Abstract: A fuel injection pumping apparatus comprises a rotary distributor member which is also axially slidable within a fixed sleeve. The distributor member is provided with a recess which communicates with a bore containing the pumping plungers. The recess is provided with mutually inclined leading and trailing edges which cover and uncover inlet ports and outlet ports as the member rotates. While an inlet port is in communication with the recess fuel is allowed to flow to the bore and when the inlet ports are covered and outlet port is uncovered to the recess fuel flows from the bore to the uncovered outlet port. The fuel quantity is varied by altering the axial position of the distributor member.

Abstract: An rpm governor of a fuel injection pump for internal combustion engines is proposed. The rpm governor includes a governor spring, which at one end engages a governor lever of the fuel injection pump and at the other end engages a correction lever. The other end of the correction lever is engaged by a correction spring, which is coupled at its other end with an adjusting member secured eccentrically relative to an adjusting shaft on an adjusting lever. The adjusting lever is connected with the adjusting shaft and is variable in its position by means of this shaft. The correction lever is supported between a roller and an adjusting gear wheel, which engages a rack zone of the correction lever. By rotating the adjusting gear wheel, the lever arms associated with the governor spring and the correction spring can be varied, thus varying the resultant spring force or spring constant engaging the governor lever in order to establish the degree of proportionality of the rpm governor.

Abstract: In a distributor type fuel injection pump of the type including a plunger arranged for reciprocating and rotative motion, and a fuel injection quantity setting member slidably fitted on the plunger and engageable with a cut-off port formed in the plunger and communicating with a pump working chamber, a second cut-off port is formed in the plunger in communication with the pump working chamber, which opens in an outer peripheral portion of the plunger with which the fuel injection quantity setting member permanently slidably engages, and a plurality of spill ports formed in the setting member in a circumferentially spaced relation, which are smaller in number than the cylinders of an engine for use with the pump. When the plunger moves through each delivery stroke in a low engine load region, the second cut-off port engages each one of the spill ports successively to cause injection of fuel into only part of the engine cylinders.

Abstract: A fuel injection pump, for internal combustion engines, wherein a fuel distributing plunger moves angularly and axially in synchronism with the rotation of the engine and which cooperates with a control sleeve which determines the beginning or termination of injection into the cylinders. The control sleeve is controlled by an electrical motor through the motor's rotating shaft which is biased by an urging device circumferentially. The motor shaft is rotated to a predetermined position where the amount of injected fuel becomes small enough to keep engine operation safe if the motor output force exerted on the motor shaft disappears owing to a defect occurring.

Abstract: A distribution type fuel injection apparatus has a fuel injection pump having a solenoid valve for controlling pressure of a high-pressure chamber of the apparatus. The solenoid valve is actuated or deactuated at the optimum time for fuel injection end or beginning by a control signal produced by a circuit for computing the optimum timing in accordance with the condition of engine operation. Thus, precise control of injection timing or injection amount injected can be attained by electronic control without a complex mechanical structure.

Abstract: The invention relates to a fuel injection pump wherein the fuel delivery to the engine is interrupted by means of a magnet. To this end, the magnet engages the governor lever at least indirectly, the governor lever is also arranged to engage the rpm governor of the fuel injection pump and further being coupled in a force-locking manner with the fuel quantity contorl member.

Abstract: A fuel injection pump for an air-compressing fuel injected internal combustion engine with a pump piston arranged in a pump cylinder and controlling a fuel control bore in the pump working chamber and with a control element in constant connection with the pump piston for the purposes of fuel control. The control element is constructed so that it constantly connects the pump working chamber to an intermediate chamber located above the control element and serving as a reservoir. The control element connects the pump working chamber and the pump pressure chamber by way of a bore arrangement only during a piston stroke. An arrangement is provided by which the communication between the pump working chamber and pump pressure chamber is temporarily interrupted during the piston stroke in such a way that, prior to the interruption, a variable preliminary injection quantity is conveyed and, after the interruption, a principal injection quantity is fed.

Abstract: A fuel injection pump for an internal combustion engine including a low pressure sump and a sump piston, reciprocating in a cylinder, for imparting elevated pressure to the fuel for delivery to injection valves. The pressure chamber in the pump cylinder can be opened to the sump at some adjustable point of the piston stroke to limit fuel delivery. A secondary conduit between the pressure chamber and the sump includes a flow throttle that variably restricts the return flow of fuel as adjusted by fluid pressure which is regulated by a secondary fuel control mechanism. This mechanism is subject to closed-loop control via an air flow rate meter disposed in the induction tube and also acts as a limiting stop for the baffle plate of the air flow rate meter.

