Abstract: Fuel injection pump for internal combustion engines with at least one pump element and a control slide valve, axially displaceable on the pump piston, and, for fuel control, additionally the twistable pump piston, the control slide valve being secured against self-twisting by a lug, which is guided in a slit-shaped groove of the cylinder sleeve of the pump element.

Abstract: Fuel injection pump for internal combustion engines comprising at least one pump element consisting of a cylinder liner (2) and a pump plunger (3), and comprising a control slide (9) on the pump plunger (3) which is rotatable for the fuel control. The control slide (9) is axially displaceable for the purpose of changing the start of injection, wherein the axial displacement is effected by means of a rotating shaft (12) which is supported in the pump housing (1), at least one adjusting bolt (14) being fastenable at the rotating shaft (12) in its installation position by means of a fastening part (clamping nut 15) after adjustment.

Abstract: Fuel injection pump for internal combustion engines with several pump elements located inline, wherein the commencement of injection of each of these pump elements takes place by a control spool axially displaceable on the pump piston and by control of relief ducts provided at the pump working spaces of the pump, the control spools are operated by a torque shaft which is formed in two parts, the first shaft part is axially secured, and the second shaft part is guided so as to be sealed in a bearing bush located in the pump casing. The two shaft parts are pushed one into the other by means of a trunnion and a blind hole which receives the trunnion. The shaft parts are rotationally connected to one another by means of a claw clutch.

Abstract: It is proposed that a drive tappet of a pump piston be provided with an integrated hydraulic supply onset adjusting device. This device includes an adjusting piston, which is guided in a work cylinder and is joined to the piston base of the pump piston, and a pressure chamber. The delivery of the control fluid pumped into the pressure chamber is effected via a delivery conduit discharging into the cylinder bore and a connecting conduit extending inside the pump piston and leading to the pressure chamber. By means of the control point located at the discharge point of the delivery conduit, relatively high control pressures can be fed into the system without relatively large leakage losses. The apparatus is usable in all piston-type supply pumps in which a control face on the pump piston, in cooperation with the control opening in the cylinder bore, determines the onset of supply.

Abstract: A fuel injection pump for internal combustion engines, having a plurality of in-line pump elements in which the supply onset is effected by means of control slides, one of which is axially displaceable on each of the pump pistons and by controlling relief conduits of the pump work chambers. The control slides are actuated via a torque shaft in that via driver tangs which are secured to the torque shaft by fastening parts screwed to the torque shaft, the control slides are axially displaced upon rotation of the torque shaft. For adjusting the stroke or axial position of the individual control slides to one another, spacer means, in particular shims are provided between the fastening part and the torque shaft in the stroke direction of the control slides.

Abstract: A fuel injection pump for internal combustion engines has a reciprocated pump plunger (3) and a control slide (5), which is displaceable on the latter, and comprises a control borehole (28) which cooperates with a helical groove (15) on the pump plunger (3), the helical groove (15) communicates with the pump work space (26) via a duct (24, 25). For the purpose of controlling the start of delivery, the helical groove (15) communicates with a cylindrical counterbore (21) at the end area (22) remote of the pump work space. Moreover, the end area (23) of the control groove (15), which end area (23) is close to the pump work space, can communicate with a second counterbore in order to ensure a zero delivery when the helical grooves (15) are relatively flat.

Abstract: A camshaft for a fuel injection pump of internal combustion engines, having reinforcements formed concentrically or following parallel to the cam outline and located adjacent the cams, and/or these and the camshaft bearings having a diameter enlarged in respect to the shaft diameter.

Abstract: A fuel injection pump for internal combustion engines having control slides that are both axially displaceable and rotatable on the pump piston via a governor rod for controlling the injection quantity and the injection onset. A slit hub is releasably clamped on the governor rod with a driver arm, the hub being arranged to engage the control slide between two working faces and the hub has a driver recess for the rotational adjustment of the control slide. The driver recess is engaged by a tang joined with the control slide.

Abstract: A fuel injection pump for internal combustion engines having control slides that are both axially displaceable and rotatable on the pump piston via a governor rod for controlling the injection quantity and the injection onset. A slit hub is releasably clamped on the governor rod with a driver arm, the hub being arranged to engage the control slide between two working faces and the hub has a driver recess for the rotational adjustment of the control slide. The driver recess is engaged by a tang joined with the control slide.

Abstract: A fuel injection pump for internal combustion engines has a pump piston which via a pressure plate rests with a piston bottom on an axially driven tappet with slight play. This contact is brought about by a pressure spring, which is supported on a spring plate so as to grip the piston bottom from behind. To prevent the pressure plate from falling out if the pump piston should become stuck, the spring plate is cup-shaped and includes a cylindrical cup portion having two projecting protrusions. The pressure plate has a radial flange adapted to rest on the projecting protrusions. Those protrusions and the radial flange are adapted to one another such that the pressure plate can be introduced in a predetermined position through the protrusions. The piston bottom located between the pressure plate and the plate bottom of the spring plate prevents the pressure plate from being able to assume a position, after assembly, in which it could slip and escape back outwardly through those protrusions.

