injection performance and the strength of the injection valve components the deterioration which is caused by the surge pressures is prevented. A fuel injection valve of the accumulator injection system, the fuel injection valve including: a nozzle | 08-12-2010 |
20100200678 | FUEL INJECTION VALVE OF ACCUMULATOR INJECTION SYSTEM - Providing a fuel injection valve of the accumulator injection system, whereby the surge pressure caused by the change of the fuel injection rate when the nozzle needle begin to be seated on or be lifted up from the valve seat is reduced or lessened; the deterioration as to the fuel injection performance and the strength of the injection valve components the deterioration which is caused by the surge pressures is prevented. A fuel injection valve of the accumulator injection system, the fuel injection valve comprising: a nozzle in which at least one nozzle is provided; a nozzle needle which is fitted into the inner cylindrical space of the nozzle so that the nozzle needle | 08-12-2010 |
20100200679 | FUEL INJECTION CONTROL DEVICE OF ENGINE (AS AMENDED) - A tubular outer needle | 08-12-2010 |
20100224705 | FUEL INJECTION VALVE - This invention serves to suppress the deterioration of oil tightness of a valve after welding without any change in the direction of fuel injection even with deformation of a convex portion after welding of an injection opening plate to a valve seat, as well as without any variation in the direction of fuel injection due to welding variation. In this invention, in a fuel injection valve which has a valve body for opening and closing a valve seat, and receives an operation signal from a control unit to operate the valve body so that fuel is injected from a plurality of injection holes formed in an injection hole plate welded through a welded portion to a downstream side of the valve seat while passing through a gap between the valve body and the valve seat, said injection hole plate is formed at its central portion with a convex portion which is substantially axisymmetric with respect to a valve seat axis and which has a circular-arc shaped cross section, and said welded portion is also substantially axisymmetric with respect to said valve seat axis. In addition, inlet portions of said injection holes are disposed in an injection hole arrangement surface diametrically outside of said convex portion and diametrically inside of a valve seat opening inner wall which is a minimum inside diameter of said valve seat, and said injection hole arrangement surface is coplanar with a surface having said welded portion. | 09-09-2010 |
20100224706 | FORMATION METHOD OF WATER REPELLENT LAYER AND INJECTOR HAVING WATER REPELLENT LAYER - A formation method for forming a water repellent layer on a surface of a metal substrate forms asperities on a surface of a metal basis material of the metal substrate by irradiating the metal basis material with plasma ions. The formation method forms an alloy from atoms of a metal of the metal basis material and the plasma ions. The formation method forms the asperities with portions of the metal basis material, which are not etched due to the alloy, and portions of the metal basis material, which are not alloyed but are etched. The formation method forms the water repellent layer by forming the asperities. | 09-09-2010 |
20100258656 | MEANS FOR ALIGNING AND PRE-STRESSING COMPONENTS OF A FUEL INJECTOR ASSEMBLY - A fuel injector for an internal combustion engine, the fuel injector being of a type with an open-ended nozzle body adjoining an injector body. The interface between the nozzle body and the injector body is flat, to simplify manufacture, and they are aligned relative to each other using a compression element which is typically a sleeve that extends around them. The compression element also acts to apply a pre-compression to at least one of the bodies to enable the fuel injector to operate at higher fuel pressures than would otherwise be possible. | 10-14-2010 |
20110042490 | Fuel Injection Valve and Method for Coupling Two Components Together - There is provided a coupling process whereby two components can be coupled together at high positional precision regardless of precision of a single component. A softer component | 02-24-2011 |
20110042491 | Fuel Injection Valve - An injector used for an internal combustion engine, wherein force acting on a valve element due to flow of fuel is reduced. The shape of either a valve element front end or a valve seat surface of a fuel injection valve is adapted such that the distance between the valve element front end and the valve seat surface which is formed by a circular conical surface is greater than in the case when the shape from a valve element circular tube surface to a spherical surface which forms a seat is connected by a circular arc. As a result, the cross-sectional area of a flow path is rapidly increased from the valve seat surface, on the outer side of the valve element, and this reduces that portion of the valve element which receives pressure due to a reduction in static pressure, reducing force acting on the valve element. | 02-24-2011 |
20110049272 | FUEL INJECTOR - A fuel injector comprising a valve needle for controlling fuel injection through an injector outlet, a control chamber for receiving fuel and a three-way control valve that controls fuel pressure within the control chamber to control opening and closing movement of the valve needle to control fuel injection through the outlet. The three-way control valve controls communication between (a) a first passage and a second passage and (b) a third passage and the second passage, and includes a first housing provided with a guide bore for a control valve member, whereby movement of the control valve member is guided within the guide bore and a first valve seat, defined by a second housing, with which an end of the control valve member is engageable to control communication between the first and second passages. The first housing is a control valve housing and the second housing is an injector housing, the injector housing being provided with a guide bore for the valve needle or a part carried by the valve needle. The control valve also defines a second valve seat defined by the first housing with which the control valve member is engageable to control communication between the second and third flow passages, and an intermediate housing located between the first and second housings, wherein the second passage is defined within the intermediate housing. | 03-03-2011 |
20110057059 | INJECTOR - An injector includes a housing, a fixed core, a movable core, a valve member, and a resilient member pressing the valve member toward a nozzle hole. An inner peripheral surface of the housing axially guides an outer peripheral surface of the movable core. The inner peripheral surface and the outer peripheral surface define an outer clearance therebetween. The valve member includes a shaft-shaped portion and a stopper portion, which contacts the movable core and has a stopper inclined surface. An outer peripheral surface of the shaft-shaped portion and an inner peripheral surface of an insertion hole of the movable core define an inner clearance therebetween. The stopper inclined surface inclines radially inward of the shaft-shaped portion axially toward the nozzle hole. An axial clearance is formed between the stopper inclined surface and the movable core radially outward of a contact portion between the stopper inclined surface and the movable core. | 03-10-2011 |
20110133002 | INJECTION VALVE MEMBER - The invention relates to an injection valve member for a fuel injector, which injection valve member is of multi-part design and which has different functional regions. To reduce the production costs for a fuel injector having an injection valve member, the injection valve member includes two guide bodies which are fastened to a separate connecting rod. | 06-09-2011 |
20110155826 | FUEL INJECTION VALVE - The invention relates to a fuel injection valve, particularly used as injector for fuel injection units of air compressed, self igniting internal combustion engines. According to the invention, a nozzle body with a valve seat surface and a nozzle needle interacts with the valve seat surface as a sealing seat in order to control a fuel flow to an injection hole located downstream of the sealing seat of the nozzle body. The injection hole is rounded at an inflow region. The injection hole further includes a tapering and a cutting edge at an outer region of the hole. Thus high efficiency atomization of fuel close to the nozzle is possible. | 06-30-2011 |
