Abstract: A fuel injection pump is proposed in which, at relatively low rpm, there is an outflow of a partial quantity of fuel for the purpose of prolonging the injection time. This outflow begins only after the injection has already begun.

Abstract: A fuel injection pump is proposed which has a distributor in which both the injection quantity and the onset of injection are variable. The distributor is axially displaced via electric servomotors and is rotated relative to the drive shaft.

Abstract: A distributor injection pump is proposed which has radial pistons disposed in a pump housing and a distributor which by axial displacement determines the injection quantity. The adjustment of injection onset is attained by the distributor being rotatable relative to the drive shaft; this relative rotation is attained via an intermediate coupling having a coupler ring adjustable by means of an intermediate rod actuated by a stroke device.

Abstract: A fuel injection apparatus for internal combustion engines is proposed in which the onset and end of injection are determined by a hydraulically actuated control slide. The injection pumps of the apparatus, which are preferably combined with an injection nozzle to make a pump/nozzle unit have a central control pressure pump supplied with fuel by a supply pump. The control pressure pump creates a control pressure (p.sub.S) which is a multiple increase in comparison to the supply pressure (p.sub.V) of the supply pump and actuates the control slide. Each control slide is placed under control pressure (p.sub.S) to initiate the onset of injection via a control line which is separated from the filling lines of the injection pump and closes an overflow channel which leads away from the pump work chamber. At the end of injection the control slide again relieves this overflow channel to a supply line during its return stroke.

Abstract: A fuel injection pumping apparatus comprises an axially movable distributor member the axial setting of which determines the amount of fuel supplied by the apparatus at each pumping stroke. The distributor member is biassed by a spring in one axial direction and is movable in the opposite direction by varying the fluid pressure in a chamber through a port. The port is formed in a sleeve which is coupled to the distributor member by means of a lever and a rod member is axially movable within the sleeve. The axial position of the rod member can be varied to alter the effective size of the port and the distributor member and sleeve move because of the change in pressure in the space. A new equilibrium position is thus established with the distributor member following the movement of the rod member.

Abstract: A governor sleeve is axially displaceable on a stationary governor shaft and has an inner space which is defined by one end of the governor shaft and which communicates with the inner chamber of a pump housing charged with fuel. The inner space varies in volume drawing thereinto and discharging therefrom fuel in response to axial displacement of the governor sleeve.

Abstract: A regulator shaft, rotary centrifugal weights, and a governor member which is slidable on the regulator shaft, are arranged in a pressurized, fuel-filled inner chamber of a fuel injection apparatus. The centrifugal weights engage regulator springs via the governor member and a control sleeve. The governor member is closed adjacent the free end of the regulator shaft except for a throttle opening for communication with the inner chamber. The governor member is provided with a work chamber, one extremity of which is limited by the regulator shaft. A conduit leading to a fuel tank communicates with the work chamber. A magnetic valve connected to an electronic control device for control of the fuel flow is provided in the conduit. Opening the magnetic valve causes a pressure drop in the work chamber which in turn causes the governor member to press against the centrifugal weights, thus enhancing the fuel injection quantity so as to reduce deviations from those desired and pre-set.

Abstract: A fuel injection apparatus (FIG. 1) for internal combustion engines is proposed, in which the onset and end of injection are determined by means of a hydraulically actuated control slide. The injection pumps of the apparatus, preferably combined with an injection nozzle to make a pump/nozzle unit, have a central control fuel source represented by a supply pump and a first pressure limitation valve, which generates a control pressure (p.sub.S) actuating the control slide which is several times greater than the supply pressure (p.sub.V) determined by a second pressure limitation valve. In order to initiate the onset of injection, the control slide is placed under control pressure (p.sub.S) by a valve assembly via a distributor apparatus and closes an overflow channel leading out of the pump work chamber. In order to control the end of injection, the control slide during its return stroke again relieves this overflow channel toward a low-pressure line. The control pressure (p.sub.

Abstract: A fuel injection pump is proposed with an axially displaceable distributor for the purpose of affecting the fuel amount and with a metering piston designed to determine the amount of injected fuel by means of a reservoir with adjustable volume.

Abstract: A fuel injection pump of the rotary distributor type having opposed fuel pumping pistons housed within a rotor and actuated by an internal ring cam. Fuel distribution, metering and timing control are effected through ports and slots associated with the rotor, the pump housing and a spill sleeve. The angular position of the cam is varied automatically in accordance with changes in engine speed as are the relative positions of certain ones of said ports and slots to provide an automatic advance of the fuel injection timing. The pump is particularly suited for electronic governing, electronic timing control and electronic control of rate of injection.

Abstract: A fuel injection pumping apparatus includes an axially movable distributor member which carries pumping plungers movable inwardly to effect delivery of fuel by means of cam lobes formed on a cam ring. The axial position of the distributor member determines the amount of fuel supplied by the apparatus each time the plungers are moved inwardly. The distributor member is moved axially by varying the volume of liquid in a chamber, the distributor member moving as the volume of liquid increases against the action of a spring. The volume of liquid is controlled by means of a sleeve axially movable by means of a governor mechanism which includes weights. The sleeve controls the size of a port which communicates with the chamber and liquid is supplied to the chamber through a passage from a supply pump.

Abstract: A start lever (56) and a tension lever (18) are rotatable about a pin (19). The tension lever (18) is connected to a fuel control sleeve (28) so that an amount of fuel pumped and injected into an engine depends on the position of the tension lever (18) and sleeve (28). Upon rotation of flyweights (13), a governor rod (52) is urged through a hole (54) in the start lever (52) toward the tension lever (18) against the force of a start spring (22). A flange (53) formed on the governor rod (52) abuts against the start lever (18) so that the force of the start spring (22) is transmitted to the flyweights (13). The end of governor rod (52) abuts against the tension lever (18) at a certain engine speed so that further movement of the governor rod (52) is opposed by a governor spring (26) connected to the tension lever (18).

