Abstract: A high-pressure fuel pump having at least one pump element is driven by a camshaft. An inside chamber of the pump housing, together with the cam-shaped portion of the camshaft and a blocking vane, forms a blocking-vane pump, which can act as a prefeed pump for the at least one pump element, whereby a prefeed pump can be integrated with the high-pressure fuel pump, which saves both production costs and installation space.

Abstract: A high-pressure fuel pump having at least one pump element is driven by a camshaft. An inside chamber of the pump housing, together with the cam-shaped portion of the camshaft and a blocking vane, forms a blocking-vane pump, which can act as a prefeed pump for the at least one pump element, whereby a prefeed pump can be integrated with the high-pressure fuel pump, which saves both production costs and installation space.

Abstract: An arrangement for sealed leading of at least one conductor has a housing having a housing wall which surrounds a housing aperture, a closing part which closes the housing aperture, a seal arranged between the closing part and the housing wall which surrounds the housing aperture, at least one conductor track serving as at least one conductor which is pressure-tightly connected with a conductor track carrier formed by an elastic flexible carrier film, the conductor track carrier being routed between the housing and the closing part, the at least one conductor being insulated from outside and being in close contact with the seal in a closing position of the closing part, the closing part being held to the seal by a closing force, a part of the conductor track carrier having an elastic flexible extension which protrudes within the housing, an electrical component which is movably arranged within the housing, the extension being bent for contacting the at least one conductor track thereon on at an end of the ext

Abstract: In a fuel injection pump with a housing, a metering pump and an injection adjuster for the metering pump, in which the injection adjuster has a piston that is acted upon by a restoring spring, the starting performance of the internal combustion engine supplied by the injection pump is to be improved by providing a starting spring which acts on the piston and acts counter to the restoring spring.

Abstract: In a fuel injection pump with a housing (10), a metering pump (18, 20) and an injection adjuster (26) for the metering pump, in which the injection adjuster has a piston (28) that is acted upon by a restoring spring (48), the starting performance of the internal combustion engine supplied by the injection pump is to be improved. To that end, a starting spring (50) is provided in addition, which acts on the piston (28) and acts counter to the restoring spring.

Abstract: A pressure control valve for installation in a supply line between a pump work chamber of a fuel injection pump and an injection point in the engine to be supplied. A valve body that has a first valve seat and an axial through conduit in which a pressure control valve closing member is guided. The pressure control valve closing member opens toward the injection point counter to the force of a first valve spring and has a sealing face that cooperates with the first valve seat, as well as with an axial through bore in the pressure control valve closing member. The bore can be closed by a back-flow valve that opens in the direction of the pump work chamber and has a second valve spring. For an optimal, unthrottled fuel flow through the pressure control valve, fuel conduits are respectively formed between the radially outer circumference faces of the first and second valve springs and the housing walls that encompass them, through which conduit the fuel flows in an unthrottled fashion.

Abstract: A throttle element installed in a blind bore of a connecting conduit which delivers fluid to cool an electromagnet. The throttle element includes a filter region upstream of a throttle which throttles flow of the fluid from an annular groove to the blind bore that connects with the electromagnet.

Abstract: A fuel injection pump, with an injection adjusting piston that serves to adjust the onset of injection, in which due to an off-center coupling to a cam part of the cam drive of a fuel injection pump embodied as a distributing injection pump, the injection adjusting piston is subjected to tilting moments during operation. In addition, the injection adjusting piston is subjected to other forces by means of a radially produced pressure fluid supply on a side of the injection adjusting piston disposed essentially opposite the coupling, and these other forces, together with the tilting moment forces, produce high, one-sided pressure loads in the radial direction on the injection adjusting piston. By producing a second pressure field, the injection adjusting piston undergoes a compensation of the above-mentioned forces acting on the injection adjusting piston and consequently experiences a significantly reduced radial load.

Abstract: A fuel injection pump for internal combustion engines which has an integrated feed pump with an outer ring and an inner ring, the latter being coupled to a drive shaft of the fuel injection pump via a toothing. The individual teeth of this toothing extend with their respective end face and tooth bottom along a respective circular arc about a center point, which is located in the radial plane of the drive shaft extending through these teeth along the axis of the drive shaft. As a result, an increased angular offset between the drive shaft and the plane of the inner ring without the risk of wear is possible.

Abstract: A fuel injection pump for adjusting the injection onset by an injection adjuster piston. The piston is embodied as a follower piston of a control slide disposed in the piston on one side the piston encloses a work chamber and is acted upon by the pressure in this work chamber counter to the force of a restoring spring, and is connected to a substantially stationary part of a cam drive of the fuel injection pump. To avoid feedback of pressure surges on the control slide and its adjustment, the inlet cross section of the connecting line is embodied as an elongated cross section extending in the displacement direction of the control slide. A more problem-free adjustment of the control slide is thus obtained, and hence also a more-precise, vibration-free adjustment of the injection adjuster piston and of the injection onset is obtained.

Abstract: The invention relates to a pressure valve for installation in a supply line between a pump work chamber of a fuel injection pump and an injection site in an internal combustion engine to be supplied thereby. A valve body is provided with a valve seat and has a through conduit in which a pressure valve closing member is guided. A check valve is disposed in a work chamber, wherein the check valve and the pressure valve closing member are movable relative to one another, in the through conduit. A restoring spring on the injection side causes the check valve to rest in the through bore and on the pump chamber side disposes the pressure valve closing member to the valve seat of the valve body.

