Entries |
Document | Title | Date |
20080210788 | Lifting Apparatus and Injection Valve - A lifting apparatus comprising a counter bearing ( | 09-04-2008 |
20080217438 | ELECTROMAGNETIC FUEL INJECTION VALVE - In an electromagnetic fuel injection valve, a valve housing is formed by sequentially connecting a valve seat member, a magnetic cylinder, a nonmagnetic collar, and a stationary core. A coil housing is fittingly fixed to an outer periphery of the magnetic cylinder, and houses a coil assembly provided in an outer periphery of the stationary core. The coil housing includes a shell part surrounding the coil housing, an annular bent part bent radially inward from a front end of the shell part, and a cylindrical boss part projecting forward from a front end of the annular bent part. An inner peripheral surface of the annular bent part and an inner peripheral surface of at least a rear half part of the boss part are shrinkage-fitted to an outer peripheral surface of the magnetic cylinder. Thus, it is possible to eliminate distortion propagating to the magnetic cylinder, and eliminate a gap from fitted portions between the magnetic cylinder and the coil housing to improve magnetic efficiency, thereby exerting stabile fuel injection characteristics. | 09-11-2008 |
20080251612 | Unit Fuel Injector With Magnet Valve, and Method For Installing the Magnet Valve - A unit fuel injector is presented in which a valve member and an armature of a magnet valve are fixedly joined together, so that the dynamic performance of the magnet valve is improved, and the adjustment and calibration of the magnet valve are also simplified. | 10-16-2008 |
20080251613 | Electromagnetic Fuel Injection Valve - An electromagnetic fuel injection valve is provided in which a cylindrical magnetic body is welded to a valve seat member having at the rear end thereof a tubular press-fit portion press-fitted into a front portion of the cylindrical magnetic body, a valve body is housed in the valve seat member while being spring-biased in a direction that seats the valve body on a valve seat, and a movable core facing a fixed core is coaxially connected to the valve body, wherein the valve seat member ( | 10-16-2008 |
20080308658 | Fuel Injector - A fuel injector for fuel-injection systems of internal combustion engines includes a solenoid coil, an armature cooperating with the solenoid coil, a valve sleeve, and a support tube, situated in the valve sleeve, which is used as inner pole for the solenoid coil. The valve sleeve is made of a material having low magnetic permeability. | 12-18-2008 |
20090008483 | Fuel injector for an internal combustion engine - In a fuel injector for an internal combustion engine comprising an injector housing including a valve element as well as a number of piezo-crystals stacked on top of one another for actuating the valve element, wherein the stack of piezo-crystals is supported by a carrier element which is disposed in a cavity of the injector housing in spaced relationship therefrom, a first seal is provided in a gap between the housing and the carrier element to close a fuel space in a sealed fashion and a further sealing element is located at a distance from the first seal in the gap so that a cavity is formed between the first seal and the sealing element for collecting fuel possibly leaking through the first seal. | 01-08-2009 |
20090084873 | Gaseous Fuel Injector for Internal Combustion Engines - An injector of gaseous fuels for internal combustion engines includes a valve body into which the fuel is admitted by an inlet aperture and from which it is discharged by an outlet aperture, and a seating associated with a respective shutter. The shutter includes a diaphragm and a moving armature of an electromagnet held in a centred position by the diaphragm. The electromagnet is capable of causing, in a controlled manner, movement of the shutter relative to the seating from and to a position of shutting off the seating to allow or shut off the flow of fuel through the seating. The seating has a cross-section for passage of the fuel having the form of at least one slot extending along a first direction of development predominant with respect to a second direction of transverse development of the cross-section and the cross-section has a perimeter sealing edge with a cross-section of substantially rounded shape capable of providing sealing contact against a surface of the shutter facing it. | 04-02-2009 |
20090127354 | FUEL INJECTION VALVE - A coil is located radially outside of a cylindrical pipe and configured to generate a magnetic field when being energized. A stationary core is located radially inside of the pipe. A moving core is located radially inside of the pipe and opposed to the stationary core. The moving core is configured to be attracted to the stationary core by magnetic attraction force generated therebetween. A valve element is axially movable together with the moving core to open and close a nozzle hole for injecting fuel. A housing surrounds both an outer circumferential periphery of the coil and one end of the coil in an axial direction. A cover surrounding an other end of the coil in the axial direction. The pipe and the housing are integrally formed and one component. | 05-21-2009 |
20090127355 | FUEL INJECTION VALVE - A coil is located radially outside of a pipe. An inner connector is located radially inside of the pipe. A moving core is located radially inside of the pipe and opposed to the inner connector. A housing surrounds both an outer circumferential periphery of the coil and one axial end of the coil. A cover surrounds an other axial end of the coil. An outer connector leads fuel into the pipe. The pipe and the cover are integrally formed and one single component as a with-cover pipe member. The inner connector and the outer connector are integrally formed and an other single component as a connector member. The connector member is partially inserted in the axial direction radially inside the pipe of the with-cover pipe member. | 05-21-2009 |
20090127356 | FUEL INJECTOR - The invention relates to a fuel injector for injecting fuel into a combustion chamber, having a solenoid valve for controlling a mini-servo valve. A movable armature can be placed in a sealing fashion on a valve seat in a lower armature chamber, wherein in addition the mini-servo valve is held in an injector body and seals a control line against a flat seat. By means of the flat seat, during an actuation of the solenoid valve, the control line can be relieved of pressure from a high fuel pressure to a return pressure into at least one return line. A mechanism for reducing pressure oscillations are provided in the at least one return line, which includes at least one diaphragm cell which is held in a recess and which is placed in fluidic connection with the at least one return bore. A fuel injector with the mechanism for reducing pressure oscillations is therefore created in the at least one return line which operates without a leakage flow and has a simple and effective function. | 05-21-2009 |
20090159729 | FUEL INJECTION VALVE - A fuel injection valve includes a housing, a stator, a movable core, a coil, a nozzle hole, a valve member, and at least one communicating passage. The housing receives the stator and movable core. An end face of the movable core has a non-contact surface and a contact surface. The non-contact surface and the stator define a space when the contact surface contacts the stator. The valve member is slidably received in a bore of the movable core. The valve member has a stopper engageable with the movable core such that the valve member is axially movable together with the movable core. The at least one communicating passage connects the space with a corresponding one of a first fuel passage and a second fuel passage of the housing. | 06-25-2009 |