20110186654 | VALVE SEAT FOR GASEOUS FUEL INJECTOR - A gaseous fuel injector is provided with a fuel inlet, a fuel outlet, and a conduit for communicating fuel from the inlet to the outlet. A valve and valve seat is provided for selectively preventing and permitting fuel to pass from the fuel inlet to the fuel outlet. The valve seat has a plurality of apertures for providing fluid communication therethrough. The valve has a sealing face for selectively engaging and disengaging the valve seat to selectively prevent and permit fuel from passing therethrough. The valve seat includes a raised seating surface for sealing against the sealing face when the valve is engaged with the valve seat. The raised seating surface is defined by at least one wall that continuously surrounds each aperture. Each wall is in continuous fluid communication with the entirety of each wall downstream of the sealing face when the valve is engaged with the valve seat. | 08-04-2011 |
20110192918 | INJECTOR - An injector includes an injection nozzle to inject high-pressure fuel, and a main part connected to the injection nozzle in an axis direction. The injection nozzle has a nozzle body, and a cylindrical member having an inner circumference face to support a nozzle needle slidable in the axis direction. The nozzle body has a cylinder to accommodate the nozzle needle and the cylindrical member. The cylindrical member is liquid-tightly connected to the main part in the axis direction. A sliding clearance is defined between the nozzle needle and the cylindrical member, and an annular fuel passage is defined between the cylinder and the cylindrical member. | 08-11-2011 |
20110198418 | FUEL INJECTION DEVICE - In a fuel injection device, a control body has a pressure control chamber, an inflow port and an outflow port. The inflow port and the outflow port are opened at an abutting surface exposed to the pressure control chamber. In the pressure control chamber is arranged a floating plate for pressing the abutting surface by a pressing surface with the pressure of the fuel to interrupt communication between the inflow port and the pressure control chamber. The abutting surface of the control body is provided with an outer opposite surface portion opposite to an outer edge of the pressing surface in a displacement axis direction of the floating plate, and the outer opposite surface portion has a special depressed portion that is depressed in the displacement axis direction and that extends along the shape of the outer edge of the pressing surface. | 08-18-2011 |
20110233311 | VALVE SEAT AND SHROUD FOR GASEOUS FUEL INJECTOR - A fuel injector is provided with a fuel inlet, a fuel outlet, and a fuel passage for communicating fuel from the inlet to the outlet. A valve and valve seat assembly is provided for selectively preventing and permitting fuel to pass from the fuel inlet to the fuel outlet. The valve seat is defined by a tubular body and a valve seat that traverses an inside wall surface of the tubular body. An upstream face of the valve seat is downstream of an upstream end of the tubular body and a downstream face of the valve seat is upstream of a downstream end of the tubular body. At least one passage is provided through the tubular body beginning downstream of the downstream face of the valve seat and upstream of the downstream end of the tubular body. A cover may be disposed at the downstream end of the tubular body. | 09-29-2011 |
20110272499 | HYDRAULICALLY AMPLIFIED MECHANICAL COUPLING - A component includes a transmission arrangement for transmitting a force between an actuator and a control valve. The transmission arrangement includes a post that is associated with the actuator. The control valve is displaceable to an open position from a closed position when an opening force is applied to the control valve that is greater than a closing force provided to the control valve. The transmission arrangement is disposed in the component between the post and the control valve actuator and arranged to mechanically transmit by physical contact an actuator force from the post to the control valve when the post begins to travel towards the extended stroke position, and hydraulically amplify the actuator stroke between the post and the control valve when the post travels from the retracted stroke position to the extended stroke position. | 11-10-2011 |
20120000996 | FUEL INJECTION VALVE AND INTERNAL COMBUSTION ENGINE - A fuel injection valve includes: a nozzle body provided with an injection hole at a tip portion; a needle that is located slidably in the nozzle body and includes a seat portion seated on a seat position in the nozzle body; and an air bubble generation means generating air bubbles in a fuel flowing through the nozzle body, and when a curvature radius is R, a length of a curve is L and a constant is a, an inner peripheral shape of the injection hole includes a curving part passing through a region surrounded by a clothoid curve which is expressed by R×L=a | 01-05-2012 |
20120018542 | HYDRAULIC STROKE TRANSMITTER - A stroke translator or an injector having a solid-state actuator for generating a stroke and a hydraulic system for the hydraulic transmission of the stroke of the solid-state actuator to a control element such as a jet needle of a valve. The hydraulic system has hydraulic volumes hermetically sealed to the outside by metal bellows and constitute a hydraulic bearing with compensation for play. The advantages over known hydraulic levers are such that a complete metal seal is provided, and that a lower-wear design can be realized. Furthermore, a modular structure can be produced. | 01-26-2012 |
20120037730 | Variable Flow Screen Nozzle - A variable flow control nozzle has a head, a tube, and a valve. The head disposes adjacent an opening and has a screen for passage of fluid flow into and out of the head's interior. The tube extends from the head through the opening and secures the head thereto. A tube passage communicates the interior of the head with the other side of the opening. The valve disposed in the passage has a first condition permitting first fluid flow from the passage to the interior of the head and has a second condition permitting second fluid flow from the interior to the passage. The second fluid flow may be greater than the first fluid flow. The tube can have first and second tube members with different internal diameters, and the valve can use a ball movable between positions in the tube members. | 02-16-2012 |
20120056019 | INJECTION DEVICE HAVING INJECTION VOLUME ADJUSTMENT - An injection device ( | 03-08-2012 |
20120138711 | LPI INJECTOR - An LPI injector includes an injector body that is supplied with fuel from the upper portion and injects the fuel down, an icing tube of which the upper end is coupled to the lower portion of the injector body and that injects the fuel inside the injector body through a fuel injection channel therein, a valve seat disposed between the injector body and the icing tube and fitted in the lower portion of the injector body, having an injection hole to inject the fuel and a tube-fastening groove fitted on the icing tube around the injection hole, and a ball valve that is seated at the injector body of the valve seat and opens/closes the injection hole. | 06-07-2012 |
20120138712 | INJECTOR FOR VEHICLE - An injector for a vehicle includes an acceleration passage and at least two expansion passages formed in a nozzle hole such that the acceleration passage increases flow of fuel and the expansion passage increases mixing rate of the fuel and air by generating bubbles in the fuel. The injector for a vehicle may include a housing of cylindrical shape, a plurality of nozzle holes communicating an inside of the housing with an outside thereof at a lower end portion of the housing, and a needle adapted to move reciprocally in the housing, and selectively opening or closing the nozzle hole, wherein each nozzle hole is provided with an acceleration passage and at least two expansion passages, and diameters of the acceleration passage and at least two expansion passages are linearly increases, decreased, or maintained, respectively. | 06-07-2012 |
20120205469 | Dual Mode Fuel Injector - A fuel injector for an internal combustion engine comprises a fuel intensification section and a needle control section. The fuel intensification section has an inlet and an outlet. The fuel intensification section receives fuel at a first pressure at the inlet and provides fuel at one of the first and second pressures at the outlet. The second pressure is greater than the first pressure. The needle control section has an injector needle and an injector needle control valve. The injector needle has a first position and a second position. The injector needle is disposed in the second position to allow fuel to flow from the fuel injector to the internal combustion engine. The injector needle control valve controls movement of the injector needle. All of the fuel that flows from the fuel injector to the internal combustion engine passes through the fuel outlet of the fuel intensification section. | 08-16-2012 |
