Abstract: An actuator, in particular for valves, relays, or the like, is disclosed, which has an electromagnet (10) with a magnet coil (11), a magnet armature (12) that can be slid between two end positions, and a magnet yoke (13), and has an actuation tappet (14) driven by the magnet armature (12).

Abstract: A fuel injection system for internal combustion engines, has a distributor tube and a high-pressure pump that is driven as a function of engine rpm and that serves to generate the fuel pressure and throughput required in the distributor tube in the applicable operating state of the engine. The system also includes a fuel metering unit, which is associated with the high-pressure pump and includes a regulating valve which is actuated electromagnetically. The fuel metering unit is disposed in the high-pressure pump, and the outlet of the regulating valve discharges into the low-pressure region of the high-pressure pump. The above design features make a fuel metering unit possible that is capable of metering the exact quantity of fuel desired in the applicable engine operating state to the high-pressure pump of the CR system.

Abstract: A magnet valve for tank venting in motor vehicles, having at least one valve opening forming a sealing seat and having a spring-loaded valve member cooperating with the at least one sealing seat for opening and closing the valve and actuated by an electromagnet counter to the restoring force of a restoring spring. Downstream of the valve member, a flow element that throttles the flow of a gas is disposed, the shape of the flow element is adapted to the opening cross section of the sealing seat that cooperates with the valve member, for determining (metering) the flow quantity of the gas through the cross section of the flow element when the magnet valve is open. The shape of the flow element is determined (metered) in such a way that the area of the opening cross section of the effective valve seat is greater than 2.5 and preferably greater than 9 times the area of the effective cross section of the flow element.

Abstract: A solenoid valve for tank ventilation in motor vehicles, comprising a magnetic yoke with at least one valve opening and with a cooperating spring-loaded valve member for opening and closing the at least one valve opening. The valve element constitutes a magnetic armature of an electromagnet and is disposed between the magnetic yoke of the electromagnet and a hollow, cylindrical magnet core of the electromagnet. A valve seat body which is separate from the magnetic yoke and contains the at least one valve opening is disposed in an axial opening in the magnetic yoke, and on a side remote from the valve member. The valve seat body rests against a housing wall of the solenoid valve by use of a support element made of a damping material.

Abstract: A control unit (50) makes a single control signal available for driving the through-flow control valves (TEV1, TEV2) (51, 52). Through-flow valve (TEV2) has a larger maximum through flow than through-flow control valve (TEV1). A delay circuit is indicated by the phantom outline (52′) and is mounted at the valve stage TEV2 (52). The delay circuit includes an electric delay element (53) with the aid of which the original control signal is delayed in time by an amount &Dgr;t1 relative to the control signal of control valve (TEV1). The resulting delayed signal is supplied to an AND-gate (54) together with the original control signal. Accordingly, a control signal is present at the output of the AND-gate for the control valve (TEV2). The time delay makes possible the exclusive activation of the through-flow control valve (TEV1) (51) at a low pulse duty factors. In this way, a high small quantity meterability is achieved.

Abstract: A valve for metered introduction of fuel, volatilized from a fuel tank of an internal combustion engine, into the engine, having a valve housing which has an inflow neck for connection to a fuel tank or to an adsorption filter downstream of the tank for the volatilized fuel, and having an outflow neck for connection to the engine, having a valve member accommodated between the inflow neck and the outflow neck in the interior of the valve housing, which valve member is actuatable by an electromagnet that has a magnet core, and which cooperates with a valve seat embodied on a valve seat body, is characterized in that the valve housing includes a first housing part, closed on the inflow side by a protective screen, in/on which the electromagnet, the valve member, the valve seat body and the outflow neck are provided, and a second housing part, on which the inflow neck is disposed and which can be secured to the first housing part.

Abstract: A switching magnet with which a valve reed of a high-pressure pump is lifted from a seat in order to switch off a pump element of the high-pressure pump. The switching magnet is disposed in a housing that is manufactured as a plastic injection-molded part. An armature that floats in an armature chamber and a brass sleeve are disposed on the inside of the housing and the brass sleeve is turned upside down over a pole piece. The pole piece supports an O-ring, which rests against the inside of the brass sleeve and seals the armature chamber in relation to the outside and in relation to the coil. A second O-ring seals a passage of the tappet in relation to a pump cover of the high-pressure pump. The switching magnet is designated for use in a high-pressure pump of a common rail injection system of an internal combustion engine.

Abstract: A fuel tank ventilation valve for a Laval nozzle, which has a sensitive regulation of the through flow quantity. The valve has a valve seat which is embodied on a valve seat body which has at least one opening that can be closed by the valve member. A cross section of the at least one opening is embodied as essentially smaller than an entry cross section of the Laval nozzle that is disposed spaced apart from the valve seat. The valve is suited for a metered introduction of fuel that has evaporated from a fuel tank of a mixture-compressing internal combustion engine with externally supplied ignition into an intake tube of the engine.

Abstract: A 2/2-way solenoid valve which is open when it is without current and is inserted into a diesel fuel-carrying line to a high-pressure pump. The solenoid valve functions as an emergency shutoff or when the device is tested by supplying the solenoid valve with power which then closes the line to a high-pressure pump, which interrupts the high-pressure delivery. The solenoid valve has an armature, which functions in an armature chamber that is filled with diesel fuel and is sealed in relation to the outside by two O-rings. A plastic valve housing protects the coil and the contacting of the electrical connections from corrosion and protects the individual wires of the coil from vibration stresses. The solenoid valve is designated for use in common rail injection systems of vehicular internal combustion engines.