Abstract: A fuel injection pump for internal combustion engines is proposed, in which for normal engine operation the control of the injection quantity and of the beginning and end of supply for injection is effected by means of a control slide which is axially displaceable on the pump piston and in which a radial bore (connecting conduit) controlled by the pump piston is present in the pump cylinder, with which radial bore the pump work chamber can be made to communicate with the suction chamber of the pump. The latest end of supply for the injection is determined in that after a predetermined stroke of the pump piston a relief conduit is arranged to coincide with the radial bore and thereby relieve the pump work chamber. Because the radial bore is only blocked after a pre-stroke has been executed by the pump piston the earliest supply onset also can be controlled with this bore as well.

Abstract: A fuel injection pump for internal combustion engines having in-line pumping elements, having pump pistons on which control slides are axially displaceable, in particular for adjusting the injection onset; in a relatively greatly displaced position, these control slides being arranged to interrupt the injection. The control slides are moved by first and second governor rods, each part of which carries one group of driver members of the control slides, and both governor rods are rotatable relative to one another. As a result, it is possible for normal operation to be controlled by the one governor rod, while at the same time an appropriate number of engine cylinders is shut off by the other governor rod, in that the associated control slides are displaced into respective corresponding positions.

Abstract: A fuel injection pump for internal combustion engines, in which at least during normal engine operation the injection quantity is effected by controlling a fuel quantity control conduit which is provided in the pump piston in communication with the pump work chamber, via a control slide that is displaceable on the pump piston in cooperation with fuel quantity control openings, the axial position of the control slide determining the onset and end of supply. The earliest possible supply onset is further determined by a supply onset control opening disposed in the pump piston, which opening is sealed by entering into the cylinder liner after a pre-determined stroke extent has been traversed. Subsequent to this entry, an injection pressure can build up in the pump work chamber.

Abstract: A pressure valve is proposed herein which is built into the injection pump, its valve closing body being guided in a valve carrier, and arranged to open in the supply direction of the fuel, counter to the force of a restoring spring. A check valve is built into the pressure valve, its valve seat carrier being secured to the valve closing body and its movable valve closing member is arranged to open counter to the supply direction of the fuel via a spring supported on the base of the valve closing body. For axially securing the valve seat carrier on the valve closing body, the restoring spring simultaneously engages the valve seat carrier. As a result, the satisfactory functioning of the check valve is assured.

Abstract: A fuel injection pump for internal combustion engines having a plurality of in-line pumping elements, in which there is one pumping element in the injection pump for each individual combustion chamber of the engine. Each pumping element is surrounded by one partial suction chamber, and quantity dividers inserted into inflow and outflow conduits divide the flow of fuel into partial fuel flows so that each partial suction chamber is flushed, whereby no outflowing fuel is capable of mixing with inflowing fuel.

Abstract: A fuel injection pump is proposed for internal combustion engines having a control slide displaceable on the pump piston. The control slide cooperates with an oblique groove on a pump piston. The oblique groove is arranged to communicate via a conduit with a pump work chamber. The pump piston is rotatable and has a longitudinal groove of predetermined length on its jacket surface, which groove is adapted to communicate with the oblique groove and with its end remote from the pump work chamber determines the supply onset of the pump by plunging into the control slide.

Abstract: A fuel injection pump for internal combustion engines is disclosed, in which a profiled governor rod of a supply quantity adjusting member, the latter controlled by a final control element, is extended at its end toward the final control element out of the pump housing and is supported in a displaceable manner at the point where it emerges. For the sake of sealing the support point, a cylindrical slide bearing sheath is secured in the pump housing at the location where the governor rod emerges from the pump housing. A cylindrical governor rod guide means which is joined to the profiled governor rod and closes it off or surrounds it in a sealing manner is guided displaceably, with the least possible play, in the slide bearing sheath.

Abstract: The fuel injection quantity of a fuel injection apparatus provided with a fuel injection pump is electrically regulated by means of the opening duration of a metering valve. Additionally, a shift in the instant of supply onset controlled in accordance with operating characteristics is attained by means of a change in the return-flow fuel quantity, which is diverted into a refill reservoir and then refilled completely into the pump work chamber by the beginning of the next subsequent injection stroke. Serving as the sole connection between the refill reservoir and a pump work chamber is an overflow conduit, the overflow opening of which, located at the discharge location into the pump work chamber, is opened by two control locations on the pump piston at the end of supply and once again shortly before bottom dead center.

Abstract: The fuel injection quantity of a fuel injection apparatus provided with a fuel injection pump is electrically regulated by means of the opening duration of a metering valve. Additionally, a shift in the instant of supply onset controlled in accordance with operating characteristics is attained by means of a change in the return-flow fuel quantity, which is diverted into a refill reservoir and then refilled completely into the pump work chamber by the beginning of the next subsequent injection stroke. Serving as the sole connection between the refill reservoir and a pump work chamber is an overflow conduit, which is opened by two control locations on the pump piston at the end of a supply and shortly prior to the bottom dead center. Both the pump cylinder with the pressure valve and the refill reservoir and the metering valve are inserted in a leak-fuel-proof manner in a cylinder head of the pump housing, which is embodied in two parts.

Abstract: The support of a relief valve in a constant pressure relief valve of the fuel injection pump comprises a bolt and two openings for receiving it in the sheath-like wall of the movable valve closing body. The openings are embodied by a bore drilled through the wall of the valve closing body at right angles to the longitudinal axis of the valve closing body. The bolt receives a spring plate of a spring of the relief valve in a depression and is thereby positioned and secured.