20090179089 | Variable shim for setting stroke on fuel injectors - A variable shim and valve seat assembly for applications in a solenoid actuated fuel injector includes a variable shim having a face, a valve seat having a top surface that interfaces with the face, and mating features integrated in the face of the variable shim and the top surface of the valve seat. The mating features provide axial displacement of the valve seat through rotation of the valve seat relative to the variable shim. The mating features may be ramped surfaces. The amount of seat displacement is dependent on the designed ramp angle, the number of ramps, and the degree of rotation. Once the desired valve stroke is set, the seat is welded to the injector body to achieve a leak free interface. Tight stroke setting tolerances can be achieved by applying an axial load to the seat during stroke setting and welding. | 07-16-2009 |
20090179090 | Plastic-Metal Connection and Fuel Injector Having a Plastic-Metal Connection - A fuel injector for fuel ignition systems of internal combustion engines includes a magnetic circuit having a core, a magnetic coil and an armature, and a movable valve needle, which has a valve-closure member that cooperates with a fixed valve seat, the valve seat being shaped on a valve-seat member and being provided with a valve-seat support in which the valve-seat member is inserted. At least one metallic component of the fuel injector, in this context, has a serrated structure on its outer circumference for producing a solid connection to a corresponding component made of plastic. The plastic components may be the connection piece, the valve-seat support, the coil shell and the connecting pipe of the valve needle. The fuel injector is particularly suitable for use in fuel-injection systems of mixture-compressing internal combustion engines having externally supplied ignition. | 07-16-2009 |
20090184184 | Fuel Injector and Method for Its Mounting - A fuel injector, in particular a fuel injector for fuel-injection systems of internal combustion engines, having an inflow nipple for the connection to a fuel-distributor line, a nozzle body disposed downstream from the inflow nipple, a magnetic circuit element, which includes a solenoid coil an inner pole, and an outer pole, as well as an armature, which is in force-locking connection with a valve needle such that a valve-closure element disposed at the valve needle lifts off from a valve-seat surface when solenoid coil is energized, the inflow nipple and the nozzle body being produced as deep-drawn components, and the inflow nipple and the nozzle body being fixed in place on the magnetic circuit element. | 07-23-2009 |
20090200405 | FUEL INJECTION VALVE - A coil is provided radially outside a housing. Each of a stator and a moving core is formed from a magnetic material and substantially in a tubular shape. The stator and the moving core are located radially inside the housing and opposed to each other in an axial direction. The moving core is configured to move toward the stator when being drawn by magnetic attractive force caused between the moving core and the stator in response to energization of the coil. A valve element is movable together with the moving core in the axial direction and configured to open and close a nozzle hole for controlling fuel injection. The moving core and the valve element are separate components. The moving core has an inner periphery defining a through hole in which the valve element is slidable in the axial direction. The inner circumferential periphery has a surface-hardened layer. | 08-13-2009 |
20090266920 | Electromagnetic fuel injector for gaseous fuels with anti-wear stop device - Electromagnetic fuel injector for gaseous fuels comprising: an injection nozzle controlled by an injection valve; a movable shutter to regulate the flow of fuel through the injection valve; an electromagnetic actuator, which is suitable to move the shutter between a closed position and an open position of the injection valve and comprises a fixed magnetic pole, a coil suitable to induce a magnetic flux in the magnetic pole, and a movable anchor suitable to be magnetically attracted by the magnetic pole; an absorption element, which is made of an amagnetic elastic material and is arranged between the magnetic pole and the anchor; and a protective element, which is made of a magnetic metal material having high surface hardness and is interposed between the absorption element and the anchor. | 10-29-2009 |
20090289130 | Laminated Piezoelectric Element, Jetting Device Provided With the Laminated Piezoelectric Element, and Fuel Jetting System - A laminated piezoelectric element having a laminated structure in which a plurality of piezoelectric layers and a plurality of internal electrodes are alternately laminated is provided. This laminated structure has an opposing section wherein an internal electrode on an anode side and an internal electrode on a cathode side which are adjacent to each other in the laminating direction, oppose in the laminating direction, and an end-side non-opposing section situated in a position closer to end in the laminating direction than the opposing section. This end-side non-opposing section has a porous section having porosity larger than that of the internal electrodes. | 11-26-2009 |
20090314860 | Z orifice feature for mechanically actuated fuel injector - A mechanically actuated electronically controlled fuel injector (MEUI) includes a first electrical actuator that controls the position of a spill valve, and a second electrical actuator to control pressure on a closing hydraulic surface associated with a directly operated nozzle check valve. The fuel injector is actuated via rotation of a cam to move a plunger to displace fuel from a fuel pumping chamber either to a spill passage, or at high pressure out of a nozzle outlet of the fuel injector for an injection event. The minimum controllable fuel injection quantity, especially as it relates to small closely coupled post injections following a large main injection, is accomplished by the inclusion of a Z orifice passage that maintains a fluid connection between a needle control chamber and the nozzle supply passage. The inclusion of the Z orifice passage slows the rate at which pressure drops in the needle control chamber to commence an injection event, but also hastens the rate at which pressure builds in the needle control chamber to end an injection event. The result is a smaller post injection quantity and, if desired, a longer, shorter or same dwell time between injection events. | 12-24-2009 |
20090321542 | FUEL INJECTOR EQUIPPED WITH A METERING SERVOVALVE FOR AN INTERNAL COMBUSTION ENGINE - A fuel injector has an injector body and a control rod, which is movable in the injector body along an axis to control the opening/closing of a nozzle that injects fuel into a cylinder of the engine; the injector body houses a metering servovalve having a control chamber, which is axially delimited by the control rod and communicates with an inlet and with a discharge channel; the metering servovalve is provided with a shutter, which slides axially on an axial guide, from which the discharge channel exits, to open and close the discharge channel and, in consequence, vary the pressure in the control chamber; the discharge channel has at least two restrictions having calibrated passage sections and arranged in series with each other to divide the pressure drop along the discharge channel. | 12-31-2009 |