Abstract: In fuel injectors of the type which include a rotating plunger (12) having a double helix, or "double scroll", control edges (62, 64), a control edge configuration is disclosed which improves the starting characteristics of certain internal combustion engines. A starting groove (76) and a starting projection (78) are provided in the control edges (62, 64) which simultaneously greatly increase the amount of fuel injected into the combustion space and retard engine timing. Also provided is a control mechanism (92-96) which prevents the injectors from accidently or intentionally rotating to the start position when the engine is running.

Abstract: A fuel injection pump is disclosed for supercharged Diesel internal combustion engines, in particular, a distributor-type injection pump in which the full-load fuel supply quantity is limited by means of a variable stop, controlled in accordance with rpm and air quantity. The injection pump includes a control apparatus whose control member forms a three-dimensional cam, which is rotated by a charge pressure control element and is displaced in the longitudinal direction by a hydraulic adjustment piston actuated in accordance with the rpm level. The three-dimensional surface of the cam includes protuberances whose profile is picked up and transmitted to a full-load stop of an rpm regulator located in an interior chamber of the injection pump, while the adjustment piston, in abutting relationship with the three-dimensional cam, is actuated for axial movement by the pressure of the fuel located in the interior chamber of the pump, and controlled in accordance with rpm.

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: A fuel injection pump for a compression-ignition engine includes a cylinder having a bore therein and a pump piston which is mounted not only to reciprocate within the bore past a fuel supply port but also rotate therewithin. The pump piston has upper and lower control surfaces which each have a bowed shape. The center or centers of the control edges lies or lie above them, and in the region between the upper part loads and full load in the direction towards full load the upper control edge has a rising shape while the lower control edge has a falling shape. The lower control edge, by comparison with the remainder of its extent falls progressively less steeply towards full load and the upper control edge rises increasingly steeply, so that the compensation of delivery in accordance with speed is achieved predominantly by the upper control edge and there is obtained a speed-dependent advance of the start of delivery.

Abstract: In an rpm regulator for fuel injection pumps of internal combustion engines having a starting lever, which is coupled on one side with a delivery quantity adjustment member of the injection pump and on the other side of which an rpm tachometer contacts the starting lever with an rpm-dependent force counter to an arbitrarily variable force of a main regulator spring and also counter to the force of a starting spring which is included in series with the main regulator spring and deformable up to a particular stop, it is proposed to provide a further stop which urges the starting lever counter to the direction urged by the starting spring, whereby this second stop is adjustable in accordance with the temperature in order to regulate the starting quantity. The temperature of the coolant, of the lubrication oil, as well as that of a housing wall of the internal combustion engine may be employed for this purpose.

Abstract: A fuel injection pump has a barrel with a central bore communicating through axially staggered fuel inlet and outlet ports with an outer peripheral recess in the barrel which, in cooperation with a fuel pump housing, forms an annular fuel receiving cavity about the pump barrel. A relatively large fuel reservoir in the housing communicates with the annular cavity through fuel inlet and outlet conduits in the housing, the outlet conduit being aligned with the outlet port in the pump barrel. A plunger having a scroll surface at one end is rotatably and reciprocably received in the pump barrel bore, and the scroll surface is selectively registrable with the fuel ports. A pulse shield of hardened material is disposed within the fuel reservoir in alignment with the fuel outlet conduit to deflect fuel from the outlet conduit into the main portion of the reservoir and to prevent erosion of the housing surfaces.

Abstract: A distribution type fuel injection pump comprising a plunger and a control sleeve slidably mounted on the plunger. The plunger reciprocally moves along its axis while at the same time rotating about same. The control sleeve is rotated about the plunger at the time of the starting operation of an engine. A groove is formed on the cylindrical inner wall of the control sleeve. A plurality of radial passages connected to the compression chamber of the plunger is formed in the plunger. Each of the radial passages is arranged so as to face the groove of the control sleeve at one time per one revolution of the plunger. At the time of starting the engine, the radial passages are connected to the groove of the control sleeve in the suction stroke for increasing the quantity of the fuel to be injected. Contrary to this, the radial passages are connected to the groove of the control sleeve at the beginning of the delivery stroke slightly after the engine has been started.