20120223164 | NOZZLE ASSEMBLY FOR AN INJECTION VALVE AND INJECTION VALVE - A nozzle assembly for an injection valve includes having a nozzle body recess and at least one injection opening, the nozzle body recess being hydraulically coupled to a high-pressure circuit of a fluid, and the injection opening being hydraulically coupled to the nozzle body recess. The nozzle assembly further includes at least one nozzle needle axially movable in the nozzle body recess, and having a central axis and a needle tip that interacts with a wall of the nozzle body recess such that in a closed position, the nozzle needle prevents a fluid flow through the injection opening(s), and in an open position, permits the fluid flow through the injection opening(s). Turbulence elements including recesses and/or protrusions formed as microstructures are arranged on the needle tip and/or walls of the nozzle body recess. The turbulence elements generate a predefined intensity of turbulence of the fluid in the injection opening(s). | 09-06-2012 |
20120248228 | Fuel Injection Valve and Method for Coupling Two Components Together - There is provided a coupling process whereby two components can be coupled together at high positional precision regardless of precision of a single component. A softer component | 10-04-2012 |
20120318893 | NEEDLE FOR NEEDLE VALVE - A needle for use in a needle valve, such as the needle valve of a fuel injector, comprises a tip section ( | 12-20-2012 |
20130008983 | INJECTION NOZZLE - An injection nozzle comprising a nozzle body provided with a bore within which a valve needle is moveable, the valve needle being engageable with a valve seating to control fuel delivery through a set of nozzle outlets, said nozzle outlets including respective entry openings defined in a wall of a sac volume of the nozzle body, wherein the valve needle includes a first valve region, a second valve region and a seat region defined by a transition between the first and second valve regions which seats against the valve seating when the nozzle is in a non-injecting state. The valve needle comprises a third valve region adjacent the second valve region, the third valve region having an outer surface defining a curved profile, the end of the outer surface terminating substantially in alignment with the entry openings when the valve needle is engaged with the valve seating. | 01-10-2013 |
20130015274 | INJECTION SYSTEM OF A FUEL INJECTION PUMPAANM Kang; Sang LipAACI Seocho-guAACO KRAAGP Kang; Sang Lip Seocho-gu KRAANM Kim; Ju TaeAACI Dong-guAACO KRAAGP Kim; Ju Tae Dong-gu KRAANM An; Kwang HeanAACI Dong-guAACO KRAAGP An; Kwang Hean Dong-gu KRAANM Kim; Dong HunAACI Dong-guAACO KRAAGP Kim; Dong Hun Dong-gu KRAANM Yoon; Wook HyeonAACI Dong-guAACO KRAAGP Yoon; Wook Hyeon Dong-gu KRAANM Lee; Yong SeokAACI Dong-guAACO KRAAGP Lee; Yong Seok Dong-gu KRAANM Park; Hyun ChunAACI Dong-guAACO KRAAGP Park; Hyun Chun Dong-gu KR - The injection system of a fuel injection pump is provided. In the injection system of a fuel injection pump, a plunger performs a reciprocating slide motion in the axial direction inside of the plunger chamber of a barrel for compressing fuel. The plunger has a release groove and a control edge. A spill port is formed in the wall surface of the barrel. A damping groove is formed in the upper-part outer circumference of the control edge and provides a fine fuel flow path. The damping groove meets the spill port in advance to form the fine flow of fuel from the plunger chamber to the spill port before the control edge of the plunger meets the spill port to release pressure. | 01-17-2013 |
20130037631 | Injection device having reduced pressure oscillations - An injection device for injecting fuel, including a fuel supply path, through which fuel is able to be supplied, an injector having a spray orifice, from which the supplied fuel is ejected, a valve element, which is movable using an actuator, for opening the spray orifice and for closing it, and a throttle, which is situated in the fuel supply path, a distance of the throttle from the spray orifice along the fuel path having a length which is equivalent to the wavelength of a characteristic frequency of the injection device. | 02-14-2013 |
20130037632 | Fuel Injection Control Device of Engine - A tubular outer needle, slidably housed in a body, can communicate nozzle and suck chambers R | 02-14-2013 |
20130062440 | HIGH FLOW COMPRESSED NATURAL GAS INJECTOR FOR AUTOMOTIVE APPLICATIONS - An injector ( | 03-14-2013 |
20130062441 | Fuel Injector - The fuel injector provides an oncoming flow, that is uniform and stable in time, of the spray-discharge orifices is produced and consequently, and a reduction in variance in the spray and flow-through characteristics variables. The fuel injector includes at least one excitable actuator and a valve element that is movable along a longitudinal valve axis, which collaborates in a sealing manner with a valve seat. Upstream of the valve seat, circumferentially a plurality of flow-through regions are provided, between which there are guidance regions for the valve element. The spray-discharge orifices downstream from the valve seats, whose number differs from the number of the flow-through regions, discharge the fuel finely atomized. At least two flow-through regions differ in size, such as circumferential width and/or radial depth, and/or contour. The fuel injector directly injects fuel into a combustion chamber of an engine using compression of a fuel/air mixture and spark ignition. | 03-14-2013 |
20130112781 | THERMALLY VOLUME-NEUTRAL STROKE TRANSMITTER, IN PARTICULAR FOR METERING VALVE WITHOUT HYDRAULIC COMPENSATOR - In addition to liquid in a thermal volume-neutral stroke transmitter, first and/or second displacement body(ies) is/are positioned in the stroke transmitter, for displacing the liquid. These three materials in the closed system are designed so that the stroke transmitter remains pressure-free during temperature changes. | 05-09-2013 |
20130112782 | INJECTION ASSEMBLY - An injection unit ( | 05-09-2013 |
20130153686 | FUEL INJECTOR - The present invention relates to a fuel injector for use in a fuel system of an internal combustion engine. The fuel injector has a supply passage for high pressure fuel and an injection nozzle. The injection nozzle includes a valve needle which can engage with a valve needle seating to control fuel delivery from the fuel injector. A first control valve is provided for controlling fuel pressure within a control chamber to control the valve needle. The fuel injector also includes a second control valve for controlling fuel pressure within a low pressure drain. The invention also relates to a control valve for controlling fuel pressure within a low pressure drain. | 06-20-2013 |
20130161421 | Multilayer Piezoelectric Element and Injector Using the Same - A multilayer piezoelectric element includes a plurality of piezoelectric layers and a plurality of metal layers stacked alternately. The plurality of metal layers include a plurality of low-filled metal layers having a lower filling rate of metal composing the metal layers than oppositely disposed metal layers adjacent to each other in a stacking direction. The plurality of metal layers may include a plurality of thin metal layers having a smaller thickness than oppositely disposed metal layers adjacent to each other in a stacking direction. Where the plurality of metal layers are composed mainly of an alloy, the plurality of metal layers may include a plurality of high-ratio metal layers having a higher ratio of a component constituting the alloy than oppositely disposed metal layers adjacent to each other in a stacking direction. | 06-27-2013 |
20130186986 | Fuel Injector Having a Reduced Number of Components - A fuel injector which includes an actuator having an electrical contact element, a plug, a fuel supply pipe, and an injection-molded housing part. The plug has a base body, an electrical connection element for an electrical connection with the electrical contact element of the actuator, and a rib which projects from the base body, the injection-molded housing part surrounding the electrical connection element of the plug and being injection-molded on the rib of the plug and the fuel supply pipe. | 07-25-2013 |
20130200180 | INJECTION VALVE WITH DIRECT AND SERVO DRIVE - A valve device for conveying a liquid includes a housing, a valve needle which is arranged such that it can be deflected in a valve-needle chamber of the housing, and a drive device for the valve needle, wherein the drive device comprises an electric drive component which brings about a direct deflection of the valve needle. Furthermore, the drive device includes a hydraulic drive component which can be activated in addition to the electric drive component and brings about a ballistic deflection of the valve needle. | 08-08-2013 |