20100006678 | Multi-Layer Electronic Component and Method for Manufacturing the Same - A multi-layer electronic component that can be repetitively operated under high voltage, high temperature and high humidity is provided. | 01-14-2010 |
20100019070 | INTERNAL COMBUSTION ENGINE GAS FUEL FEED SYSTEM, AND RELATIVE ELECTRO-INJECTOR - A system for feeding gas fuel to an internal combustion engine, having: a fuel tank; fluidic connector along which fuel flows, and interposed fluidically between the tank and a cylinder of the engine; and an electro-injector fluidically in series with respect to the fluidic connector, and which is interposed between the tank and the cylinder, and is activated selectively to disable or enable fuel flow to the cylinder; the electro-injector is positioned with respect to the fluidic connector solely by connecting at least an inlet or outlet of the electro-injector to at least one pipe defined by the fluidic connector. | 01-28-2010 |
20100133363 | Multi-point low pressure inductively heated fuel injector with heat exchanger - A fuel injector ( | 06-03-2010 |
20100147976 | BOTTOM FEED FUEL INJECTORS - A liquid fuel injector connected to the fuel line manifold and return line manifold by plastic tubing, standard petrol fittings, or high pressure hosing so aiding ease of installation, each injector having a separate inlet and return line to assist in fuel temperature control. The injectors are designed to assist in keeping the temperature of the fuel as low as possible with the injector coil not being cooled by the fuel, but by ambient air. | 06-17-2010 |
20100176223 | Stator assembly and fuel injector using same - A fuel injector for a common rail fuel system includes a common rail inlet port fluidly connected to a high pressure common rail, and a cooling inlet fluidly connected to an output from a lower pressure fuel transfer pump. The cooling fluid circulates internally through the fuel injector to cool a single pole solenoid via both internal and peripheral cooling passages. In order to accommodate a small spatial envelope while providing superior performance, a thin insulating layer may separate the solenoid coil winding from an inner pole piece, and small flux gap clearances may permit a flux carrying portion of the injector body to be a portion of the single pole solenoid assembly. | 07-15-2010 |
20100187336 | Injection device - An injection device for injecting a medium, including a valve arrangement with a valve member forming a seal at a valve seat, wherein the valve arrangement is arranged in the medium to be injected, an actuator device with an actuator, a plunger and a return element, and a pulse-transmitting device which is arranged between the valve arrangement and the actuator device, which separates the valve arrangement from the actuator device in a fluid-tight manner and which transmits a pulse generated by the actuator device to the medium to be injected in order in that manner to open the valve arrangement and inject medium. | 07-29-2010 |
20100213287 | FLUID INJECTOR HAVING A REED VALVE - With reference to FIG. | 08-26-2010 |
20100219266 | FUEL INJECTOR ASSEMBLY - A control valve includes a main body, the first coil assembly arranged on the first side of the main body and having the first contact surface and the first through hole extending from the first contact surface, the second coil assembly arranged on the second side of the main body and having the second contact surface and the second through hole extending from the second contact surface, and a spool arranged within the main body and configured to move between the first and second contact surfaces. The spool has the third contact surface facing the first contact surface, the fourth contact surface facing the second contact surface, and the third through hole extending from the third contact surface to the fourth contact surface. A surface pattern is formed on one or more of the first, second, third and fourth contact surfaces and includes the first recessed portion substantially extending from an inner circumference to an outer circumference of the corresponding one of the first, second, third and fourth contact surfaces. | 09-02-2010 |
20100282874 | Multi-Layer Piezoelectric Element and Injection Apparatus Using the Same - A multi-layer piezoelectric element of high durability wherein external electrodes do not peel off the surface of a stack even when operated continuously over a long period of time under a high electric field and a high pressure, a method for manufacturing the same and an injection apparatus using the same are provided. The multi-layer piezoelectric element comprises a stack | 11-11-2010 |
20100288857 | FUEL INJECTION VALVE - There is obtained an internal combustion engine fuel injection valve in which, by suppressing increase in production costs, deterioration in the accuracy of a flow rate, and variations in various kinds of characteristics caused by a change in the atmospheric air pressure, the quality of atomized fuel spray is improved. | 11-18-2010 |
20100294862 | METHOD FOR ADJUSTING THE VALVE STROKE - The invention relates to a method for adjusting the valve stroke or a closing duration of a solenoid valve for actuating a fuel injector. First, the screwing of a magnet adapter nut in a first screwing course on an injector body is effected until a target stroke for the valve stroke is attained at a first torque. Upon attainment of the target stroke at the first torque, a further rotation takes place, at a differential torque. Next, the magnet adapter nut is unscrewed until a torque is reliably undershot. After that, rescrewing of the magnet adapter nut takes place in a second screwing course until the target stroke is attained at a second torque. | 11-25-2010 |
20110006137 | SEALED ELECTRIC FEEDTHROUGH - The invention relates to a fuel injector having a magnetic assembly, a magnetic core, and a magnetic coil. The magnetic assembly is accommodated in a magnetic sleeve. The magnetic sleeve is provided with feedthroughs for electric contacting pins of the magnetic coil. Elastic sealing elements are inserted into the feedthroughs of the magnetic sleeve such that a pretensioning force acting in radial direction is applied to the contacting pins of the magnetic coil in the mounted state. | 01-13-2011 |
20110147495 | Fuel Injection Systems and Armature Housings - A housing for an armature of a fuel injector, a fuel injector and a fuel injection system are disclosed. The armature housing includes a first cylindrical portion for slidably accommodating the armature pin. The first cylindrical portion has a minimum inner diameter that is closely matched to the maximum outer diameter of the armature pin. A second cylindrical portion of the armature housing accommodates the armature. The second cylindrical portion has an inner minimum diameter that is closely matched to the maximum outer diameter of the armature. The disclosed armature housing provides more reliable and more consistent movement of the armature. | 06-23-2011 |
20110192919 | NOZZLE OF A VALVE - A nozzle of a valve includes a nozzle edge limiting a nozzle opening with a sealing surface that can be sealed or released by a nipple. Spaced apart from the nozzle edge at least one supporting surface for the nipple is provided on the nozzle. The supporting surface is spaced apart from the nozzle edge by a distance area. | 08-11-2011 |