Abstract: An internal combustion engine that has an intake device with a turbocharger compressor device with a valve in a bypass line that bypasses the compressor device. To assure a simple, economical installation of the valve in a way secured against relative rotation, the valve is secured to a tubular receiving element, by means of a bayonet mount, formed by the valve and receiving element. The valve is intended for internal combustion engines that are equipped with a turbocharger compressor device.

Abstract: A tank venting system for motor vehicles, having an internal combustion engine supplied from a fuel tank. A filter housing with an adsorption filter, and an air inlet and an air outlet that can be connected to a venting neck of the fuel tank. An air pump device for error diagnosis, which is integrated with a pump housing that has a pump inlet and a pump outlet. To attain a compact design of the tank venting system that is economical in terms of installation space, the pump housing is mounted with the pump outlet oriented coaxially to the air inlet on the filter housing and secured on the filter housing by means of spring-elastic fastening elements. The transition between the pump outlet and the air inlet is sealed off in airtight fashion.

Abstract: An exhaust gas recirculation valve having a valve member that cooperates with a valve seat of a connection neck of an exhaust gas recirculation line. The neck protrudes into a tube of the intake system of an internal combustion engine, and the valve seat points toward the inlet side of the exhaust gas recirculation line. A valve member of the exhaust gas recirculation valve is thus acted upon by the exhaust gas pressure in the closing direction, as a supplement to a compression spring counter to an armature of an electromagnet acting in the opening direction. To compensate for the forces acting in the closing direction, the exhaust gas is carried via a conduit in the valve shaft into a control chamber, which is closed off from the pressure in the tube via a movable wall, having an effective surface area that substantially corresponds to the effective surface area of the valve member.

Abstract: A simplified, economical, noise-abating mode of securing a unit embodied for instance as a valve. For securing the unit, the unit has a housing with a first portion having a first encompassing outer face and at least one second portion having at least one second encompassing outer face, wherein a first sealing ring can be mounted on the first outer face, and the first portion and first sealing ring can be introduced into a recess of an installation wall. A second sealing ring can be mounted on the second outer face of the second portion, and the second portion and second sealing ring can likewise be introduced into the recess, so that the support of the unit in the recess is effected by means of the first and second sealing rings without the first and second outer faces of the unit resting on inner faces of the recess.

Abstract: A magnet valve having a valve seat body that has a valve opening with a valve seat. A spring-loaded valve member cooperates with the valve seat, in which the valve member forms the magnet armature of an electromagnet and is disposed between the valve seat body, acting as the check yoke of the electromagnet, and a hollow-cylindrical magnet core of the electromagnet. A valve member has a coaxial through opening, and having a damper element, disposed on the valve member, of elastic damping material that forms a sheathlike lining of the through opening that extends outward to cover one face end of the valve member and on the other face end of the valve member protrudes past this valve member, longitudinally continuous axial grooves open toward the through opening are made in the valve member and filled with damping material which protrudes past the second end face of the valve member, in order to assure long-term damping of switching noises.

Abstract: An adsorption filter for a fuel vapor retention system of a fuel tank of an internal combustion engine. The system has a valve that can be connected to an intake tube of the engine via a connecting line that is attached to the valve and to the fuel tank via a tank line. The tank line is attached to a housing of the adsorption filter and the valve is secured on the housing of the adsorption filter so that the valve can be slid into an opening provided in the housing. The adsorption filter according to the invention is suited for a fuel vapor retention system, for mixture compressing internal combustion engines with externally supplied ignition.

Abstract: A valve which has a dirt filter that is accommodated in a chamber between an electromagnet valve and an inflow adapter in a valve housing. The valve is suitable for metered introduction of volatilized fuel from a fuel tank into an intake tube of a mixture-compressing internal combustion engine with externally supplied ignition.

Abstract: A pump device for performing a leak diagnosis of a fuel vapor retention system. The pump device is provided for a fuel vapor retention system of an internal combustion engine, having a pump membrane driven by an electromagnet and a magnetic armature, which membrane defines a supply chamber that has valve devices, wherein a first valve can be connected to ambient air via a delivery line and can be connected via a second valve to a feed pipe that has an adsorption filter, and having a stop valve between the delivery line and the feed pipe, which valve is embodied so that it can be electromagnetically actuated. The pump device according to the invention is provided for a fuel vapor retention system of an internal combustion engine.

Abstract: A fuel line connector for producing recirculation of leakage fuel in a fuel injection valve in which communication of a fuel line with a connection bore of a housing, and with the holder of a fuel injection valve is produced. This is achieved by providing that the fuel line connector has elastically deformable retaining arms, which, after a connecting stub of the fuel line connector has been plugged into a connection bore, engage the housing that contains the connection bore from behind.

Abstract: An electromagnetically operated pressure switching valve has a valve housing, a magnet coil arranged inside the valve housing, a magnet core associated with the magnet coil and having a passage for a pressure medium provided with a valve seat, a magnet armature, a valve closing element arranged in the valve housing for controlling a flow of the pressure medium. The magnet armature has a portion extending in the magnet coil to an area of a greater magnetic flux density. The portion of the magnet armature cooperates with the valve seat of the passage and is limited by a ring-shaped circular flange-like edge extending outside of the magnet coil.

Abstract: A coil former with injection-molded encapsulation has a top fitting in which coil wire guides for guiding a coil wire are formed. By virtue of the specific shape and arrangement of the coil wire guides, it is ensured, in particular together with a special design of the housing which surrounds the coil former, that the coil wire is only stressed in its longitudinal direction. As a result, damage or preliminary damage of the coil wire is prevented and reliability is increased.