Abstract: A system for flowing fuel vapor through a canister purge valve includes a valve body having a wall that defines a passage between a first port and a second port. The first port may be adapted for fuel vapor communication with a fuel vapor collection canister, and the second port may be adapted for fuel vapor communication with an intake manifold of an internal combustion engine. The system includes an elastomeric member having a first end, a second end, and an active zone between the first end and the second end. The active zone forms a flow entry portion, a sealing portion, and a flow exit portion. The elastomeric member is deformable between a first configuration that prohibits flow over the sealing portion, and a second configuration that permits flow over the sealing portion. The system includes a stator proximate the passage, an electromagnetic coil surrounding the passage, and an armature coupled to the elastomeric member.

Abstract: The invention is directed to a dose control apparatus. The apparatus has two armatures pressed against a valve seat by at least one spring. A coil induces a magnetic field that motivates the armatures against the force of the spring, thereby opening the valve. The armatures may move along a common axis in opposite directions. The apparatus may also include a core located between the armatures and a casing about the coil. The core and casing act to guide the magnetic field, reducing the power requirements for creating the field. Current may be periodically reversed in the coil to provide a degaussing field. In addition, a signal may be produced by the coil in the presence an externally applied magnetic field such as an MRI. An opposing magnetic field may be produced by the coil or the current provided to the coil may be adjusted.

Abstract: A solenoid improvement has been achieved in terms of abrasion resistance. A fluid accumulating chamber Q is formed substantially coaxially with a plunger chamber P and on the opposite side of a center post 4 through the intermediation of the plunger chamber P. On the outer peripheral side of the rod 6, there is provided a first bearing 7 for separating the plunger chamber P and the fluid accumulating chamber Q from each other.

Abstract: A method for producing fuel rails, which contain a hollow chamber that communicates with a fuel source via a connection. The fuel rail supplies fuel to a number of injection valves. At least one preassembled unit of an injection valve is integrated into the fuel rail by means of a materially adhesive connection during the production of the fuel rail and an electrical contacting of the individual injection valves is produced at the same time.

Abstract: In a capillary valve, which can be pulsed and which includes a capillary with a constriction forming a nozzle, a plunger is movably disposed in the capillary and forms, together with the capillary constriction, a seal, and a drive is provided for actuating the plunger within the capillary providing for a small, rapidly responsive, nozzle valve design.

Abstract: A valve for controlling fluid flow having a chamber of non magnetizable material having an inlet opening and at least one outlet opening, a magnetizable armature having a valve closure member, an electromagnetic drive for moving the closure member from one end to the other of a path defined by the chamber. A seating is provided at each end of the path within the chamber, each seating being complementary to the external surface of the closure member, so that the closure member is a snug fit in each seating. A permanent magnet and pole pieces create two opposite, spaced apart powerful magnetic fields in each of which the flux extends across the chamber perpendicular to the direction of movement of the closure member, and a solenoid surrounds the chamber, which when energized creates a second magnetic field, in which the flux is parallel to that of the permanent fields.

Abstract: A fuel injector for use with an internal combustion engine. The fuel injector comprises a valve group subassembly and a coil group subassembly. The valve group subassembly includes a tube assembly having a longitudinal axis that extends between a first end and a second end; a seat that is secured at the second end of the tube assembly and that defines an opening; an armature assembly that is disposed within the tube assembly; a member that biases the armature assembly toward the seat; an adjusting tube that is disposed in the tube assembly and that engages the member for adjusting a biasing force of the member; a filter that is disposed within the tube; and a first attachment portion. The coil group subassembly includes a solenoid coil that is operable to displace the armature assembly with respect to the seat; and a second attachment portion that is fixedly connected to the first attachment portion.

Abstract: In a fuel injection valve, an adjustment pipe made of stainless steel and for adjusting a compression amount of a spring biasing a valve member is press-fitted into a cylindrical housing made of stainless steel, and a fuel injection amount is adjusted by adjusting a spring force of the spring in accordance with a press-fitted amount of the adjustment pipe. The adjustment pipe is immersed in an oxalic acid solution so that an oxalate film is formed thereon before being press-fitted into the cylindrical housing. Therefore, the oxalate film prevents a direct press-contact between an outer peripheral surface of the adjustment pipe and an inner peripheral surface of the cylindrical housing.