20110248103 | AVOIDANCE OF SPARK DAMAGE ON VALVE MEMBERS - A solenoid operated valve assembly is provided. The valve assembly may include a solenoid having a solenoid coil and an armature movable under influence of the solenoid coil. The valve assembly may also include a valve member operably connected to the armature and configured to selectively contact a valve seat. The valve assembly may further include an outer body containing the solenoid, the armature, the valve member, and the valve seat. In addition, the valve assembly may include a grounding device including an electrically conductive element disposed between the valve member and the outer body. | 10-13-2011 |
20110309166 | Electromagnetically Controlled Injector Having Flux Bridge And Flux Break - An injector for injecting a reagent includes an axially translatable valve member positioned within a housing. An electromagnet is positioned within the housing and includes a cylindrically-shaped coil of wire. The valve member moves between a seated position and an unseated position in response to energizing the electromagnet. A flux sleeve passes through the coil and includes two magnetic portions interconnected by a non-magnetic portion. Each of the magnetic portions is aligned with transverse planes defined by the ends of the cylindrical coil. The non-magnetic portion is axially positioned between the transverse planes. | 12-22-2011 |
20110315795 | Fuel Injector - A fuel injector that includes a flying armature movable relative to a pintle stop, and an electromagnetic circuit configured to move the flying armature away from the pintle stop prior to accelerating the armature toward the pintle stop as part of moving the pintle to open the fuel injector. The flying armature increases the total force applied to the pintle to open the fuel injector by supplementing the static force imparted to the armature by a magnetic field with an impact force imparted by the armature being in motion toward and impacting with the pintle stop. The arrangement of magnetic circuit devices and materials used to make the magnetic circuit devices cooperate to provide a reversing force that urges the armature away from before urging the armature toward the pintle stop, and increases the rate at which the force that urges the armature toward the pintle stop increases. | 12-29-2011 |
20120067981 | Precision Ground Armature Assembly For Solenoid Actuator And Fuel Injector Using Same - A solenoid actuator includes a hard guide piece and a soft flux piece. The hard guide piece has a stop surface ground to create a final air gap distance between the soft flux piece and a stator assembly when the stop surface on the guide piece is in contact with the stator assembly. The final air gap is set by grinding the stop surface on the guide piece so that the distance between the stop surface on the guide piece and a top surface on the soft flux piece along an axis of the guide bore is equal to the final air gap. The step of grinding the armature assembly may be done after attaching the guide piece and the flux piece together. In an exemplary embodiment, the step of grinding the stop surface and associated guide surface(s) are performed in a single chucking. | 03-22-2012 |
20120074245 | Device for injecting fuel - A device is described for injecting fuel, which includes a valve body, an outwardly opening valve needle, which is disposed in the valve body in a pressure chamber filled with fuel, to which pressurized fuel is supplied; a restoring element, which returns the valve needle to an original position; an electromagnetic actuator, which is disposed in an actuator chamber for actuating the valve needle; and a diaphragm, which is disposed in the actuator chamber and subdivides the actuator chamber into a first, fuel-filled region and a second, fuel-free region in fluid-tight manner, and which subdivides the valve needle into an injection-side portion and an actuator-side portion, the injection-side portion of the valve needle including a pressure-compensation plunger, which separates the pressure chamber from the first, fuel-filled region of the actuator chamber, the actuator being disposed in the second, fuel-free region. | 03-29-2012 |
20120091233 | ACTUATOR ARRANGEMENT - An actuator arrangement for an electromagnetically operated fuel injector, includes a generally cylindrical actuator core having a longitudinal axis and defining an inner pole face of the actuator arrangement. The actuator core is formed of a bespoke magnetic material. A wire coil is disposed around the actuator core arranged to be connected to a power source to generate a magnetic field around the coil. A pole member is formed of a high strength material and defines an aperture for receiving the actuator core. The pole member defines an outer pole face of the actuator arrangement substantially co-planar with the inner pole face. An armature is movable in a direction parallel to the longitudinal axis in response to the magnetic field. The magnetic field passes into the armature in the region of the inner pole face and into the armature in the region of the outer pole face. | 04-19-2012 |
20120153054 | MICRO-EJECTING APPARATUS - There is provided a micro-ejecting apparatus. The micro-ejecting apparatus includes: an ejector including a channel therein and a driving part for ejecting a fluid to the outside; a body including a plurality of mounting parts on which the ejector is mounted; and guiding members fixed on the body and corresponding to the plurality of mounting parts so as to determine the positions of the plurality of mounting parts in the body. | 06-21-2012 |
20120160938 | ELECTROMAGNETIC FUEL INJECTION VALVE - In an electromagnetic fuel injection valve, a valve body guide hole ( | 06-28-2012 |
20120181358 | COIL CONTACT - The invention relates to a magnetic assembly ( | 07-19-2012 |
20120261499 | SOLENOID ACTUATOR - A short travel solenoid actuator ( | 10-18-2012 |
20120325938 | FUEL INJECTION VALVE - At the downstream-side face of an injection hole plate, a plurality of concaves are arranged corresponding to a plurality of injection holes; at least part of an injection hole outlet opens at the plain of the concave; the rest of the outlet opens at the downstream side face of the injection hole plate or contacts the inner surface of the concave. In a flow path formed by the injection hole, there is provided a cylindrical portion, whose cross section is the radially minimum cross section of the injection hole, from the upstream side face of the injection hole plate to the plain of the concave. Where D | 12-27-2012 |
20130001327 | HIGH-PRESSURE FUEL INJECTION VALVE FOR AN INTERNAL COMBUSTION ENGINE - A high-pressure fuel injection valve may include a control valve having an actuator, a high-pressure fuel connection and a low-pressure fuel connection. A control plunger and nozzle needle are aligned longitudinally in the valve stem and the valve tip. Together with the control plunger, the receiving chamber of the control plunger forms a closing control chamber delimited by the upper control plunger surface, and an opening control chamber delimited by the lower control plunger surface. Each control chamber is hydraulically connected via a feed throttle to the high-pressure fuel connection and via a return throttle to the low-pressure fuel connection. The control valve opens and closes the fuel return between the return throttles and the low-pressure fuel connection depending on the operation. The flow values of the feed throttles and of the return throttles are selected such that the high-pressure fuel injection valve opens and closes based on actuation of the control valve. | 01-03-2013 |