20130214065 | FUEL-INJECTION VALVE FOR AN INTERNAL COMBUSTION ENGINE - Disclosed herein is a fuel injection valve for an internal combustion engine. The fuel injection valve includes a valve body ( | 08-22-2013 |
20130221137 | PRESSURE REGULATING VALVE - The invention relates to a pressure regulating valve for opening and closing a drain of a high-pressure accumulator ( | 08-29-2013 |
20130284828 | DEVICE FOR INJECTING FUEL - A device for injecting fuel includes an outwardly opening valve needle, a piezo actuator connected to the valve needle, a valve body having a first through-opening, and a holding body connected to the valve body and having a second through-opening. The valve body has a valve seat and a first guide region for guiding the valve needle, the valve needle being disposed in the valve body and in the holding body, and the first through-opening is formed in the valve body without undercutting. | 10-31-2013 |
20130284829 | INJECTION NOZZLE - Provided is an injection nozzle which is capable of maintain high response performance over a long period of time, in a manner compatible with an increase in fuel injection pressure of a high-pressure common rail system which is one type of fuel injection system for internal combustion engines such as diesel engines. The injection nozzle comprises a valve body | 10-31-2013 |
20130299609 | Method For Improving The Dimensional Accuracy Of A Fuel Injector Component, And Fuel Injector Component - In a final machining method for adapting a first surface of a fuel injector component to a second surface of said fuel injector component or of a second fuel injector component, or to a reference surface, e.g., for a common rail diesel injector with a register nozzle needle, the first surface and/or the second surface is deformed at least partially plastically in order to reduce a dimensional accuracy deviation which is possibly mutual. Furthermore, in a fuel injector component, e.g., a nozzle needle, nozzle needle sleeve, register nozzle needle, nozzle body, nozzle assembly and/or fuel injector, e.g., for a common rail injection system of a motor vehicle, a first surface of the fuel injector component and/or a second surface of said fuel injector component or of a second fuel injector component is deformed at least partially plastically in order to reduce a dimensional accuracy deviation. | 11-14-2013 |
20130313340 | VALVE IMPACT TYPE DISPENSING PUMP - A dispensing pump, and more particularly, a valve impact type dispensing pump that may be used in a process of manufacturing an electronic product and may dispense an accurate amount of a liquid, such as a liquid synthetic resin, at high speed. The present invention provides a valve impact type dispensing pump that can descend a valve rod at high speed and thus can dispense a liquid with high viscosity at high speed. The valve impact type dispensing pump can dispense an accurate amount of a liquid at high speed. Also, the valve impact type dispensing pump can dispense a liquid having high viscosity at high speed due to a fast descending speed of a valve rod. | 11-28-2013 |
20140014746 | EJECTOR - An ejector ( | 01-16-2014 |
20140097275 | FUEL INJECTOR WITH NOZZLE PASSAGES HAVING ELECTROLESS NICKEL COATING - Problems associated with soot production and coking build up in nozzle spray passages are addressed by plating a bore wall of an injector body tip piece with a primarily nickel coating using an electroless plating technique. The coating has an average thickness that is at least one order of magnitude smaller than an average diameter of the bore. | 04-10-2014 |
20140103146 | FUEL INJECTION VALVE - An injection hole inlet is disposed at the upstream side face of the injection hole plate in such a way that, assuming that a denotes the angle between respective lines obtained by vertically projecting a straight line that passes through the center of the injection hole inlet and the center of the valve seat and the major axis of the injection hole inlet onto a perpendicular plane that passes through the center of the injection hole inlet and is perpendicular to the center axis of the valve seat and assuming that β denotes the angle between respective lines obtained by vertically projecting the straight line that passes through the center of the injection hole inlet and the center of the valve seat and the minor axis of the injection hole inlet onto the perpendicular plane, α<β is satisfied. | 04-17-2014 |
20140117121 | FUEL INJECTION SYSTEM - A fuel injector is provided. The fuel injector includes a sleeve having a first end proximate an outlet; a piston slidingly received in the sleeve, the piston having a first end proximate the outlet; a pumping chamber at least partially defined by the sleeve between the first end of the piston and the outlet; and a normally-open inlet valve through which fuel passes to enter the pumping chamber. | 05-01-2014 |
20140131483 | FUEL INJECTION VALVE - A movable plate is movably accommodated in a pressure control chamber. A fixed plate is arranged above the movable plate, so that the movable plate is brought into contact with the fixed plate. The fixed plate has a high pressure passage for supplying fuel into the pressure control chamber and a low pressure passage for discharging the fuel from the pressure control chamber. A high pressure port and a low pressure port are formed at a lower end surface of the fixed plate. A first contacting surface is formed at the lower end surface and a first groove is formed in the first contacting surface for holding a part of fuel in a plate-contacted condition. | 05-15-2014 |
20140151469 | ANTI-ROTATION CLIP FOR A TWIST LOCK FUEL INJECTOR - A fuel injector with an anti-rotation clip for use in conjunction with a twist lock fuel injector inserted into a receiving fuel cup. The clip includes at least one connector leg which extends at least partially over the electrical connector for the fuel injector and locks the clip against rotation relative to the fuel injector electrical connector. A protrusion on a fuel cup arm engages a notch formed in the fuel cup to lock the arm against rotation relative to the fuel cup. | 06-05-2014 |
20140175193 | FUEL INJECTOR HAVING TURBULENCE-REDUCING SAC - A nozzle for a fuel injector is disclosed. The nozzle may have an internal axial nozzle bore. The nozzle may also have at least one orifice passing from the nozzle bore radially outward through a wall of the nozzle at a tip end. Further, the nozzle may have a sac volume formed in the tip end and defined by a bore radius and a tip radius. The bore radius may be generally perpendicular to the central bore. The tip radius may be generally parallel to the central bore. The tip radius may be less than the bore radius. | 06-26-2014 |
20140183286 | FUEL INJECTION VALVE - Provided is a fuel injection valve capable of stably injecting a fuel formed into a thin film. The fuel injection valve includes: a valve seat including a fuel path and a valve seat portion therein; a valve member including an abutment portion configured to sit on the valve seat portion, for opening and closing the fuel path through separation and contact of the abutment portion away from and with the valve seat portion; and a fuel chamber brought into communication with the fuel path, in which: the fuel chamber includes slit-like injection holes for injecting a fuel; and each of the injection holes has a slit-like shape for making fuel flows to collide against each other in a long axis direction of each of the injection holes to form a liquid film in a direction crossing the long axis direction. | 07-03-2014 |
20140191065 | FUEL INJECTION VALVE - A fuel injection valve that can favorably reduce the film thickness of fuel ejected from an outlet of an injection hole without relying on increase of the fuel pressure, whereby atomization of fuel spray can be favorably promoted, is provided. | 07-10-2014 |
20140203108 | FUEL INJECTOR AND METHOD FOR PRODUCING A FUEL INJECTOR - A fuel injector, including a valve insert and a plug extrusion coating, is described, the valve insert including a valve seat and a valve housing. The valve housing has an alignment device, which is equipped to align the valve insert in an injection molding die, and the plastic extrusion coating has a second alignment device which is equipped to align the fuel injector during assembly in an internal combustion engine. | 07-24-2014 |
20140203109 | INJECTION NOZZLE FOR AN INTERNAL COMBUSTION ENGINE - An injection nozzle ( | 07-24-2014 |