Abstract: An electromagnetic fuel injector of an internal combustion engine having a plurality of electromagnetic coils for valve driving wound separately on a bobbin in an axial direction. The bobbin has a step difference of the outer diameter so that the bobbin outer diameter in the region with the second coil to be wound thereon is smaller then the bobbin outer diameter in the region with the first coil to be wound thereon, and the bobbin inner diameter has a step difference in that the bobbin inner diameter in the region with the first coil to be wound thereon is made large partially so as to secure an annular space to interpose a seal ring therein.

Abstract: A system for flowing fuel vapor through a canister purge valve includes a valve body having a wall that defines a passage between a first port and a second port. The first port may be adapted for fuel vapor communication with a fuel vapor collection canister, and the second port may be adapted for fuel vapor communication with an intake manifold of an internal combustion engine. The system includes an elastomeric member having a first end, a second end, and an active zone between the first end and the second end. The active zone forms a flow entry portion, a sealing portion, and a flow exit portion. The elastomeric member is deformable between a first configuration that prohibits flow over the sealing portion, and a second configuration that permits flow over the sealing portion. The system includes a stator proximate the passage, an electromagnetic coil surrounding the passage, and an armature coupled to the elastomeric member.

Abstract: A purge valve is in fluid communication between a fuel vapor collection canister and an intake manifold of an internal combustion engine. The purge valve includes a body, a seat, a head, and a solenoid. The body defines a fuel vapor flow path between a first port is in fluid communication with the fuel vapor collection canister, and a second port is in fluid communication with the intake manifold. The seat defines an aperture through which the fluid flow passes in an open configuration of the purge valve. The head includes a permanent magnet, and is attracted to the seat and occludes the aperture in a closed configuration of the purge valve. The solenoid repels the head toward the open configuration when the solenoid is energized, and the head occludes the aperture due to the magnetic attraction with the seat when the solenoid is de-energized.

Abstract: A canister purge valve for regulating fuel vapor flow between a fuel vapor collection canister and an intake manifold of an internal combustion engine. The canister purge valve includes a body having a wall defining a passage extending between a first port and a second port. The first port is adapted for fuel vapor communication with the fuel vapor collection canister. The second port is adapted for fuel vapor communication with the intake manifold of the internal combustion engine. An elastomeric actuator is at least partially disposed in the passage, and includes a first end, a second end spaced from the first end along a central axis, and a sealing surface between the first end and the second end. The sealing surface has a first diameter at a first portion and a second diameter at a second portion, the second diameter being wider than the first diameter.

Abstract: A canister purge valve for regulating fuel vapor flow between a fuel vapor collection canister and an intake manifold of an internal combustion engine. The canister purge valve includes a body defining a passage extending between a first port and a second port. The first port is adapted for fuel vapor communication with the fuel vapor collection canister. The second port is adapted for fuel vapor communication with the intake manifold of the internal combustion engine. A seat is disposed in the passage. The seat defines an aperture having a sealing surface disposed about a central axis. An elastomeric actuator extends through the aperture, and is deformable between a first configuration that engages the sealing surface to prohibit fuel vapor flow through the aperture, and a second configuration spaced from the sealing surface to permit fuel vapor flow through the aperture.

Abstract: A solenoid valve for controlling an injection valve of an internal combustion engine is provided, including an electromagnet, a movable armature, a control valve member moved with the armature and cooperating with a valve seat for opening and closing a fuel discharge channel of a control pressure chamber of the injection valve, and a sliding piece guiding the armature, which is positioned together with the armature and the control valve member in an armature chamber. For reducing the bounce of the armature, the sliding piece subdivides the armature chamber into a pressure relief chamber connected to a fuel low-pressure connection and an hydraulic damping chamber, into which a fuel discharge channel opens.