20130020415 | ACTUATOR ARRANGEMENT FOR USE IN A FUEL INJECTOR - The present invention relates to an actuator arrangement for use in a fuel injector, comprising: a piezoelectric actuator having a body section, said body section having a first end piece and a second end piece; a rigid encapsulation member which encloses the body section and the end pieces, wherein potting material is fitted between the rigid encapsulation member and the body section, wherein the first end piece is slideably fitted into the rigid encapsulation and the second end piece is fixed to or integrated into the encapsulation member. | 01-24-2013 |
20130037633 | Solenoid armature - A solenoid armature for a solenoid actuator, including at least one magnetic region and at least one non-magnetic region, the solenoid armature being configured as a one-piece component having a first and second armature end face, the magnetic and non-magnetic regions being integrally bonded to each other by a two-component powder injection molding technique, and the magnetic region and the non-magnetic region extending in the axial direction at least as far as the first armature end face. | 02-14-2013 |
20130056563 | INJECTOR FOR A FLUID - An injector for a fluid, particularly for fuel, is provided having a valve housing, a fluid intake, a valve chamber having a spray-discharge orifice, a piezoelectric or magnetostrictive actuator situated in the valve housing and a fluid-guiding pipe connecting a fluid intake and a valve chamber, which is situated in the valve housing running along the actuator. In order to create structural space in the valve housing for guiding through the fluid-guiding pipe which has a sufficiently large diameter for reducing pressure drops in the intake region, a hollow cylinder surrounding the actuator and developed as a prestressed spring is provided with a cylinder wall opening that extends axially through the entire length, and the positioning of the fluid-guiding pipe in the valve housing is undertaken so that it extends radially into the cylinder wall opening. | 03-07-2013 |
20130062442 | HIGH FLOW OUTWARD OPENING GASEOUS INJECTOR FOR AUTOMOTIVE APPLICATIONS - An injector ( | 03-14-2013 |
20130082126 | PRESSURE BALANCED GASEOUS FUEL INJECTOR AND METHOD FOR MAKING THE SAME - A fuel injector is provided for supplying fuel to a fuel consuming device. The fuel injector includes a fuel injector fuel inlet for receiving fuel, a fuel injector fuel outlet for dispensing fuel from the fuel injector, an upper valve seat, and a lower valve seat. An armature selectively seats and unseats with the upper valve seat and the lower valve seat. A balancing chamber is in constant fluid communication with the fuel injector fuel inlet and disposed between the upper valve seat and the lower valve seat. Fuel within the balancing chamber acts on the armature to urge the armature away from the upper valve seat and fuel within the balancing chamber acts on the armature to urge the armature toward the lower valve seat, thereby reducing the force to unseat the armature from the upper valve seat and the lower valve seat. | 04-04-2013 |
20130087639 | Electromagnetic Fuel Injection Valve - An electromagnetic fuel injection valve includes: a valve element which closes a fuel passage by coming into contact with a valve seat and opens the fuel passage by going away from the valve seat; an electromagnet which includes a coil and a magnetic core formed as a drive portion for driving the valve element; a movable element which is held by the valve element in a state where the movable element is displaceable in the direction of a drive force of the valve element relative to the valve element; a first biasing portion for biasing the valve element in the direction opposite to the direction of a drive force generated by the drive portion; a second biasing portion for biasing the movable element in the direction of the drive force with a biasing force smaller than the biasing force generated by the first biasing portion; and a restricting portion for restricting the displacement of the movable element in the direction of the drive force relative to the valve element. | 04-11-2013 |
20130181070 | Valve Assembly for an Injection Valve and Injection Valve - A valve assembly for an injection valve includes a valve body including a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle axially movable in the cavity, the valve needle preventing a fluid flow through the fluid outlet portion in a closing position and releasing the fluid flow through the fluid outlet portion in a further position, an upper retainer arranged in the cavity and fixed to the valve needle, and an electro-magnetic actuator unit configured to actuate the valve needle, the electro-magnetic actuator unit comprising an armature, arranged in the cavity and axially movable relative to the valve needle, the armature configured to be coupled to the upper retainer when the valve needle is actuated to leave the closing position, and a permanent magnet arranged in the cavity adjacent the position of the armature when the valve needle is in its closing position. | 07-18-2013 |
20130206871 | GASEOUS-FUEL-INJECTOR DEVICE FOR INTERNAL-COMBUSTION ENGINES - In a gaseous-fuel-injector device for internal-combustion motor-vehicle engines, the valve body of the injector device has one or more auxiliary openings giving out onto an internal surface of the valve body in which the valve member of the injector device is slidably mounted. Said auxiliary openings are arranged in such a way as to enable the inflow of the gaseous fuel coming from the supply, not only into the inlet opening of the injector device, but also into the internal area of the valve body in which the valve member is slidably mounted, so as to obtain an effect of ventilation and flushing, by means of the flow of gaseous fuel, in an area where there tend to form deposits of the oily substances contained in the gaseous fuel. | 08-15-2013 |
20130240642 | MAGNETIC ACTUATOR, VALVE AS WELL AS USE OF A MATERIAL IN MAGNETIC ACTUATORS - A magnetic actuator includes: a coil, an internal pole, an armature, and a magnetic return path system having a magnetic return path element made from a material having a two-phase structure. | 09-19-2013 |
20130248623 | Piezoelectric Component with Contact - A piezoelectric component, e.g., for use as an actuator of a fuel injection valve in a motor vehicle, may include a stack-shaped actuator body including a plurality of piezoelectric elements and inner electrode layers arranged in an alternating manner in a stacking direction, each inner electrode layer being connected alternately to one of two metalizations on an outer face of the stack in an electrically conductive manner. Each metalization is connected to an electrically conductive electrode structure via an electrically conductive contacting element (e.g., adhesive or solder). The stack-shaped actuator body has at least one predetermined breaking point, and the metalizations and/or the contacting elements have a recess in the region of the at least one predetermined breaking point. | 09-26-2013 |
20130270370 | FUEL INJECTION APPARATUS - A resin-bonded body of a fuel injection apparatus includes a first resin material and a second resin material, which are bonded together and have different properties, respectively. The resin-bonded body has a fuel seal portion to limit leakage of fuel from a boundary surface between the first resin material and the second resin material to an outside. The fuel seal portion is formed in a portion of the boundary surface and is surface-modified to increase hydrophilicity of the fuel seal portion. | 10-17-2013 |
