Abstract: An electric actuator responds to a command for control of fuel injection rate. A position sensor including a multiturn spiral resistor senses the position of the actuator as a varying resistance to produce a corresponding position signal for feedback control purposes. The rate of change in the resistance of a potentiometer corresponding to the fuel injection rate in the range of zero to the rate required under full load differs from that in the range of the rate required under full load to the rate required during starting of the pump. The potentiometer includes first and second series connected resistors with different resistances per unit length. The resistance of the first resistor may be nullified during starting of the engine.

Abstract: A fuel injection pump for an internal combustion engine is proposed having an adjustment piston for the adjustment of the onset of the injection, on which an rpm-proportional fuel pressure determined by a pressure control valve and a pressure valve placed behind it and controllable in dependence on temperature acts. An adjustment device controls a full load stop for the limitation of the full-load fuel maximally injected by the fuel injection pump. The adjustment device has a movable piston for this purpose disposed movably in a work bore. The circumference of the piston is formed as a cam and is scanned by a scanner determining the position of the full load stop. The movable piston is acted on one side by the fuel pressure in the suction chamber and on the other side by a spring and by the fuel pressure between the pressure control valve and the pressure valve. This results in a compensation of the fuel pressure force at the movable piston, which is caused by the pressure valve.

Abstract: This invention relates to a device for controlling the rate of delivery of a fuel-injection pump (2) for an internal-combustion engine. The device is composed of a tridimensional planar cam (8) mounted on a slider (40) which is movable axially as a function of the rpm of the pump, the end of stroke depending on the temperature of the engine. The cam (8), moreover, is movable transversely relative to the axis of the slider (40) as a function of a supercharge pressure of the engine.

Abstract: A control apparatus for an electrically controlled injection pump of a Diesel engine comprises a main controller for controlling valve opening durations of an injection quantity control solenoid valve and an injection timing control solenoid valve provided for the injection pump so that a desired quantity of fuel is supplied to the engine in an optimal injection timing and a sub-controller for controlling the injection pump in place of the main controller upon occurrence of failure of the latter. The sub-controller is constituted by an injection timing signal generator for preparing an injection timing control signal of a fixed duration applied to the timing control solenoid valve and an injection quantity signal generator for preparing an injection quantity control signal applied to the quantity control solenoid valve, which signal has a pulse width variable in dependence on a parameter representative of a desired operation state of the engine.

Abstract: A fuel-injected internal combustion engine wherein fuel is injected in dependence upon a quantity or volume of air supplied to the engine. A throttle valve controls the airflow rate with an O.sub.2 probe, arranged in an exhaust manifold, controlling a timing valve through a control device for enabling a timed relief of injection pressure of the fuel. An ignition starter switch is connected to the control device in such a manner that the timing valve is fully open during an operation of the ignition starter switch so as to enable a starting boost. An adjustable timing member is coupled to an operating switch provided in the control device, which operating switch closes automatically after a termination of the starting process. The timing member maintains the timing valve in a fully open position during a specific time span so as to provide for an after-start boost.

Abstract: A sensor detects the flow rate of fuel returned from an internal combustion engine to a fuel tank to control a pump motor in such a manner that an appropriate amount of fuel is supplied from the pump to the engine.

Abstract: An overspeed safety means for fuel injection pumps of internal combustion engines in which an electrically actuatable valve is retained by an electromagnet provided in an electrical circuit in an open, retracted position which assures the normal operation of the engine or of the fuel injection pump. The electrical circuit includes a destructable loop which is located adjacent to a device deflectable in response to centrifugal force; when this device is deflected into a position corresponding to a specific threshold rpm, it severs the loop in the circuit, thus closing the valve and terminating injection.

Abstract: A fuel injection rate limiting device for diesel engine aimed at improving engine performance on starting as well as in operation under overload through impartation of an increased tenacity, wherein a limiter means is provided to check a governor lever to thereby limit the fuel injection rate under the full-load condition but at the same time the governor lever is allowed to continue shifting within reason and gradually against a torque spring in such direction as to increase the fuel injection rate so that the fuel injection rate is gradually increased as the engine speed (rpm.) falls under overload. Moreover, on starting of the engine, the governor lever is caused to shift extensively against the torque spring as well as the starting spring in the fuel injection rate increasing direction for improvement of the engine's starting performance.

Abstract: In a process for controlling the beginning of delivery of a fuel injection pump for internal combustion engines having fuel injection, particularly Diesel engines, in dependence on the torque and under consideration of immediately measurable operation parameters, at least the revolution speed. The torque is determined from the intake boost pressure generated by a turbocharger and optionally from that amount of air which is blown off at increasing revolution speed above a certain intake boost pressure.A device for performing said process comprises a processor for performing at least one calculating operation provided with a store for storing the program to be executed, sensors transmitting signals to the processor representative of operation parameters of the injection-type internal combustion engine, and actuating means for controlling the beginning of fuel delivery of the fuel injection pump being connected with the processor.