Abstract: A hydraulic control mechanism for controlling timing and output as a function of speed and throttle position on a diesel engine fuel injection pump. The hydraulic control mechanism includes two valves and three flow orifices arranged to control governing fluid pressure supplied to the pump so as to provide idle governing and overspeed governing as well as load control in between of the pump.

Abstract: A fuel injection pump in which a relief channel is formed which communicates with the pump working chamber and is arranged to be blocked by a valve means, associated with a valve actuating means responsive to a pressure varying with engine r.p.m., during starting of the engine so that the fuel injection quantity is increased. Thus, improved starting characteristics of the engine can be obtained. Said relief channel may comprise a first channel communicating with the pump working chamber, and a second relief channel which has a portion thereof extending in the pump plunger to terminate in an outer periphery of the bottom end of said plunger and is so disposed as to communicate with the pump suction chamber after a predetermined delivery stroke length or prestroke has been executed. Communication between said first and second relief channels is adapted to be interrupted by said valve means at less than a predetermined engine r.p.m.

Abstract: A distributor-type fuel injector pump for an internal combustion engine has a rotary distributor member formed with two outlet passages communicating with a pump chamber and arranged to distribute fuel intermittently to successive fuel delivery apertures leading to respective engine cylinders, so that in each revolution of the distributor the pump delivers to each cylinder a principal fuel injection at the end of the compression stroke, preceded by a pre-injection. Automatic timing control means advance the delivery stroke of the pump automatically in response to engine speed increase, and the angle between the outlets of the two outlet passages is such that as the engine speed varies the ratio of the fuel pre-injected to that of the principal injection into each cylinder varies according to a rule predetermined in relation to the type of engine (i.e. precombustion chamber or direct injection type).

Abstract: An apparatus for controlling the ratio of air to fuel quantity of the operational mixture to be introduced into the combustion chambers of an internal combustion engine which includes an air flow rate meter moving under differential pressure against a constant hydraulic restoring force, which air flow rate meter adjusts a metering cross section in a supply line leading to a fuel injection pump, with the pressure drop at the metering cross section being maintained constant with the aid of a differential pressure valve. The air flow rate meter is part of a known apparatus which controls the fuel component in accordance with the quantity of aspirated air and also controls the component of exhaust gas to be fed back.

Abstract: A fuel injection device adapted to control the amount of injection by the opening time and opening area of a gate which is disposed in a fuel feed passage and which is controlled in connection with the engine rpm and the amount of suction air. The fuel injection device is characterized in that a choke is disposed between the fuel distributing port of a fuel measuring and distributing mechanism and the valve of an automatic valve type fuel injector, whereby the rate of flow and hence the rise time of pressure pulses applied to the injection valve are controlled to provide an accurate amount of injection.

Abstract: A fuel injection pump in which a relief channel is formed which communicates with the pump working chamber and is arranged to be blocked by a valve means, associated with a valve actuating means responsive to a pressure varying with engine r.p.m., during starting of the engine so that the fuel injection quantity is increased. Thus, improved starting characteristics of the engine can be obtained. Said relief channel may comprise a first channel communicating with the pump working chamber, and a second relief channel which has a portion thereof extending in the pump plunger to terminate in an outer periphery of the bottom end of said plunger and is so disposed as to communicate with the pump suction chamber after a predetermined delivery stroke length or prestroke has been executed. Communication between said first and second relief channels is adapted to be interrupted by said valve means at less than a predetermined engine r.p.m.

Abstract: An rpm regulator for fuel injection pumps of internal combustion engines having a starting lever, which is coupled on one side with a fuel quantity setting member and on the other side with an rpm governor, which contacts the starting lever with an rpm dependent force in opposition to an arbitrarily variable force of a main control spring, which is included in series with the main control spring and is deformable up to a first stop. A further spring, also deformable up to the first stop, is provided parallel to the starting spring for the purpose of adaptation of the fuel injection quantity. It is proposed to provide a second stop in addition to the first stop, at least in the full load range, by means of which the starting lever can be blocked in the direction of the first stop from the time an adaptation rpm is attained and before it reaches the first stop.

Abstract: A metering and distribution device for a fuel injection system of an internal combustion engine includes a housing with a fuel inlet port connected to a fuel pump and a circumferential row of fuel outlet ports respectively connected to fuel injectors for respective engine cylinders. A rotor, rotatably mounted in the housing, is provided with an orifice and rotates in a timed manner with the engine. A control member is telescopically mounted on the rotor and moves axially thereon in accordance with variations in the flow rate of intake air and has a circumferential row of orifices equal to the fuel ports and cylinders. The inner member, whether the rotor or control member, has an axially extending fuel passage connected to the inlet port and the rotor's rotation moves the rotor's orifice into overlapping communication with successive orifices in the control member and thus to fuel outlet ports and respective cylinders.

Abstract: The present invention is directed to a fuel injection apparatus for injecting fuel into diesel engine cylinders, comprising multi-type plunger pumping units for pressurizing a fuel to be supplied from a fuel tank into the cylinders of a diesel engine, an accumulation for accumulating therein the fuel pressurized by the multi-type plunger pumping units, a fuel flow control valve for successively distributing the pressurized fuel toward the cylinders of the diesel engine, and fuel injection nozzles, each being disposed adjacent to one of the diesel engine cylinders for injecting the pressurized fuel distributed by the fuel control valve into the adjacent cylinder of the diesel engine.