20130277460 | Valve Assembly for an Injection Valve and Injection Valve - A valve assembly includes a valve body having a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle axially movable in the cavity to control a fluid flow through the fluid outlet portion, a guide coupled to the valve needle, an electro-magnetic actuator unit configured to actuate the valve needle and comprising an armature axially moveable in the cavity relative to the valve needle, the armature configured to be coupled to the guide when the valve needle leaves the closing position and configured to mechanically decouple from the guide due to its inertia when the valve needle reaches the closing position, and an armature spring coupled to the armature to provide a force to the armature contributing coupling the armature with the valve needle. A block-shaped stop element axially adjacent the armature and coupled to the valve body limits the axial movement of the armature. | 10-24-2013 |
20130292498 | Reagent Injector - An injector for injecting a reagent into an exhaust stream includes an outer tube extending through an electromagnet and surrounding an inner tube. A first end of the inner tube is sealingly fixed to an inner surface of the outer tube. A guide member and an orifice plate are each sealingly fixed to the inner surface of the outer tube. A second end of the inner tube is aligned by the guide member. A moveable valve member includes a pintle head guided by the inner surface of the outer tube to align the valve member with an orifice extending through the orifice plate. | 11-07-2013 |
20130299610 | GAS FUEL INJECTION VALVE - A gas fuel injection valve is provided in which a circular recess is formed in a front end face of a valve plunger, the circular recess being surrounded by an annular land part, which is an outer peripheral part of the front end face, an inner peripheral face of the circular recess is formed in a tapered shape so as to increase in diameter in going from a base of the circular recess toward the annular land part, an annular lip is formed on a seating member, the annular lip being joined from the inner peripheral face through to the annular land part and being seated on a valve seat, and the annular lip is disposed so that an annular ridge line of an apex of the annular lip is positioned, in a projection in the axial direction of the valve plunger, above the inner peripheral face. | 11-14-2013 |
20130306762 | FUEL INJECTION VALVE - A fuel injector for fuel-injection systems of internal combustion engines includes an electromagnetic actuating element having a solenoid coil, a fixed core, an outer magnetic circuit component, and a movable armature for actuating a valve-closure element, which cooperates with a valve-seat surface provided on a valve-seat element. The injector is characterized by its extremely small outer dimensions. The flexibility in the installation of fuel injectors of varying valve lengths, which is made possible very simply due to the special modular design, is significantly increased in this manner. An optimized dimensioning of the electromagnetic circuit allows for a DFR (dynamic flow range) greater than 17, the DFR being defined as the quotient of q | 11-21-2013 |
20140001290 | FUEL INJECTION VALVE OF DIRECT INJECTION ENGINE | 01-02-2014 |
20140008468 | FUEL INJECTOR - A fuel injector for fuel injection systems of internal combustion engines. The valve includes an electromagnetic actuating element which has a solenoid, a solid core, an external magnetic circuit component, and a movable armature for activating a valve closing member which cooperates with a valve seat surface provided on a valve seat member. The valve has extremely small outer dimensions. By optimizing the dimensions of the electromagnetic circuit, the outer diameter of the external magnetic circuit component in the peripheral area of the solenoid is 10.5 mm01-09-2014 | |
20140021274 | FUEL INJECTION VALVE - A fuel injection valve for an internal combustion engine is provided. The fuel injection value includes an injection hole plate having a plurality of fuel chambers formed by recessing part of the upstream side of the injection hole plate at a plurality of positions along the valve seat opening portion. Each of the fuel chambers has a shape in which the halves are symmetric with each other with respect to a line that radially extends from the center of the injection hole plate. The fuel chambers are is disposed in a place that ranges from the inside of a virtual circle to the outside of the inner circumference of the valve seat opening portion. Two injection holes are arranged outside the inner circumference of the valve seat opening portion in such a way as to flank the radial center line of the fuel chamber. | 01-23-2014 |
20140027545 | FUEL INJECTION VALVE - A fuel injection valve for fuel injection systems of internal combustion engines. The valve includes an electromagnetic actuating element having a solenoid, a solid core, an outer magnetic circuit component, and a movable armature for actuating a valve closing element that works together with a valve seat surface provided on a valve seat element. The valve has extremely small outer dimensions. Due to an optimized dimensioning of the electromagnetic circuit, the outer diameter of the outer magnetic circuit component in the circumferential area of the solenoid D | 01-30-2014 |
20140048629 | SEALED ARMATURE BALL TUBE ASSEMBLY - An injector having a tube attached to an armature. The injector includes a solenoid portion and a valve portion controlled by the solenoid portion. The armature includes a small diameter portion. Also included is a tube having a cavity, a first end of the tube is connected to the small diameter portion, and a ball is connected to a second end of the tube, such that the ball is selectively in contact with a valve seat. A hermetic weld connects the ball to the second end, and at least one heat affected zone is located in proximity to the hermetic weld. A coating substantially surrounds the heat affected zone and at least a portion of the ball, such that the coating prevents the heat affected zone from being exposed to diesel exhaust fluid and thus subsequent corrosion. | 02-20-2014 |
20140070031 | REAGENT INJECTOR WITH CRIMPED PINTLE - An injector for injecting a reagent includes an electromagnet and an axially translatable valve member positioned within a housing. The valve member is moveable from a seated position to an unseated position in response to energizing the electromagnet. The valve member includes a hollow tube including a curled end having a reduced diameter sized to allow a ball to partially extend beyond the tube end but not pass through the tube. The tube includes an inwardly extending detent restricting the ball from movement within the tube. A pintle head is fixed to the tube and positioned proximate the electromagnet. | 03-13-2014 |
20140110508 | Solenoid Actuator - A solenoid actuator is described. The solenoid actuator comprises an armature, pole piece(s), electromagnet coil(s) arranged, in response to energisation, to cause travel of the armature between first and second positions along a direction of travel, permanent magnet(s) positioned and orientated for latching the armature in at least the first position when the armature is in the first position and spring(s) arranged to bias the armature. The solenoid actuator can be operated to provide partial lift. | 04-24-2014 |
20140124601 | FUEL INJECTION CONTROLLER AND FUEL-INJECTION-CONTROL SYSTEM - A fuel injection controller includes a current-increase control portion applying a voltage to the coil so that the coil current is increased to a first target value, and a current-hold control portion applying the voltage to the coil so that the increased coil current is held at the first target value. A maximum electromagnetic attracting force to start a valve opening is referred to as a required valve-opening force. A saturated electromagnetic attracting force by the coil current of the first target value is referred to as a static attracting force. The first target value is established in such a manner that the static attracting force is greater than the required valve opening force. | 05-08-2014 |