Abstract: The filler spout comprises a tubular body having mounted therein a valve member and a magnetic actuator element connected to the valve member via a coupling member comprising two elements that are coupled to each other via a coupling that includes radial clearance.

Abstract: A load bearing valve body has an annular collector groove supplied by radial ports connected to an inlet in the end of the valve body. An annular sleeve type armature has a plurality of arcuate slots located thereon to axially valve the collector groove upon solenoid energization.

Abstract: A fuel injector, particularly a fuel injector for fuel injection systems in internal combustion engines, has a valve needle, which cooperates with a valve-seat surface to form a sealing seat, and an armature, which engages with the valve needle, the armature being movable along the axis of the valve needle and being damped by a damping element made from an elastomer. In this context, a first intermediate ring is situated between the armature and the damping element. The damping element rests on the flange, which is connected in a force-locking manner to the valve needle. The intermediate ring and/or the flange is furnished with radial and/or axial channels which connect an interior volume located between the valve needle and the damping element to a central cutaway of the fuel injector.

Abstract: In a fuel injection device, a metal inner tubular member has a step in an outer peripheral wall of the metal inner tubular member, and an axial end surface of an upstream end portion of a metal outer frame member axially abuts against the step of the metal inner tubular member.

Abstract: This invention is an armature and an armature driving device in which the armature is rotated around its axis so as to inhibit uneven wear from occurring between the armature and a housing. That is, an armature which is slidably provided within a housing filled with fluid and which divides the inside of the housing into two fluid chambers is further provided with a communicating hole that enables the fluid to pass between the two fluid chambers. This communicating hole is formed such that the fluid passing through the communicating hole and out from the armature when the armature slides flows out at an angle to, and to the side of, a center axis of the armature.

Abstract: An electromagnet having a hollow cylindrical coil former fitted with a coil winding and surrounded by a magnet housing. The coil former is bounded by upper and lower pole shoes. A nonmagnetic metal tube in the hollow cylinder of the magnet defines an armature space for a magnet armature that divides the armature space into first and second chambers, which are connected via a pressure equalizing channel in the magnet armature. A push rod passes through an axial hole in the lower pole shoe, to a control piston of a hydraulic valve, whose interior is connected via a further pressure equalizing channel in the lower pole shoe to the first chamber of the armature space. The push rod is a profiled rod contacting the magnet armature, the rod is of a cross-sectional shape different than that of the axial hole in the lower pole shoe and of a cross-sectional area less than that of the axial hole.

Abstract: To provide a small-sized and low-cost proportional solenoid valve which is capable of controlling a bidirectional fluid flow. A core is fixed in a pipe, and a hollow shaft having an extreme end thereof closed by a valve seat and a portion adjacent thereto formed with valve holes is fixed in the core. Within the pipe, there are arranged a hollow cylindrical valve element axially movable using the shaft as a guide and urged in a direction away from the core by a spring, for opening and closing the valve holes, and a plunger, while outside the pipe, there is arranged a solenoid coil. The proportional solenoid valve has a body formed by the pipe, and the component parts for opening and closing the valve are arranged within the pipe, so that it is possible to reduce the size of the proportional solenoid valve, the number of component parts, and machining costs and material costs, which contributes to reduction of costs of the valve.

Abstract: An electromagnetic dual-action control valve with a housing (2), with connections (15, 16, 17) for inflow and outflow lines for a pressure medium, with a solenoid (3) and with two armatures arranged to move within the solenoid (3) for opening and closing the line connections. To simplify the structure of such a dual-action control valve, it is provided that one of the armatures is formed as a hollow armature (4) with a closed end (11), within which an inner armature (5) is arranged to move coaxially, and the hollow armature (4) has openings (20, 21) for the pressure medium, of which one opening (21) can be closed by a sealing surface (13) of the inner armature (5).