20140203110 | FUEL INJECTION SYSTEM HAVING A FUEL-CARRYING COMPONENT, A FUEL INJECTOR AND A CONNECTING ELEMENT - A connecting element for fuel injection systems is used for connecting a fuel injector to a fuel-carrying component. A connecting part is provided, which is fastened on the one side on a shoulder of the fuel-carrying component and, on the other side, on a shoulder of the fuel injector. For this purpose, the connecting part is developed at least partially as a pot spring. A fuel injection system having such a connecting element is also indicated. | 07-24-2014 |
20140203111 | FUEL INJECTION SYSTEM HAVING A FUEL-CARRYING COMPONENT, A FUEL INJECTOR AND A CONNECTING ELEMENT - A connecting element for fuel injection systems is used for connecting a fuel injector to a fuel-carrying component. For this purpose, the connecting element has a base body, which is connected on the one side in a form-locking manner to the fuel-carrying component and on the other side is connected in a form-locking manner to the fuel injector. The base body is developed as a bracket-shaped base body, the base body having a first arm, a second arm and a connecting web. The base body abuts on a first contact surface, which is provided on the first arm, on the one side against the fuel-carrying component and on a second contact surface, which is provided on the second arm, on the other side against the fuel injector. An elastic decoupling is provided between the first contact surface and the second contact surface. Furthermore, a fuel injection system having a fuel-carrying component, a fuel injector and such a connecting element is indicated. | 07-24-2014 |
20140231551 | Fuel Injector and Fuel Injector Assembly - A fuel injector may include a fuel injector body having a central longitudinal axis, a plate element for coupling the fuel injector to a fuel injector cup, a snap ring and a spring element is specified. The snap ring is operable to block a movement of the fuel injector body relative to the plate element in a first direction of the central longitudinal axis. The spring element is operable to bias the plate element in a second direction of the central longitudinal axis opposing the first direction of the central longitudinal axis to prevent a movement of the plate element relative to the fuel injector body during coupling to the fuel injector cup. | 08-21-2014 |
20140284405 | Fuel injection system having a fuel-carrying component, a fuel injector and a suspension - A suspension for fuel injection systems is used for connecting a fuel injector to a fuel-carrying component. A connecting body having a receiving space is provided for this purpose. The connecting body has an opening, via which a fuel fitting of the fuel injector is insertible at least partially into the receiving space of the connecting body. Furthermore, an annular element and an elastically deformable element are provided. Fuel fitting is supported via the annular element and the elastically deformable element along an axis of the receiving space of the connecting body. A fuel injection system having such a suspension is also indicated. The suspension allows for a soft coupling of the fuel injector to the fuel-carrying component at a desired target stiffness. | 09-25-2014 |
20140291422 | INJECTION NOZZLE - An injection nozzle for injecting fuel into a combustion chamber of an internal combustion engine comprises a nozzle body having a bore for receiving fuel from a supply line for pressurised fuel, an outlet from the bore for delivering fuel to the combustion chamber, in use, and a valve needle defining a needle axis and being slidable within the bore. The needle comprises a needle guide portion arranged to guide the needle within the bore. The injection nozzle further comprises a restriction within the bore for restricting fuel flow through the bore, and a restrictive element moveable with the needle and located upstream of the needle guide portion. At least a part of a downstream side of the restrictive element comprises a bevelled surface that extends to a peripheral edge of the restrictive element, the bevelled surface being non-perpendicular to the needle axis. | 10-02-2014 |
20140353408 | ANTI-ROTATION CLIP FOR A TWIST LOCK FUEL INJECTION - A fuel injector for an internal combustion engine having an elongated body with a fuel inlet end and a fuel discharge end. The injector body includes an outwardly extending plate attached at a position between its ends and this plate includes at least one radially outwardly extending tab so that the cross-sectional shape of the plate is noncircular. A fuel cup receives the fuel inlet end of the fuel injector and includes a radially inwardly extending ledge at a mid position of the cavity. This ledge includes a through bore complementary in shape to the shape of the plate so that, with the fuel injector and plate aligned at a predetermined angular assembly position, the plate passes through the ledge upon insertion of the fuel injector into the cavity. Thereafter, rotation of the fuel injector and attached plate to a locking position positions the tabs above the ledge thus locking the fuel injector to the fuel cup. | 12-04-2014 |
20140367498 | Fuel Injection Valve - A fuel injection valve is provided that can reduce variations in stroke length by reducing distortion during welding, and consequently can reduce variations in flow rate of injected fuel. The fuel injection valve has a nozzle; a fixed valve that is press-fit into a tip of the nozzle and has a fuel injection port from which the fuel is injected; and a movable element that forms a fuel seal section by abutting against the fixed valve, and opens and closes the fuel injection port. The fixed valve and the nozzle are fixed in place by welding at a position with no space due to press-fitting. A groove that serves as an empty space is provided in a continuation of a welded section that is formed in the fixed valve and the nozzle by the welding. | 12-18-2014 |
20150021417 | Fuel Injector And Method Of Making Same - The invention relates to a fuel injector ( | 01-22-2015 |
20150021418 | Lever Device and a Fuel Injection Valve - A lever device for a fuel injection valve includes a housing with a housing recess, at least one lever element arranged in the housing recess and having a coupling section coupled to a section of the housing, a drive element arranged in the housing recess and coupled to the at least one lever element to act upon the at least one lever element in the direction of a force-action axis, and an output element arranged in the housing recess and coupled to the at least one lever element such that the output element may be moved in the force-action axis direction by the at least one lever element. The coupling section of the lever element has at least one recess that defines at least two coupling section contact surfaces spaced apart from one another and resting against the housing section. | 01-22-2015 |
20150028135 | Lever Device and a Fuel Injection Valve - A lever device for a fuel injection valve includes a housing with a housing recess, at least one lever element arranged in the housing recess, a drive element arranged in the housing recess and coupled to the lever element(s) in order to act upon said at least one lever element in a direction of a force-action axis, and an output element arranged in the housing recess and coupled to the lever element(s) such that this output element is moveable in the force-action axis direction by the at least one lever element. Each lever element includes a coupling section designed or arranged such that the lever element is coupled to the housing, or to the output element, in a rotationally-fixed manner with respect to the force-action axis. | 01-29-2015 |
20150028136 | VALVE FOR METERING FLUID - A valve for metering a fluid, e.g., for the injection of fuel in a fuel-injection system of internal combustion engines, includes: an intake for the fluid; a metering orifice for the fluid; and an elongated, hollow-cylindrical flow channel leading from the intake to the metering orifice, the flow channel having an outer channel wall and an inner channel wall. In order to influence the hydraulic resonances resulting from the structural design in such a way that an excitation of critical structural modes caused by the installation is prevented, the flow channel is subdivided into at least two channel sections which are separated from one another, and a flow connection for the fluid is established between consecutive channel sections. | 01-29-2015 |
20150028137 | TIGHTLY EXTRUSION-COATED COMPONENT AND METHOD FOR PRODUCING SUCH A COMPONENT - A component which includes a base part, a sealing element, an insert element, and an extrusion coat which extends at least partially around the insert element and at least partially around the base part, the insert element being disposed between the extrusion coat and sealing element. | 01-29-2015 |