20140124602 | FUEL INJECTION DEVICE - A fuel injection device includes a fuel injector and a control portion. The fuel injector is inserted into an attachment hole which is placed at a predetermined position of a cylinder head. The fuel injector has a housing in which a coil is provided. At least a part of the housing which accumulates the coil is surrounded over the whole circumference by an inner circumference surface of the attachment hole. The control portion has an increasing control portion and a holding control portion. The increasing control portion increases a current flowing through the coil to a first target value. The holding control portion holds the current to the first target value. | 05-08-2014 |
20140158797 | FUEL INJECTOR EQUIPPED WITH A METERING SERVOVALVE FOR AN INTERNAL COMBUSTION ENGINE - A fuel injector has an injector body and a control rod, which is movable in the injector body along an axis to control the opening/closing of a nozzle that injects fuel into a cylinder of the engine; the injector body houses a metering servovalve having a control chamber, which is axially delimited by the control rod and communicates with an inlet and with a discharge channel; the metering servovalve is provided with a shutter, which slides axially on an axial guide, from which the discharge channel exits, to open and close the discharge channel and, in consequence, vary the pressure in the control chamber; the discharge channel has three restrictions having calibrated passage sections and arranged in series with each other to divide the pressure drop along the discharge channel. | 06-12-2014 |
20140175194 | FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE - A stationary core includes a holding hole that receives and holds a portion of the magnetic spring, which is located on a valve opening side. A solenoid device includes a magnetic yoke that extends in an axial direction and has an axial extent, which overlaps with an entire axial extent of the holding hole. The magnetic yoke has a predetermined portion, which reduces an amount of the magnetic flux that passes through the magnetic yoke in a radial direction in comparison to the rest of the magnetic yoke. | 06-26-2014 |
20140197251 | FUEL INJECTOR AND FUEL INJECTION DEVICE USING THE SAME - A fuel injector includes a valve body moved together with a movable core and opening an injection port, and an elastic-force applying portion being elastically deformable according to a movement of the valve body to apply an elastic force to the valve body in a valve-closing direction. An elastic coefficient of the elastic-force applying portion is set to meet a condition that Ffc−Ffo≦L×K. In this case, a fuel-pressure valve-closing force of when the valve body is closed is referred to as Ffc, and the fuel-pressure valve-closing force of when the valve body is completely opened is referred to as Ffo. A movement distance of the valve body from a time point that the valve body is closed to a time point that the valve body is completely opened is referred to as L. The elastic coefficient is referred to as K. | 07-17-2014 |
20140203112 | FUEL INJECTOR - A common rail fuel injector includes a control valve member unattached to, but trapped between, a push pin and a seat of an injector body. The push pin has a head that includes a contact surface and a crown that includes a stop surface. An air gap surface of an armature is located between a top of the head and the stop surface of the crown when the contact surface of the push pin is in contact with the armature. The stop surface of the crown is located between an air gap plane of a stator assembly and the air gap surface of the armature. The push pin, the armature and the control valve member are movable among a rest configuration, an injection configuration, and an over travel configuration. | 07-24-2014 |
20140339342 | INJECTOR FOR A SYSTEM FOR FEEDING GAS FUEL TO AN INTERNAL COMBUSTION ENGINE - An injector for a system for feeding gas fuel to an internal combustion engine has an inlet mouth for the fuel into the injector, houses therein a shutter which is moveable between a closed position and an open position of an outlet mouth of the fuel from the injector, and is defined by an inlet body provided with the inlet mouth and a first actuating device to displace the shutter in an open position thereof and at least two interchangeable outlet modules, each of which is adapted to be releasably fixed to the inlet module, and is provided with a relative outlet mouth, a relative shutter, and a relative second actuating device to displace the shutter in a closed position thereof. | 11-20-2014 |
20140374512 | ELECTROMAGNETIC FUEL INJECTION VALVE - An electromagnetic fuel injection valve includes a coil assembly fitted around an outer periphery of a fixed core, a coil housing forming a magnetic path between a valve housing and the fixed core while surrounding the coil assembly, and a synthetic resin covering layer molded so as to cover the coil housing, wherein a yoke supporting a front end of the coil assembly is formed on an outer periphery of the valve housing, the coil housing is formed from a body portion surrounding the coil assembly while being magnetically connected to the yoke and an end wall portion formed integrally with the body portion and fitted around an outer periphery of the fixed core, and a shoulder portion is formed on the outer periphery of the fixed core, the shoulder portion receiving the end wall portion and restricting the position of the coil housing in an axial direction. | 12-25-2014 |
20150014449 | Pressure Compensated Fuel Injector - A method of operating a pressure compensated fuel injector includes: filling a fuel chamber with a charge of fuel by closing an injector valve and circulating a fuel from a fuel source through a plurality of recirculating valves and a cap valve; then isolating the fuel chamber and the charge of fuel from the fuel source; then equalizing a pressure within the fuel chamber to a rising pressure outside the fuel chamber by reducing a volume of the isolated fuel chamber; and then activating a solenoid that is coupled to the injector valve, opening the injector valve; and then further reducing the volume of the isolated fuel chamber to apply an over pressure within the chamber, pumping fuel from the fuel chamber through the injection orifice. | 01-15-2015 |
20150041567 | FUEL INJECTOR - A fuel injector for an internal combustion engine includes: an electromagnetic actuating element having a solenoid coil, a core and a valve casing as the outer solenoid circuit component, and a movable valve-closure body, which cooperates with a valve-seat surface assigned to a valve-seat body. The core and a connection pipe are fixedly connected in an inner opening of a thin-walled valve sleeve and the valve casing at the outer circumference of the valve sleeve is fixedly connected to the valve sleeve by being pressed in/on. | 02-12-2015 |