Abstract: A fuel injection pump for internal combustion engines, which includes at least one pump piston driven by a cam drive mechanism to carry out a feed stroke and an intake stroke. The pump includes a fuel filled storage chamber that is under storage pressure and is for aspirating fuel in the intake stroke and for feeding excess fuel at the end of the feed stroke to a tank. A fluid filled drive mechanism chamber under lubrication pressure, contains the cam drive mechanism and is divided from the intake chamber by a movable wall. A vacuum chamber is disposed in the fluid filled drive mechanism chamber in order to damp pressure oscillations in the drive mechanism chamber, the vacuum chamber is at least partially defined by a membrane that is acted upon by the lubrication pressure. The rigidity of the membrane is designed so that its effectiveness comes into play only when there is a pressure load that is slightly greater than the stationary lubrication pressure in the drive mechanism chamber (22).

Abstract: A fuel injection pump, in which there is provided in a distributor of the fuel injection pump, a longitudinal bore which connects a pump working space to a control point on the distributor and which is fashioned in the distributor from one end face of the distributor. For sealingly closing this longitudinal bore, there is provided a pin which is inserted into a transverse bore intersecting the longitudinal bore and which thus has a sealing fit influenced by the pressure in the longitudinal bore.

Abstract: A fuel injection pump for internal combustion engines which has a moving part supported in a housing bore and on its jacket face on one side, has an exit opening that is under high pressure, and whose bearing is improved by virtue of the fact that on the jacket face of the part or in the wall of the housing bore, at least one pressure compensation is provided. The compensation face is connected to a high pressure source, is disposed on a side of the jacket face of the part which side is remote from the exit opening, and is continuously covered by the wall of the housing bore. As a result, a compensation of the pressure action by means of the pressure field prevailing in the region of the exit opening occurs so that an improved, less damage-prone bearing is produced with a greater high pressure tightness of the moving part.

Abstract: An apparatus for connecting two electrical connecting conductors to an electrical device, in which the ends of the connecting conductors are injection molded into a connection piece and connected to connection contacts which are secured onto a securing pin in a manner lying one behind the other and coaxially isolated by an insulating piece and, by means of a screwing part, the connection contacts, make contact with connection elements which are likewise mutually electrically isolated by means of an insulating part. In order to secure any desired rotational position, the connection piece has a peripheral toothing of the electrical device. This permits space-saving production, which is amenable to assembly, of an electrical connection between connecting conductor and electrical device, it being possible to bring the external connecting conductors into a desired position with little outlay.

Abstract: A fuel-injection pump of the distributor type has a distributor shaft which is coupled fixedly in terms of rotation to a drive shaft and which, during rotation, successively supplies an injection nozzle with fuel from a pump working space. Seated displaceably in each case in one of a plurality of radial bores in the distributor shaft are pump pistons which, on the one hand, limit the pump working space and, on the other hand, bear non-positively on a coaxial cam ring via rollers held in roller shoes. For a construction of the injection pump which is advantageous in manufacturing terms, the drive shaft engages over the distributor shaft by means of a cup-like coupling head, and a number corresponding to the number of radial bores, of axial slots for the displaceable reception of the roller shoes are made in the cup wall.

Abstract: A distributor-type fuel injection pump of the radial-plunger type with two intersecting cylinder bores in the rotor part, in each of which two pump plungers arranged opposite one another and delimiting a common pump working space are guided. The pump plungers guided in the first cylinder bore are here designed with an axial length such that, during their delivery stroke, they project into the second cylinder bore, the pump plungers of which do not reach the first cylinder bore even in the case of the maximum delivery stroke. According to the invention, the short pump plungers have a stop formed by a collar on their end projecting out of the cylinder bore, and this stop prevents the short pump plungers from slipping unintentionally in between the long pump plungers when the pump is switched off, thus allowing the delivery stroke of the pump plungers to be increased to an extent such that, during their suction stroke, the long pump plungers leave the cylinder bore guiding the short pump plungers.

Abstract: A cam ring for a cam drive of a distributor radial piston injection pump. Said cam ring includes on the outside a connecting member which is formed in one piece that is particularly roller-shaped with an axis parallel to the axis of the cam ring and that engages a recess of an adjusting member that serves in the adjustment of the cam ring. This results in an embodiment of the cam drive that can be advantageously assembled and has a well-designed cam ring with a very low incidence of failure with regard to durability, production and assembly.

Abstract: A vane cell pump with a housing ring closed on the face end and with a rotary piston that revolves eccentrically to the inner wall of the housing ring, which rotary piston encloses at least one supply chamber with the inner wall of the housing ring and with at least one spring-loaded vane that is held radially displaceably in order to limit the supply pressure at a given rpm, at least one pressure impingement face that is acted upon by the supply pressure in the supply chamber is formed on the vane in such a way that by the supply pressure, a radial force oriented to the vane counter to the compression spring is produced that at a predetermined supply pressure is greater than the total of the force of the compression spring and the centrifugal force acting on the vane.

Abstract: A fuel injection pump of the radial piston distributor injection pump type which includes pump pistons, which during execution of their intake stroke, are acted upon from a side of a pump work chamber with fuel at a first, higher pressure, which is taken from a suction chamber. The pump pistons on their opposite outer face ends are acted upon by a pressure of a lesser magnitude, and this latter pressure is adjusted in a chamber that is divided from the suction chamber by a movable diaphragm. Hence mechanical restoring means for the pump pistons for executing their intake stroke are dispensed with.