Abstract: The present invention provides a high-performance mass flow controller which is compact and lightweight, which has a flow path having a simple structure and which does not have dead space in which a fluid is likely to stagnate and cause the problem of contamination. A cylindrical valve conduit having a hollow structure, a yoke and a sensor conduit are connected in tandem. A fluid inlet portion is connected to an end of the valve conduit and a fluid outlet portion is connected to an end of the sensor conduit. A solenoid valve is provided on a side of the fluid inlet portion and a thermal mass flowmeter is provided on a side of the fluid outlet portion. In the valve conduit, a cylindrical plunger providing a movable portion of the solenoid valve and a valve portion of which a degree of opening is adjusted by moving the plunger are provided on a side of the fluid inlet portion. A bypass for generating a laminar flow is disposed in the sensor conduit so as to effect one-way flow of a fluid.

Abstract: The solenoid valve comprises a duct having an inlet opening and an outlet opening through which the fluid can pass substantially without changing direction, a valve seat within the duct, a closure member movable between a closure position and a fully-open position, and electromagnetic means for acting on the closure member in order to move it to any position between the closure position and the open position in dependence on an electrical control quantity. The electromagnet means comprise a core of ferromagnetic material, fixed firmly to the closure member and movable substantially along the same axis as the fluid, and a solenoid for generating a force on the ferromagnetic core along the same axis. A second closure member, movable along the same axis, may be provided in order to provide a solenoid valve with a double seal. The solenoid valve described is less bulky and expensive than known solenoid valves because it does not require a metal housing body.

Abstract: A fuel injector (1), in particular a fuel injector (1) for fuel-injection systems of internal combustion engines, comprises a first magnetic coil (2) cooperating with a first armature (3), a second magnetic coil (4) cooperating with a second armature (5), and a valve needle (14) which is in force-locking connection with the first armature (3) via a first flange (12) and to the second armature (5) via a second flange (13), to actuate a valve-closure member. A restoring spring (17) acts upon the valve needle (14) in a closing direction of the fuel injector (1). A first positioning spring (15), situated between the first flange (12) and the first armature (3), acts upon the first armature (3) in the closing direction of the fuel injector (1), while a second positioning spring (16), situated between the second flange (13) and the second armature (5), acts upon the second armature (5) in an opening direction of the fuel injector (1).

Abstract: A method is described for manufacturing a magnet coil for a valve in which first a metal base element of the valve is made available, then an electrically insulating winding support is mounted on the outer wall of the base element, and lastly a winding of the magnet coil is introduced into the winding support. Such a configuration of a magnet coil is suitable particularly in fuel injection valves which are used in mixture-compressing, spark-ignited internal combustion engines, but also in all other solenoid valves.

Abstract: A fuel injector (1) for fuel-injection systems of internal combustion engines has a nozzle body (2) and a magnetic coil (3) positioned in a magnetic cup (6), the magnetic coil (3) being penetrated by the nozzle body (2); and a plastic coating (8) which at least partially surrounds the nozzle body (2). The nozzle body (2) and the magnetic cup (6) are sealed from an environment of the fuel injector (1) by a thread-type labyrinth seal (5).

Abstract: A valve assembly includes a valve with a bobbin/valve body, a solenoid and a plunger. The bobbin/valve body is formed in one piece, and defines all of the valve's inlet/outlet ports and forms the entire support structure for the solenoid and the plunger. The valve may be connected to a manifold by press-fitting port nipples of the valve into corresponding channels in the manifold. The manifold is formed of a resilient, elastomeric material, and the port nipples include radial projecting barbs, which enable the valve to be fluidly-connected to the manifold without additional O-ring seals or other mechanical sealing devices. Fittings with barbs can likewise be press-fit in other channels of the manifold to connect the valve assembly with fluid lines or other components in the fluid system. The fittings can also be provided unitary with the manifold, and/or adhesively attached to the manifold and/or to the fluid lines and other components.

Abstract: A fuel injector for fuel injection systems of internal combustion engines has an electromagnetic actuating element including a magnet coil, a tubular internal pole and an external magnetic circuit part, a valve sleeve having an internal opening and thin walls and a movable valve closing body which works together with a valve seat assigned to a valve seating body. The valve seating body and the internal pole are fixedly arranged in the internal opening in the valve sleeve . The internal pole has a longitudinal slot formed by producing it by rolling and/or bending.