20150060575 | VALVE ACTUATOR ASSEMBLY WITH CURRENT TRIM AND FUEL INJECTOR USING SAME - A valve actuator assembly includes a valve member movable between a first seat and a second seat. A spring member biases the valve member toward the first seat, and an actuator is positioned to move the valve member toward the second seat against the bias of the spring member when the actuator is energized. A controller is in control communication with the actuator and is configured to provide a first current to the actuator for an energizing period, identify a lack of return contact between the valve member and the first seat during a post-energizing period, and provide a second current to the actuator that is higher than the first current in response to the lack of return contact. | 03-05-2015 |
20150069152 | ELECTROMAGNETIC FUEL INJECTION VALVE - An object of the present invention is to prevent a short circuit and disconnection between coil wires | 03-12-2015 |
20150136878 | DEVICE FOR INJECTING FUEL - A device for injecting fuel includes an electrodynamic drive having a movably situated coil, an inwardly opening needle which opens and closes injection holes on a valve seat, a connecting element which connects the needle to the movably situated coil, and a pressure chamber which is situated at the needle upstream from the valve seat and contains pressurized fuel. | 05-21-2015 |
20150330343 | FUEL INJECTOR HAVING A MAGNETOSTRICTIVE ACTUATOR DEVICE - The present disclosure provides a fuel injector including a magnetostrictive actuator that is capable of precise control of a needle or nozzle valve element. The magnetostrictive actuator is direct-acting on the nozzle valve element, which extends into the magnetostrictive actuator, providing a compact fuel injector configuration that may provide rate-shaping of a fuel injection event. | 11-19-2015 |
20150345442 | FUEL INJECTOR INCLUDING AN INJECTION CONTROL VALVE HAVING AN IMPROVED STATOR CORE - A fuel injector includes an injection control valve having a stator core that is electrically isolated from surrounding parts such as a stator housing. The stator core includes a first annulated wall having an inner surface, a second annulated wall having an outer surface, a radially extending wall connecting the first and second annulated wall, and a radially extending slot extending through the first annulated wall, the radially extending wall, and the second annulated wall. The stator core may include a limited number of contact points with the stator housing. Alternatively or additionally, an electrically insulating material may be placed between the stator core and the stator housing. | 12-03-2015 |
20150354515 | Fuel Injection Device - A fuel injection valve having a variable stroke mechanism is constructed. A valve body provided to be slidable; a first movable element for cooperating with the valve body; an inner fixed iron core provided at a position to oppose a second movable element; an outer fixed iron core; and a coil are included. A lift amount of the second movable element is set larger than a lift amount of the first movable element, and a portion of the second movable element is projected into the first movable element. In this way, large and small lifts are constituted by using a difference between magnetic attractive forces that are generated in the first movable element and the second movable element by a current supplied to the coil. | 12-10-2015 |
20160017853 | Valve Body and Fluid Injector - A valve body for a fluid injector includes a central longitudinal axis and a one-piece base body. The base body has a side wall defining a recess extending from a fluid inlet side to a fluid outlet side of the base body. The side wall has a thin portion having a decreased wall thickness relative to further portions of the side wall that adjoin the thin portion along the longitudinal direction towards the fluid inlet side and the fluid outlet side. The valve body includes a metallic reinforcement jacket that is rigidly coupled to the base body and which axially overlaps the thin portion having the decreased wall thickness. | 01-21-2016 |
20160017855 | VALVE FOR CONTROLLING A FLUID WITH INCREASED SEALING ACTION - A valve for controlling a fluid, e.g., fuel, has a closing element and a valve seat. The valve seat has a sealing region and a valve seat region adjoining the sealing region. The closing element seals on the sealing region, the sealing region and the valve seat region merging with one another directly and without a step. A hardness of the sealing region is less than a hardness of the closing element. | 01-21-2016 |
20160025052 | Electromagnetic Fuel Injector - In an electromagnetic fuel injection which is structured such that both end surfaces of an inner circumferential iron core portion and an outer circumferential iron core portion face a movable iron core, and a non-magnetic portion made of a metal material is provided between both end surfaces, an object of the present invention is to realize a structure of the electromagnetic fuel injector in which a surface of a target object is unlikely to be affected by a heat treatment with the surface facing the movable iron core. In an electromagnetic fuel injector | 01-28-2016 |
20160053730 | CONFIGURABLE OUTPUT DRIVER ASIC - A fuel system includes an electronic control module (ECM), at least one injector coupled to the ECM, and a configurable output driver circuit coupled to the at least one injector. The configurable output driver circuit includes a channel that enables adaptation of ECM outputs. The configurable output driver circuit is configurable based on a value stored in a register circuit. | 02-25-2016 |
20160097358 | Fuel Injection Valve - To improve the accuracy of an injection amount by a fuel injection valve, the open/close operation of a valve body needs to be performed promptly. This requires a configuration in which, immediately after starting movement of a movable member, fluid force generated at a seat portion of the valve body is not transmitted. It is also required to suppress a cohesion phenomenon between an end surface of an anchor and an end surface of a fixed core and to prevent sticking. To solve this problem, an electromagnetic fuel injection valve has a configuration in which a valve body includes a second valve body configured to abut against an anchor at valve close, a first valve body that abuts against the anchor at valve open. The second valve abuts against a stroke stopper arranged on an inner periphery of a fixed core at a time of valve-open. | 04-07-2016 |
20160102640 | FUEL INJECTION VALVE FOR AN INTERNAL COMBUSTION ENGINE - A fuel injection valve includes a housing with a cavity, a valve needle, an actuator including a magnetic coil arranged in a coil casing, and an armature in the cavity. The housing includes a separation ring positioned between the armature and the coil casing and configured to lead the electromagnetic flux to the armature. The separation ring includes a first part and a second part. The first part is made of a first material and the second part is made of second material that differs from the first material. The first material and the second material are magnetic materials. | 04-14-2016 |
20160123289 | Pressure Control Valve for a Fuel Injection System - A pressure control valve for a fuel injection system, in particular a common-rail injection system, for controlling pressure in a high-pressure fuel reservoir, includes a magnetic actuator configured to actuate a spherical valve closing element. The magnetic actuator interacts with a reciprocatingly displaceable armature that is connected to an armature pin in order to transmit a force of the magnetic actuator to the spherical valve closing element. At least one of the spherical valve closing element and the armature pin is axially displaceably guided in a valve piece which forms a valve seat configured to interact with the spherical valve closing element. | 05-05-2016 |
20160169403 | COIL ASSEMBLY AND FLUID INJECTION VALVE | 06-16-2016 |