20150034742 | FUEL INJECTOR AND FUEL INJECTION DEVICE USING THE SAME - A fuel injector includes (i) a body including a distal end portion forming an injection port, a diameter reduction portion, and a diameter expansion portion, and (ii) a seal member attached to at least the diameter reduction portion of both the diameter reduction portion and the diameter expansion portion. When the body is inserted into an attachment hole communicating with a combustion chamber of an internal combustion engine, the seal member seals between an inner peripheral surface of the attachment hole and an outer peripheral surface of the body. The seal member includes a first taper portion chamfered and provided at an outer periphery of a distal end portion of the seal member in a case where the distal end portion of the seal member is placed at a position relatively close to the injection port. | 02-05-2015 |
20150041566 | APPARATUS FOR CONTROLLING NEEDLE VALVE LEAKAGE - A needle body for a fuel injector that controls or prevents high pressure fuel leaks by dynamically controlling the size of the clearance between a longitudinal bore in a nozzle body and the needle that travels along the bore. The longitudinal bore passes through a body portion and a clearance control protrusion of the needle body. The clearance control protrusion extends from the body portion into a nozzle chamber of a nozzle section of the fuel injector. The clearance control protrusion is configured to prevent expansion of the clearance that is typically associated with hydraulic forces caused by pressurized fuel in the clearance. The clearance control protrusion is configured so that as fuel pressure in the nozzle chamber increases, hydraulic forces act against an outer surface of the clearance control protrusion to prevent expansion of the portion of the clearance positioned within the clearance control protrusion. | 02-12-2015 |
20150053795 | CERAMIC PROTECTION FOR FUEL INJECTOR LINES - A fuel injector body comprising a fuel line defined by a passage therethrough and a ceramic cylinder disposed within the passage. The ceramic cylinder is a tube including a hollow passage for fuel flow therethrough. In addition, a method of protecting the fuel lines of a fuel injector is disclosed, comprising the steps of inserting a ceramic cylinder into at least passage for a fuel line of the fuel injector and adhering the ceramic cylinder within the passage. | 02-26-2015 |
20150060573 | Valve Assembly for an Injection Valve and Injection Valve - A valve assembly for an injection valve includes a valve body with a central longitudinal axis, the valve body having a valve body groove extending circumferentially around the valve body and being designed to take in a gasket, the valve body groove having a first wall section and a second wall section, the wall sections configured to be coupled to the gasket in a manner that the valve assembly is sealingly coupable with a cylinder head of a combustion engine, and an injection nozzle enabling a fluid flow through the valve assembly. The second wall section is arranged relative to the first wall section in axial direction away from the injection nozzle. The first wall section extends to a first radius and the second wall section extends to a second radius, and the first radius is bigger than the second radius. | 03-05-2015 |
20150060574 | OVERMOLDED COMPONENT WITH A LABYRINTH SEAL - A component having an insert part and an overmold that extends at least partly around the insert part, the insert part having at least one groove and the groove having an undercut at at least one edge, and the overmold at least partly filling the groove. | 03-05-2015 |
20150069151 | Fluid Injection Valve - A fluid injection valve includes a fluid inlet tube with a recess and a valve body including a central longitudinal axis. The valve body includes a cavity with a fluid outlet portion. The injection valve also includes a valve needle received in the recess and in the cavity. The valve needle is axially displaceable with respect to the fluid inlet tube and the valve body for preventing a fluid flow through the fluid outlet portion in a closing position and releasing the fluid flow through the fluid outlet portion in other positions. The injection valve includes a spring element arranged in the recess and operable to interact with the valve needle for biasing the valve needle in axial direction towards its closing position, wherein the spring element is configured such that a spring stiffness of the spring element depends on a pressure of fluid in the recess. | 03-12-2015 |
20150076256 | HIGH PRESSURE ELETROHYDRAULIC VALVE ACTUATOR - A system and method for operating a valve for an engine utilizing a high pressure actuating fluid that is used in the operation of fuel injectors. A pump may be used to increase the pressure of the actuating fluid, such as, for example, to 4000 psi. At least a portion of this high pressure actuating fluid may be delivered to a fuel injector. Additionally, at least a portion of the pressure actuating fluid may be delivered to an electro-hydraulic actuator. According to certain embodiments, the flow of the high pressure actuating fluid to the actuator may be controlled by spool valve. The spool valve may be part of the actuator. The use of the high pressure actuating fluid to operate the actuators may allow for a reduction in the actuators' size, which may allow for the actuator to be located in the valve. | 03-19-2015 |
20150102134 | Method Of Fabricating An Injector For A Combustion Engine, Armature-Needle Assembly And Fluid Injector - A method of fabricating an injector of a combustion engine includes providing a first base body and a second base body for a valve needle of the injector, forming the first base body such that a first base part with a first stop face is formed, providing an armature with a bore, forming the second base body such that a second base part with a second stop face and a third stop face is formed, disposing a section of the first base part and a section of the second base part in a bore of the armature, disposing the first and second base parts relative to each other such that the first stop face abuts the second stop face, and establishing a fixed coupling between the first and second base parts, wherein the armature is movable between the first stop face and the third stop face. | 04-16-2015 |
20150115068 | FUEL INJECTOR - A fuel injector configured as a high-pressure injection valve for the direct injection of fuel into a combustion chamber includes: a housing having an housing end face on the combustion chamber side; an actuator; a valve-closure member operable by the actuator; at least one outlet orifice in the housing end face on the combustion chamber side for the fuel, the valve-closure member selectively closing or opening the outlet orifice; and a ring provided round about the outlet orifice in the housing end face on the combustion chamber side. | 04-30-2015 |
20150115069 | Fuel Injection Valve - A fuel injection valve that injects fuel directly into a cylinder of an internal combustion engine includes: a nozzle inserted into a fuel injection valve fitting hole formed in the cylinder; a cylindrical tip seal holder attached to the nozzle; and an annular seal member that is fitted to the tip seal holder and seals between an inner circumferential surface of the fuel injection valve fitting hole and an outer circumferential surface of the tip seal holder. | 04-30-2015 |
20150122917 | Liquid Intrusion Sealing Structure Of A Urea Injector - A fluid injector includes a body associated with an outlet of the injector. An inlet tube is coupled to the body and has an open end for receiving fluid to be injected. An inlet cup has an open end and covers the open end of the inlet tube and also covers a portion of the body. The injector includes sealing structure including a primary seal providing a seal between the inlet cup and the inlet tube, a secondary seal between the body and the inlet cup and constructed and arranged to prevent liquid that is external to the injector from entering an interior of the injector through the open end of the inlet cup, and a surface feature on the body or on the inlet cup constructed and arranged to compress a portion of the secondary seal between the inlet cup and the body. | 05-07-2015 |
20150122918 | Nozzle Needle for an Injector for Injecting Fuel Into Cylinder Combustion Chambers of an Internal Combustion Engine, and an Injector With Such a Nozzle Needle - A nozzle needle for an injector for injecting fuel includes at least one guiding section with a recess and a guiding surface configured to rest against an inner surface of a nozzle body of the injector, the recess at least partially delimiting the guiding surface and being configured to allow a flow of fuel along the guiding section, and the guiding surface being guided about the longitudinal axis of the nozzle needle in a helical manner. | 05-07-2015 |
