Abstract: A fuel-injection pump comprises a pump cylinder, a pump plunger formed with a first relief duct opening into a working space and also opening radially at a first outlet opening into a relief space, and a drive for periodically rotating and axially reciprocating the plunger. An annular slide on the plunger can cover the first outlet opening so that a speed controller can axially shift the slide and thereby vary the venting of the working space into the relief space. An annular groove formed in the cylinder opens inward toward the plunger and a second outlet opening from the first relief duct also opens at the groove. A second relief duct formed in the plunger and opening at a respective second outlet opens at the groove and the second outlet openings are relatively spaced such that during a partial stroke of the pump plunger they communicate with each other via the groove.

Abstract: A speed governor for fuel injection pumps of internal combustion engines has an electric control motor driven via an electronic control unit for actuating a quantity control member of the injection pump. A travel limitating element of the quantity control member is provided in order to determine the maximum injection quantity. The travel limitating element is adjustable independently of the electronic control unit between a position for the starting quantity and a position for the full-load quantity in accordance with engine characteristics. While the operating rpm performance graph is controlled by the electrical portion of the speed governor, the maximum rpm is determined by hydraulic-mechanical means.

Abstract: A fuel injection pump of the distributor type in which a pump piston is driven to reciprocate and rotate simultaneously, thereby acting as a distributer. For fuel injection quantity regulation, an annular slide that is displaceable on a pump piston is provided, by way of which the pump work chamber can be relieved. To attain a low injection rate in the idling range, in addition to a first outlet opening, controlled by an upper edge of the annular slide, second outlet openings axially offset from the first are provided, for a relief conduit of the pump work chamber which cooperate with a radial control opening, which communicates with the pump suction chamber and is disposed in the wall of the annular slide. In the opening direction of this control opening, a groove provided with a throttle is provided, by way of which during idling operation, prior to the opening of the first relief opening, fuel can flow out of the pump piston in order to decrease the pumping rate of the pump piston.

Abstract: A fuel injection pump of a distributor injection pump type in which a quantity adjusting device is an annular slide that is axially displaceable on a fuel injection quantity regulator and which can additionally be rotated by a torque device. With the aid of this torque device, the control effectiveness of a second control edge, for instance in the form of a rectangular groove is controlled. The torque device is equipped with a clutch, which is embodied either via a spring or via a cam race. The torque device is actuated via an adjusting lever connected to the annular slide adjusting lever that serves to arbitrarily vary the fuel injection quantity at the direction of the driver of the motor vehicle.

Abstract: An rpm governor for fuel injection pumps of internal combustion engines, having a pivotable spring tensioning lever which is engaged by an rpm signal transducer counter to the force, acting as the guide variable, of a governor spring and on which a pivot shaft following up the adjusting movement of the tensioning lever, of a two-armed transmission lever is disposed. The transmission lever is articulated on a quantity control member and is pivoted via an electrical adjusting motor. The adjusting motor is triggered by an electrical control unit, which processes engine and environmental parameters and effects a correction of the injection quantity.

Abstract: A fuel injection pump which has a shutoff device for the fuel supply to the pump work chamber, comprising a magnetic valve, which controls an intake bore to the work chamber of the fuel injection pump. The fuel injection pump further has a relief conduit, which is connected by an annular slide on the pump piston with the suction chamber in order to terminate the effective supply stroke of the pump piston. In order to assure reliable shutoff of the fuel supply to the pump work chamber, a check valve is further disposed in the connection between the pump work chamber and the suction chamber, which check valve is closed, during the intake stroke of the pump piston, with the collaboration of the pressure drop from the suction chamber to the pump work chamber.

Abstract: A fuel injection pump including a control device is proposed in which a control lever which determines the fuel injection quantity is placed at an adjustable spring which is not supported by the main power source of a governor lever. The control lever is subjected to lesser forces provided by the intended auxiliary springs, starting springs or idling springs.

Abstract: A rotary magnet having a transducer for fuel regulation of a fuel injection pump which requires a minimum of structural space while having a maximum of adjustment force.

Abstract: A fuel injection system for Diesel internal combustion engines, particularly vehicle Diesel engines, is proposed which has a full-load stop dependent on atmospheric pressure. The position of the full-load stop which adapts the injection quantity to the variable ambient air pressure is derived from an air pressure adjusting member and transmitted onto the full-load stop via a transmission member. A locking mechanism, which locks the transmission device in a plurality of positions counter to the force exerted by the full-load stop, is associated with the transmission member. The transmission member has two disks draggably coupled within a predetermined range, one of which disks is actuated by the air pressure adjusting member and the other of which disks cooperates with the full-load stop. The draggable coupling effects an adjustment of the full-load stop, if the full-load stop is relaxed, so that the air pressure adjusting member need exert no more than a small adjusting force.

Abstract: A fuel injection pump for internal combustion engines is proposed, which is embodied as a radial-piston/distributor pump, having an axially fixed and rotationally driven distributor, on the end of which that is remote from the drive and protrudes freely out of the distributor cylinder guiding the distributor an annular slide is disposed, which can be both rotated and axially displaced by means of adjusting drives. Both the quantity adjustment and control of the instant of injection are effected in a electrically controlled manner by relief openings provided on the distributor and control openings which are provided on the annular slide. All of the foregoing can be effected precisely on the end of the distributor which is free of moment.