Abstract: A dosing spout for mounting on a container has a liquid outlet valve which, at placing of the spout in an electric field, can be actuated by the field for opening of outflow of liquid directly from the container and out through the mouth of the spout, and an air inlet valve which can let air from the surroundings directly into the container as compensation for the quantity of liquid flowing out. The armature of the liquid outlet valve and the armature of the air inlet valve are arranged consecutively in their longitudinal direction of displacement.

Abstract: The present invention provides a solenoid actuated fuel injector. The fuel injector includes a housing having a fuel inlet, a fuel outlet, and a fuel passageway extending along a longitudinal axis. The fuel injector additionally includes a valve body having an inlet portion and an armature guide eyelet that is disposed in the inlet portion of the valve body within the fuel passageway. A closure assembly includes an upper bearing guide fixedly connected to a stem portion. The upper bearing guide includes a bearing portion and a contacting portion. The armature guide eyelet includes a first portion circumscribing the upper bearing guide portion, and a second portion engaging the upper bearing guide contacting portion. Methods of mechanically insuring a repeatable stroke of a closure assembly and operating a closure assembly within a solenoid actuated fuel injector are also provided.

Abstract: A valve structure that includes a housing, a valve, and an actuator. The housing includes a first portion, a second portion, and an intermediate portion. The first portion extends along a first axis from a first port, the second portion extends along a second axis from a second port, and the intermediate portion connects the first and second portions. The first and second portions partially define a fluid communication path between the first and second configurations. The valve is movable with respect to the housing between first and second configurations. The first configuration permits substantially unrestricted fluid flow between the first and second ports. The second configuration substantially prevents fluid flow between the first and second ports. The actuator displaces the valve from the first configuration to the second configuration. The actuator partially defines the fluid communication path between the first and second ports.

Abstract: The present invention provides a fuel injection valve including a stationary core and a movable core having one end opposed to one end of the stationary core, the movable core being movable toward the one end of the stationary core upon magnetization of the stationary core and a valve on the other end of the movable core and movable with the movable core, the valve being supported by a valve seat base and a cylindrical body extends from at least the stationary core to the base.

Abstract: A solenoid valve is provided which may be used to inject fuel into an internal combustion engine for automotive vehicles. The solenoid valve includes an armature and stator attracting the armature to open a fluid passage. The solenoid valve also includes a retaining nut and an end body. The retaining nut engages a housing to retain a hollow cylindrical stator casing in the housing. The end body is joined to the casing in alignment therewith to hold the stator within the casing without subjecting the stator to the pressure produced by the engagement of the retaining nut with the housing. This minimizes undesirable loads on the stator.

Abstract: The method according to the present invention for manufacturing a magnet coil for a valve is characterized in that first a metal base element (2) of the valve is made available, then an electrically insulating winding support (50) is mounted on the outer wall of the base element (2), and lastly a winding (4) of the magnet coil (1) is introduced into the winding support (50).

Abstract: A fuel pressure regulator is provided for producing more than one fuel pressure. The fuel pressure regulator includes a pressure plate that restricts fuel flow between an input line and an output line. A spring is provided for applying a force to the pressure plate. A coil and armature are also provided. The coil attracts the armature to a casing or head pole, thus applying more force to the pressure plate.

Abstract: This invention is an armature and an armature driving device in which the armature is rotated around its axis so as to inhibit uneven wear from occurring between the armature and a housing. That is, an armature which is slidably provided within a housing filled with fluid and which divides the inside of the housing into two fluid chambers is further provided with a communicating hole that enables the fluid to pass between the two fluid chambers. This communicating hole is formed such that the fluid passing through the communicating hole and out from the armature when the armature slides flows out at an angle to, and to the side of, a center axis of the armature.