20150136877 | FUEL INJECTION VALVE - When injection-hole inlets and injection-hole outlets are projected vertically onto an X-Y plane (N) perpendicular to a valve-seat axial center, an injection-hole arrangement angle (A), which is formed by a straight line (a) passing through a center of the injection-hole inlet of a reference injection hole and the valve-seat axial center and a straight line (b) passing through a center of the injection-hole inlet of the injection hole neighboring the reference injection hole and the valve-seat axial center on the plane (N), is set so as to become smaller as being closer to a Y-axis. A fuel turn angle (a) on a wide-angle side, which is formed by the straight line (a) and a straight line (c) passing through a center of the injection-hole inlet and a center of the injection-hole outlet on the plane (N), has a relationship: 90°<α<180°. | 05-21-2015 |
20150292460 | FUEL INJECTION VALVE - A fuel injection valve includes: a needle valve including a seat portion on a tip side thereof; a nozzle body including a seat surface on which the seat portion is placed, and a swirl stabilization chamber on a downstream side of the seat surface, the nozzle body having an injection hole formed so as to have an inlet in the swirl stabilization chamber; a swirl flow generating portion having swirl grooves configured to give a swirling component to fuel to be introduced into the swirl stabilization chamber; and a fuel collision portion provided in a tip portion of the needle valve, the fuel collision portion being configured such that, in a state where the needle valve is opened, the fuel collision portion intersects with a virtual surface extended toward the injection hole from the seat surface included in the nozzle body. This allows dead fuel to be retained in the swirl stabilization chamber and to be introduced into the injection hole in a state where a swirling component has been given to the dead fuel from fuel having the swirling component. | 10-15-2015 |
20150292461 | Valve Assembly For A Fuel Injector And Fuel Injector - A valve assembly includes a valve body, a movable valve needle, a movable armature, and an elastic member. The armature is axially moveable with respect to the needle so that, when the needle is in the closing position, the armature is movable from a first position further in the second direction to a second position against the bias of the elastic member. The elastic member has a plurality of beams, each beam having a first end and a second end which are axially and radially offset with respect to each other, and the armature is operable to reduce the axial offset between the first end and the second end when moving from the first to the second position. | 10-15-2015 |
20150292680 | GAS FILLING NOZZLE WITH SAFETY FUNCTION - A gas filling nozzle with safety function includes a valve seat, a first thimble, a safety valve, an inner sleeve and a first spring; the first thimble is sleeved in the valve seat, the safety valve is disposed at the top of the first thimble, and the inner sleeve is combined at the top of the valve seat, thereby allowing the first spring to be disposed between the inner sleeve and the safety valve. So when the gas filling nozzle is subject to a high temperature environment, the high-pressure gaseous/liquid mixture inside a gas container is able to be discharged to the exterior through the safety valve, thereby preventing the gas container from exploding. | 10-15-2015 |
20150300304 | INJECTION VALVE - A fuel injection valve includes: a magnetic coil; an armature; and a valve needle connected to the armature for actuating a valve closing body which forms, together with a valve seat surface, a seal seat. Formed downstream from the valve seat surface is a spray opening that has, at the transition from a first to a second spray opening segment, a tear-off edge such that the complete opening angle of the spray opening at the tear-off edge is greater than 270° over the entire circumferential tear-off edge, so that, going out from the tear-off edge, on the floor of the second spray opening segment of the spray opening, there extends a circumferential floor region that is recessed behind the transition plane in which the tear-off edge is situated. | 10-22-2015 |
20150345445 | fuel injection system including a fuel-guiding component, a fuel injector, and a connecting element - A connecting element for connecting a fuel injector of a fuel injection system to a fuel-guiding component includes a base body in which a receiving chamber for a fuel connector of the fuel injector is provided. The fuel connector, which is situated at least partially in the receiving chamber, is supported at least indirectly on the base body. The fuel connector is elastically supported on the base body in a radial direction. | 12-03-2015 |
20150345450 | RESTRICTIVE FLOW PASSAGE IN COMMON RAIL INJECTORS - An injector has an injector body including an injector cavity defining an inner wall and a longitudinal axis, an injector orifice and a plunger slidably disposed within the injector cavity. The plunger has an outer portion and an inner portion at different locations longitudinally along the plunger. The inner portion has a plurality of surface portions including a guiding portion configured to substantially mate with the inner wall of the injector cavity, guide the plunger to slidably move in a direction along the longitudinal axis and substantially prevent the plunger from laterally translating within the injector cavity. The plurality of surface portions also includes a restriction portion configured to form a restrictive cavity between an exterior surface of the inner portion and the inner wall of the injector cavity axially along a length of the inner portion. | 12-03-2015 |
20150354521 | FUEL CONTROL VALVE - In an electronically operated fuel control valve for a diesel engine, a poppet valve with a stem having a guide surface length portion in a guide bore exposed to a large axial fuel pressure gradient during a fuel injection event, the radial space between the guide surface length portion and the bore being different proximal to a head of the poppet valve than the radial space between such elements distal from the head. | 12-10-2015 |
20150360245 | SPRAY HEAD ASSEMBLY - A spray head assembly includes a press head, a nozzle, a plunge, a movable member and a resilient member. The press head has a space, a first connection portion and a press end. The nozzle is connected to the press head and has a second connection portion connected to the first connection portion. The plunge is inserted in an outlet of the nozzle has a seal end and a third connection portion. The movable member is located in the space and connected to the plunge. The movable member has a fourth connection portion which is connected to the third connection portion. The movable member is pushed by liquid. The resilient member is mounted to the tubular portion and biased between the restriction portion and push portion. When the press end is pushed, the liquid pushes the movable member so as to move the plunge to open the outlet. | 12-17-2015 |
20150361938 | Fuel Injection Valve - An object of the invention is to provide a fuel injection valve that applies a swirl to an upstream side of a seat section to shorten spray penetration. | 12-17-2015 |
20150377202 | Fuel Injection Valve - In a fuel injection valve used in an internal combustion engine, fuel spray travel distance is shortened. | 12-31-2015 |
20160003206 | Valve Assembly for a Fluid Injection Valve and Fluid Injection Valve - A valve assembly for a fluid injection valve has a longitudinal axis and includes a valve seat and a valve disc. The valve seat has an orifice that is laterally offset from the longitudinal axis. The valve disc has a fluid passage which, in a first angular position of the valve disc, is positioned in such fashion that it overlaps the orifice at an interface of the valve disc and the valve seat to establish a fluid path through the valve disc and the valve seat for dispensing fluid from the valve assembly. The valve disc is rotatable around the longitudinal axis with respect to the valve seat from the first angular position to a second angular position, wherein the valve seat and the valve disc mechanically interact to seal the orifice in the second angular position. | 01-07-2016 |
