Robert Boschgmbh

Other

Franz Eheim

Gerald Hofer

Karl Konrath

Helmut Laufer

Otmar Weiss

Max Straubel

Edgar Schmitt

Werner Faupel

Manfred Schwarz

Wilfried Bohringer

Edgar Gotz

Konrad Eckert

Wolfgang Fehlmann

Odon Kopse

Ilija Djordjevic

Ewald Eblen

Wolfgang Geiger

Gregor Schuster

Richard Kinzel

Claus Koster

Werner Stadler

Heinz Links

Willi Voit

Heins Links

Ilja Djordjevic

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.

Fuel injection pump for internal combustion engines

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.

Controlling device for a fuel-quantity adjusting member of a fuel

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.

Regulator apparatus for a fuel injection pump

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.

Fuel injection pump speed governor

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.

Fuel injection system for self-igniting internal combustion engines

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 interengagement of the injection element and the control element and reestablishment of said aligned position after separation of the housings. The housings may, also, be spot-welded at selected points beyond break-away zones so that, upon breaking away of the spot welds, they can be separated, with subsequent re-alignment based on the break-away zones.

Fuel injection pump structure for an internal combustion engine

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.

Fuel injection pump for internal combustion engines with an adjustment

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.

Fuel injection pump

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.

Device for adjusting the full-load injection quantity of a fuel

A speed governor of a fuel injection pump for internal combustion engines is proposed, having a governor lever for adjusting the fuel injection quantity and a governor spring assembly engaging the governor lever counter to which assembly an rpm-dependent force acts. To compensate for manufacturing tolerances in the governor spring assembly, it is proposed that the effective length of a prestressed governor spring in the governor spring assembly be effected by means of the rotation of a spring plate, in that the spring plate has a sleeve provided with an outer thread, onto which part the governor spring can be threaded. After the rotation of the spring plate, this plate is held in its terminal position, under the influence of the initial stressing force of the governor spring, in a positively engaged connection with intermeshed components which limit the relieving of the governor spring assembly in the other direction.

Governor for fuel injection pump

A fuel injection apparatus for supplying fuel to an internal combustion engine is proposed. The fuel injection apparatus includes a pump work chamber enclosed within a pump housing, which work chamber is defined at one end by an axially displaceable and rotatable pump piston. The pump work chamber can be made to communicate, during the intake stroke of the pump piston, with a fuel inlet conduit via an electromagnetically actuatable metering valve and a check valve. The metering valve and check valve are combined into a common valve housing and are disposed in the immediate vicinity of the pump work chamber.

Fuel injection apparatus for internal combustion engines

A fuel injection pump for Diesel engines in which a rotating and reciprocating piston pressurizes and distributes fuel to individual pressure lines leading to the injection valves of the engine. In order to change the timing of injection with respect to the engine cycle, there is provided a mechanism to change the relative angle between the pressurizing piston and its drive means, which runs in synchronism with the engine. The mechanism operates hydraulically and is affected by the fuel pressure in the sump of the injection pump. There is also provided a hydraulic control valve mechanism which permits varying amounts of fuel to flow back from the sump to the low pressure side of the fuel delivery pump, thereby changing the injection timing. A primary control valve adjusts the sump pressure on the basis of engine speed while a secondary control valve adjusts the sump pressure on the basis of engine temperature in order to adapt the timing of fuel injection to engine starting and engine warm-up. Various embodiments are presented.

A fuel injection pump is proposed, which has a centrifugal governor disposed in the suction chamber of the fuel injection pump, the governor having a sleeve displaceable on a piston, and a pressure chamber enclosed in the interior of the governor sleeve, the latter being defined by the end face of the piston. By means of a relief line of the pressure chamber which is opened in the offset position of the governor sleeve, the restoring force on the centrifugal governor is increased during starting by the amount of the pressure difference appearing at the governor sleeve. Beyond a predetermined adjustment of the governor sleeve, the relief line is blocked, so that the governor can function unhindered within the normal operational range. The hysteresis thus resulting upon the shut-off of the increased starting quantity improves the behavior of the engine as it runs up to operational speed.

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Stuttgart, Germany

Franz Eheim