Abstract: In a fuel injection valve in which an outer frame member is press fitted to a limited region of an outer circumference of an inner pipe member in a state that a drive coil is radially sandwiched therebetween, a valve lift amount is accurately adjusted by press fitting the attracting member to the inner pipe member without being adversely affected by a possible deformation of the inner circumference of the inner pipe member on press fitting the outer frame member to the inner pipe member due to a relief space provided in the inner circumference of the inner pipe member for preventing the outer circumference of the attracting member from contacting the inner circumference of the inner pipe member at least at a position just radially inside and axially corresponding to the limited region.

Abstract: To provide a small-sized and low-cost proportional solenoid valve which is capable of controlling a bidirectional fluid flow. A core is fixed in a pipe, and a hollow shaft having an extreme end thereof closed by a valve seat and a portion adjacent thereto formed with valve holes is fixed in the core. Within the pipe, there are arranged a hollow cylindrical valve element axially movable using the shaft as a guide and urged in a direction away from the core by a spring, for opening and closing the valve holes, and a plunger, while outside the pipe, there is arranged a solenoid coil. The proportional solenoid valve has a body formed by the pipe, and the component parts for opening and closing the valve are arranged within the pipe, so that it is possible to reduce the size of the proportional solenoid valve, the number of component parts, and machining costs and material costs, which contributes to reduction of costs of the valve.

Abstract: A fuel injector (1), especially a fuel injector for fuel injection systems in internal combustion engines, has a valve needle (3) whose valve-closure member (4) cooperates with a valve seat surface (6) to form a sealing seat, and has an armature (20) engaging with the valve needle (3), the armature (20) being arranged on the valve needle (2) in an axially movable manner and being damped by a damping element (32) including an elastomer. A ring space (37) is formed between damping element (32) and valve needle (3) which is filled with fuel, ring space (37) being in contact with a throttle gap (39).

Abstract: In a fuel injection valve, a cylindrical valve body has a valve seat protruding radially inward out of an inner wall thereof and a needle supporting cylindrical inner wall. A nozzle needle is fixed to the armature so as to move together with the armature, while being supported slidably by the needle supporting cylindrical inner wall. The nozzle needle is provided with a valve portion to be seated on the valve seat when a coil is de-energized and inside thereof with a cavity into which fuel is introduced. A fuel accumulation bore is provided between inner circumference of the cylindrical valve body and outer circumference of the nozzle needle. With the construction mentioned above, the nozzle needle is provided with an opening through which the cavity communicates with the fuel accumulation bore.

Abstract: A fuel injector (1), in particular for direct injection of fuel into the combustion chamber of an internal combustion engine having fuel mixture compression and spark ignition, includes an armature (20) which cooperates with a solenoid (10), and a valve needle (3) connected to the armature (20), on which valve needle a valve-closure member (4) is provided which together with a valve-seat surface (6) forms a sealing seat. The valve needle (3) passes through the armature (20) and an extension (15) formed on the armature (20) in such a way that a pin (32) may be inserted into a bore (34) in the extension (15) of the armature (20), whose alignment coincides axially and radially with a bore (35) in the valve needle (3), so that an axial pre-lift gap (30) is formed between the armature (20) and the valve needle (3).

Abstract: A fuel injector for use with an internal combustion engine. The fuel injector comprises a valve group subassembly and a coil group subassembly. The valve group subassembly includes a tube assembly having a longitudinal axis that extends between a first end and a second end; a seat that is secured at the second end of the tube assembly and that defines an opening; an armature assembly that is disposed within the tube assembly; a member that biases the armature assembly toward the seat; an adjusting tube that is disposed in the tube assembly and that engages the member for adjusting a biasing force of the member; a filter that is located at the first end of the tube assembly and that has an integral retaining portion; an O-ring that circumscribes the first end of the tube assembly and that is maintained by the retaining portion of the filter; and a first attachment portion.

Abstract: A load bearing solenoid operated valve having a one piece body with threads on opposite ends thereof for connection to a system placing the valve in tension or compression. An inlet port is formed in one end of the body and a plurality of cross ports are formed to communicate with the inlet. A sleeve valve/armature member which is magnetizable is slidably received over the body and has radial ports which are moved axially for valving the body cross ports. An annular flux collector ring and a pole piece are disposed on the body on opposite axial sides of the sleeve valve. A bobbin with coil thereon is received over the body and sleeve and a magnetically permeable cover over the coil completes the flux loop about the coil.