20160025053 | FUEL INJECTION SYSTEM HAVING A FUEL-CONDUCTING COMPONENT, A FUEL INJECTION VALVE AND A CONNECTION ELEMENT - A connecting element connecting a fuel injection valve to a fuel-conducting component includes: a main body having a receptacle space into which a fuel connector of the fuel injection valve is introduced; and a fastening element. At least one opening is provided in a wall of the main body surrounding the receptacle space. The fastening element for fastening the fuel connector on the main body is brought into the receptacle space at least partly through the at least one opening. At least one elastic bearing element is provided, and the fastening element brought at least partly through the opening into the receptacle space is supported on the wall of the main body via the at least one elastic bearing element. | 01-28-2016 |
20160025057 | FUEL INJECTION NOZZLE - A Laval shape is formed between the nozzle seat surface and needle tip portion. An injection hole also has the Laval shape. When the needle lift amount is small, a fuel flow velocity reaches an acoustic velocity in valve-opening portion. The fuel flow velocity further accelerated to a supersonic velocity at the Laval shape. When the needle lift amount is large, the fuel flows into the injection hole without a velocity decrease. Thus, the fuel flow velocity reaches the supersonic velocity at the Laval shape. | 01-28-2016 |
20160047346 | FUEL INJECTION VALVE - In a fuel injection valve having a nozzle hole plate wherein a nozzle hole is formed, the nozzle hole is formed with a flow path cross-section having an oval shape that has long axes and short axes, and the nozzle hole is formed having a tapered shape in which a flow path sectional area becomes larger from an entry-side open end portion toward an exit-side open end portion. The nozzle hole is formed such that a second angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in an oblique section along the short axes of the entry-side open end portion and the exit-side open end portion, is greater than a first angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in a longitudinal section along the long axes of the entry-side open end portion and the exit-side open end portion. | 02-18-2016 |
20160090952 | SOLENOID FLUID INJECTOR WITH CORROSION PREVENTION STRUCTURE - A fluid injector includes a valve structure movable in the passageway between a first position and a second position. The valve structure includes a hollow tube having a longitudinal axis and a valve member connected to an end of the tube by a weld, with a weld zone being defined inside of the tube generally adjacent to the weld. The tube has surfaces defining a through-hole that is disposed transversely with respect to the longitudinal axis of the tube. The through-hole permits the fluid to enter an interior of the tube. Corrosion prevention structure is disposed in the tube between the through-hole and the valve member to prevent the fluid in the tube from accessing the weld zone. | 03-31-2016 |
20160097359 | FUEL INJECTION VALVE - An object of the present invention is to improve the exhaust emission for a fuel injection valve having a stepped injection hole constructed so that a small diameter portion and a large diameter portion are communicated with each other with a stepped portion intervening therebetween. The present invention resides in a fuel injection valve comprising a cylindrical nozzle body which has a tip portion formed to have a conical shape, an injection hole which penetrates from an inner circumferential surface to an outer circumferential surface of the nozzle body, the injection hole being constructed so that a small diameter portion, which is positioned on a side of the inner circumferential surface of the nozzle body, is communicated with a large diameter portion which is positioned on a side of the outer circumferential surface of the nozzle body, with a stepped portion intervening therebetween, and a valve plug which is accommodated slidably in the nozzle body and which opens/closes the injection hole, wherein a ratio of the hole diameter of the large diameter portion with respect to the hole diameter of the small diameter portion is not less than 3.1 and not more than 4.0, a ratio of a length of the large diameter portion with respect to a length of the small diameter portion is not less than 0.25 and not more than 0.55, and a ratio of the length of the large diameter portion with respect to the hole diameter of the large diameter portion is not less than 0.4 and not more than 1.6. | 04-07-2016 |
20160103347 | Nozzle Head and Liquid Dispensing Device - The circumferential part of an opening of an ejection part included in a nozzle head is formed in the shape of a convex curved plane. A liquid crystal droplet adhered to the portion with the shape of a convex curved plane of the ejection part smoothly flows down along the outer surface of the ejection part and is adhered to the opening end of the opening. The liquid crystal droplet adhered to the opening end of the opening is absorbed into the liquid crystal droplet to be ejected through the opening and is dispensed downward together with the liquid crystal droplet. This suppresses a large liquid crystal pool being formed on the outer surface of the ejection part. As a result, such problems that liquid crystal to be dispensed is absorbed into a liquid crystal pool while not being dispensed downward and that a large amount of liquid crystal is unnecessarily dispensed from a liquid crystal pool are both be suppressed. In other words, liquid crystal may appropriately be dispensed. | 04-14-2016 |
20160108878 | Filter For A Fluid Injection Valve, Fluid Injection Valve And Method For Producing A Filter For A Fluid Injection Valve - A filter for a fluid injection valve includes a filter sleeve and a fastening element. The fastening element includes a fitting portion for fastening the filter in the fluid injection valve and a connection portion mechanically interacting with a first part of the filter sleeve for connecting the filter sleeve and the fastening element. The filter sleeve includes a second part arranged inside the fastening element and disposed at a distance from the fitting portion of the fastening element. A fluid injection valve and a method for producing the filter are also disclosed. | 04-21-2016 |
20160115927 | FUEL INJECTION VALVE - A high-pressure-side valve portion makes contact with and moves from a high-pressure seat surface formed in a body to control communication between a control chamber communication passage and a high-pressure passage. A low-pressure-side valve portion makes contact with and moves from a low-pressure seat surface formed in the body to control communication between an exhaust passage and a second intermediate chamber. A releasing portion in the high-pressure-side valve portion communicates with the control chamber communication passage when the high-pressure seat surface is in contact with the high-pressure-side valve portion to block the control chamber communication passage from the high-pressure passage. A valve element internal passage is formed in the valve element to communicate the releasing portion with the second intermediate chamber. | 04-28-2016 |
20160138542 | Fuel Injection Valve For A Combustion Engine - A fuel injection valve for a combustion engine comprises a valve body with a valve cavity and a nozzle body. The nozzle body may limit a free volume of the valve cavity and comprises at least one nozzle aperture. The nozzle body may comprise a surface facing a combustion chamber of the combustion engine and at least partially surrounding the at least one nozzle aperture. The surface comprises a first area designed to form a wetting angle (θ) with a fluid, which is larger than 90°. | 05-19-2016 |
20160153415 | DYNAMIC VALVE SEAL ARRANGEMENT | 06-02-2016 |
20160160820 | INJECTOR ARRANGMENT - A fuel injector includes an injector body with a bore; an injector needle located within the bore and engageable with a needle seat to control fuel injection through an injector outlet; an armature member, the armature member being engageable with an armature seat; on the injector needle, the injector needle in part and the armature member in part defining a control chamber; an actuator arrangement arranged to control fuel pressure within the control chamber such that fuel pressure variations within the control chamber controls movement of the injector needle relative to the needle seat wherein the actuator arrangement is arranged to be capable of moving the armature member from a seated position in which it engages the armature seat to an unseated position in which the armature member has moved relative to the armature seat in order to bring the control chamber into fluid communication with a low pressure drain. | 06-09-2016 |
20160177904 | FUEL SUPPLY UNIT | 06-23-2016 |
20160199857 | MODULAR JETTING DEVICES | 07-14-2016 |