Abstract: A fuel injection pump which has a shutoff device for the fuel supply to the pump work chamber, comprising a magnetic valve, which controls an intake bore to the work chamber of the fuel injection pump. The fuel injection pump further has a relief conduit, which is connected by an annular slide on the pump piston with the suction chamber in order to terminate the effective supply stroke of the pump piston. In order to assure reliable shutoff of the fuel supply to the pump work chamber, a check valve is further disposed in the connection between the pump work chamber and the suction chamber, which check valve is closed, during the intake stroke of the pump piston, with the collaboration of the pressure drop from the suction chamber to the pump work chamber.

Abstract: A fuel injection pump of the distributor pump type is proposed, in which the fuel quantity is governed with the aid of an annular slide displaceable on the pump piston. The annular slide is shifted by an electromechanical final control element. The shifting is effected via a shaft to which a connecting element is connected with an eccentricity (E); the connecting element is coupled to the annular slide. For balancing the mass of the thus eccentrically articulated annular slide, a counterweight is secured on the shaft.

Abstract: There is proposed a speed governor for a fuel injection pump for internal combustion engines having a governor lever for setting the fuel injection quantity and a governor spring assembly arranged to engage the governor lever and counter to which an rpm-dependent force acts. To compensate for manufacturing tolerances of the governor spring assembly, it is also proposed that the effective length of a spring of the governor spring assembly be varied by realizing one of the supporting parts of the governor spring assembly as a multiple-part element. The supporting part is embodied such that it can be displaced by an adjusting lever in order to vary the pre-stressing of the governor spring, and that the first part is extended coaxially through it out of the interior of the fuel injection pump and can then be rotated in order to adjust the effective length of the governor spring and then fixed in an intended rotational position.

Abstract: In a pressure valve inserted in a fuel supply conduit between a fuel injection pump and an injection vavle of the internal combustion chamber and comprising a valve member and a locking member cooperating with the valve member and opening in the direction of the fuel supply, and a back-pressure relief valve including a closing element which closes an axial bore of the locking member, a throttle orifice is provided in the connection between the axial bore of the locking member and an axial recess formed in the connection element connected to the fuel supply conduit leading to the internal combustion engine so that no after-injections occur, and a sufficiently great stable pressure is maintained in the fuel supply system.

Abstract: A fuel injection system (FIG. 1) provided with pump/nozzles is proposed, which has a central fuel metering device which functions with a deviation or metering piston and a distributor or multi-way valve as a metering control member.

Abstract: To provide for accurate alignment of a housing (10) retaining a fuel injection element (12, 15), and a second housing (23) retaining a control element controlling a function of the fuel injection element, in which the relative positions of the pump housing (10) and of the control element housing (23) are determinative of adjustment and alignment of interengagement between the injection element and the control element, the two housings are provided with attachment screws to attach them securely together, while permitting respective removal, for example for replacement of a sealing gasket (26), and to insure precisely aligned re-assembly, the housings include position locating means (27-34, 35') such as interengaging projection-and-recess means (40, 50, 60, 70, 80, 90, 100, 110; 37, 47, 57, 67, 77, 87, 97, 107) which accurately position the housings with respect to each other, and which are positionable after the housings have been first assembled and aligned to provide for said adjusted and aligned interengage

Abstract: A fuel injection pump having a device for adjusting the injection timing having a work chamber defined by an adjusting piston and communicating via a throttle bore with a pressure source from which the pressure to adjust the adjusting piston is drawn. In order to modify the pressure in the work chamber, the work chamber can be made to communicate via a pressure limiting valve with the relief side of the pump. The control force of the pressure limiting valve is adjustable by means of a stepping motor. An influence on the pressure controlling the adjusting piston is thereby obtained which is restricted to the work chamber.

Abstract: An adjusting device in a fuel injection pump including a pivotable lever with a stop on one end which limits the movement of a quantity adjusting device counter to a spring force, a stepping motor including an adjusting device which actuates said lever for adjusting said stop which limits movement of the quantity adjusting device.

Abstract: A fuel injection pump including a control device is proposed in which a control lever which determines the fuel injection quantity is placed at an adjustable spring which is not supported by the main power source of a governor lever. The control lever is subjected to lesser forces provided by the intended auxiliary springs, starting springs or idling springs.

Abstract: A fuel injection pump in which the quantity adjustment member has a travel limitation in the form of an adjustable stop, which is adjusted in accordance with the displacement of an adjusting piston in accordance with a contour defined on the adjusting piston. The displacement of the adjusting piston is effected with the rpm-dependent pressure of the suction chamber of the fuel injection pump, and the work chamber preceding the adjusting piston can be uncoupled from the suction chamber via a throttle. The maximum displacement of the adjusting piston is limited by a stop which is adjustable in accordance with charge pressure or by a pressure control device by means of which the pressure in the work chamber can be adjusted or limited.