Abstract: An electric governor for electrically controlling the fuel injection amount of a fuel injection pump has two engine speed detectors for producing engine speed indication signals. One of the two detectors produces the signal by using a gear coupled to the pump drive shaft and electromagnetic pickup, and the other of the detectors produces the signal by an output signal of an alternator. Normally the engine speed indication signal is selected from the electromagnetic pickup and used for control of the fuel injection amount, and the output signal of the alternator is used when the electromagnetic pickup generates does not generate the normal output signal.

Abstract: A fuel injecting device has a fuel pump and a fuel injector.

Abstract: A fuel injection advance apparatus comprising a rotational hub connected to a cam shaft of a fuel injection device, an engine-driven rotatable casing which is supported on the hub, eccentric cam assemblies located between the hub and the casing to adjust a relative angular position therebetween, a hydraulic piston having an inclined surface which is connected to an engine-driven pump, and slides having inclined surfaces corresponding to and contacting the inclined surface of the piston so that the axial movement of the piston is converted to the radial movements of the slides, said slides being connected to the eccentric pins.

Abstract: A method and apparatus for injecting timed pulses of fuel of variable quantity into a high speed compression-ignition engine.

Abstract: A fuel supply control device is disclosed wherein, as pressure of fuel from a fuel injection pump increases, a piston responsive to fuel pressure temporarily reduces or shuts off initial flow of fuel from the pump to a fuel injector through a series of fuel passageways. A second piston may be provided in a passageway to control movement of the first piston such that when the engine operates under relatively low loads at low speed, the second piston causes the first piston to restrict fuel flow. When the engine operates at relatively high speeds and high loads, the second piston cooperates with the first piston to feed fuel to the injector at high pressure.

Abstract: A shut-off device for a self-igniting internal combustion engine which is equipped with a fuel injection pump for injecting fuel into the combustion chambers. The fuel injection pump is equipped with a feed-quantity control member, which can be held in a rest position by a spring, as well as with a starting or ignition switch, which is arranged in the electrical energy circuit of the internal combustion engine. The feed-quantity control member, as a function of the position of the starting or ignition switch, remains in a first rest position, which corresponds to low idling, or in a second rest position, which corresponds to standstill of the internal combustion engine.

Abstract: An injection initiation adjuster for fuel injection pumps is proposed which includes a hydraulically actuated adjustment piston, whereby the actuation fluid is controllable via a control plunger disposed coaxially with the adjustment piston and this control plunger is electromagnetically adjustable.

Abstract: A fuel injection pump (100) including a plunger (2) and a piston (1) movably disposed in a pumping chamber (17), means for initiating (3, 5) fuel injection and means for terminating (13, 30, 29) fuel injection, the plunger periodically pressurizing fuel in a pressure chamber (44) and the piston (1) spaced from the plunger and allowing a metering chamber (16) to fill with a metered quantity of fuel to be injected to an engine. The means for initiating injection comprise a pilot valve (5) having a solenoid to selectively operate between either of two states and a spool valve (3) movable between first and second positions in response to the state of pilot valve (5), the first position filling the metering chamber with the metered quantity of fuel. The pilot valve (5) determines the fuel quantity to be delivered to the engine relative to a signal from an electronic controller. An accumulator (4) is pressurized during each cycle of the plunger to provide pressurized fuel during a metering phase.

Abstract: A fuel injection pumping apparatus includes a governor which controls the size of an orifice through which fuel is supplied to an injection pump to determine the amount of fuel supplied by the pump to an associated engine. The governor includes a piston which at one end is subjected to fuel pressure and which bears at its other end against a spring connected in series with a spring. The spring is weaker than the spring so that at idling speed it is the spring which balances the force acting on the piston. Manually operable means is provided to effect movement of an abutment disposed between the springs, the spring acting to determine the maximum speed of the associated engine. When the engine has been started from cold, it is desirable to provide additional fuel to enable the engine to idle properly and for this purpose a device represented by the arrow, moves the end of the spring remote from the spring and this provides a temporary increase in the amount of fuel supplied at idling speeds.

Abstract: A fuel system for a compression ignition engine comprises a plurality of injection nozzles controlled by electromagnetic devices to deliver fuel in timed relationship to an engine. Fuel for the nozzles is stored under pressure in accumulators which are charged from a source of fuel through small bore pipes so that the recharging of the accumulators after fuel delivery is delayed. Transducers are provided and are responsive to the pressure in the accumulators. The signals provided by the transducers register a pressure drop when fuel flows through the nozzles and the fall in pressure is related to the quantity of fuel supplied through the nozzle.

Abstract: There is proposed a fuel injection pump wherein the full load feed quantity is defined by a speed-dependent correction of the maximum full load quantity. The pump comprises a control device which acts on a stop lever via a stop piston. The stop lever receives the full load stop and determines the position of a flow quantity adjustment member. The stop piston is connected with a control diaphragm which separates a control chamber from a spring chamber and comprises a bore which is connected to the suction chamber of the pump and in which a control piston is provided so as to be slidable in opposition to the force of a control spring. The control chamber is connected to the suction chamber via a throttle orifice.