Abstract: A valve for the metered introduction of fuel, evaporated from the fuel tank of an internal combustion engine, into an intake conduit of the engine, having a valve closing member (27), which is disposed between a valve seat body (22) and a magnet core (15) of an electromagnet (13) and which has at least one through opening (28) and is urged in the valve closing direction by a restoring means (31) and is actuatable in the valve opening direction by the electromagnet (13), and having a damping element (60), disposed in the valve closing member (27), which protrudes axially through the valve closing member (27), is characterized in that facing at least one valve opening (25) disposed in the valve seat body (22) is a further opening (29), disposed in the valve closing member (27), which opening is embodied in essentially the same shape as the at least one valve opening (25) but larger than it and is covered, on its face end toward the valve seat body (22), by the damping element (60).

Abstract: Electromagnetic actuator for a fuel injector; the electromagnetic actuator is provided with an electromagnet, which has a fixed magnetic core which is delimited at the base by a first annular contact surface, and with an anchor, which is mechanically integral with a shutter, it can be displaced against the action of a spring towards the magnetic core by the effect of the force of magnetic attraction produced by the electromagnet, and is delimited at the top by a second annular contact surface, which is parallel to, and faces the first contact surface; between the two contact surfaces there is interposed an annular separation body, which is substantially flat, is made of non-magnetic material, and is integral with the magnetic core or with the anchor.

Abstract: A fuel injector having a reduced bounce armature is disclosed. The fuel injector includes an upstream end, a downstream end, and a valve seat located at the downstream end. The armature located between the upstream end and the downstream end and includes an upstream armature end; a downstream armature end; and a longitudinal channel extending therethrough. The longitudinal channel includes an upstream portion having a first cross-sectional area and a downstream portion having a second cross-sectional area, with the second cross-sectional area being smaller than the first cross-sectional area. The downstream portion includes at least one interior wall. The armature also includes a flow restrictor element inserted into the downstream portion of the longitudinal channel such that liquid flow from the downstream armature end to the upstream armature end is restricted. The fuel injector further includes a needle located in the longitudinal channel downstream of the transverse channel.

Abstract: A fuel injector valve for fuel injection systems of internal combustion engines has a magnetic coil, an armature to which the magnetic coil applies a force against a resetting spring in the lifting direction, and a valve needle connected to a valve closing member. The armature is able to move between a first stop connected to the valve needle and limiting the movement of the armature in the lifting direction and a second stop connected to the valve needle and limiting the movement of the armature against the lifting direction. The second stop is formed by a spring element.

Abstract: A valve, in particular for tank venting in motor vehicles, having a short-circuit yoke (40), having at least one valve opening (42) and having a spring-loaded valve member (50) which cooperates for opening and closing the at least one valve opening (42) and which, forming a magnet armature of an electromagnet (13), is disposed between the short-circuit yoke (40) of the electromagnet (13) and a magnet core (15) of the electromagnet (13), wherein the valve member (50) is fastened to the short-circuit yoke (40) by means of a centering spring (60), which is fastened at at least two fastening points (71) each to the valve member (50) and at least two fastening points (70) to the short-circuit yoke and has at least two short spring arms (62) and at least two long spring arms (63), one each between a fastening point (70) on the valve member and a fastening point (71) on the short-circuit yoke, is characterized in that the short spring arms (62) extend in a curved meandering fashion.

Abstract: An electromagnetically actuable fuel injector for an internal combustion engine is disclosed having an outer housing, a fuel inlet connector positioned in the upper end portion of the outer housing for reception of fuel therein, and an armature having a valve needle attached thereto and positioned adjacent the fuel inlet connector and spaced therefrom by a working gap. The armature defines a generally elongated central opening to receive fuel flow from the fuel inlet connector and has valve needle attached thereto which interacts with a fixed valve having a fixed valve seat associated with the housing to selectively permit fuel to flow through a valve aperture associated with the fixed valve seat.