Robert Boschgmbh

Ilija Djordjevic

Ernst Ritter

Max Straubel

Reinhard Schwartz

Thomas Lang

Heinrich Staudt

Werner Br/u/ Hmann

Hansj/o/ Rg Frey

Hans-Jurgen Jaenke

Reinhard Doll

The governor (FIG. 1) includes a second idling spring (supplementary idling spring 42) secured on a force transmission lever (31) acted upon by the main governor spring (34). By means of the second idling spring, the restoring force of a first idling spring (38) on a portion of the idling sleeve path (a) is reinforced in the idling position of an adjusting member (22). This exertion of force on the part of at least the supplementary idling spring (42) is increased in accordance with load by means of a corrective adjusting member (44) when the adjusting member (22) has pivoted into a partial-load position. As a result, in order to improve the starting behavior even in minimum-maximum speed governors, a partial-load rpm located above the idling rpm can be regulated, and a progressively increased supply quantity is controlled at the associated injection pump with increasing load in the lower partial-load range.

Rpm Governor for fuel-injected internal combustion engines, in

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. The control piston is pushed by the fuel pressure in the suction chamber in opposition to the control spring and it closes with a control edge a control opening in the stop piston such that the pressure in the control chamber increases and the control diaphragm with the piston is moved against the force of a work spring until the control edge opens the control opening and fuel is allowed to flow via an annular channel from the control chamber to the spring chamber.

Fuel injection pump for internal combustion engines

An apparatus is proposed for positionally fixing a drive shaft disposed in a fuel injection pump for internal combustion engines in a predetermined rotary position, in particular one associated with the onset of fuel supply, and for measuring and testing this rotary position. The apparatus is provided with an apparatus into the reception bore of which either a holder element or an electric pulse transducer can be inserted. An element firmly connected with the drive shaft is provided with an angle-indicator marking, which is equipped both as a coupling element for the position-fixing apparatus and as a pulse trigger for the pulse transducer. The apparatus can thus be used both as a locking apparatus for mounting the injection pump on the engine and, with the pulse transducer inserted, as a measurement and testing apparatus.

Apparatus for positionally fixing a drive shaft disposed in a fuel

A method is proposed in which the injection pump, having been adjusted in terms of the supply quantity and of the supply onset, is provided on a test bench, before being mounted on the internal combustion engine, with an electric pulse transducer, whose mounted position is marked on the injection pump. The pump may also be corrected, at a fixed test rpm, to a set-point value fixed relative to the supply onset signal by means of measuring the signal distance between the supply onset signal of a signal transducer measuring the dynamic supply onset and the rotary-position signal of the pulse transducer. The injection pump, with the camshaft rotated into the rotary position associated with the dynamic supply onset, is mounted on the engine which has been brought with its crankshaft into the associated working position. For testing and if needed correcting the mounted position of the injection pump on the engine, only the signal distance between the rotary-position signal and a dead-center signal of a dead-center transducer secured on the engine is tested and corrected if needed to a fixed set-point value. This measurement can be performed with a conventionally available ignition angle testing device.

Method for angularly correct mounting of a fuel injection pump on an

A centrifugal governor for fuel injected internal combustion engines is proposed, especially an idling and final rpm governor for Diesel vehicle engines, in which the sudden emission of smoke upon starting of a heavily loaded engine is prevented. The improved governor comprises an additional idling spring secured on a force transmitting lever which is acted upon by the main control spring and by means of which additional idling spring in the idling setting of the service lever the restoring force of the idling spring on a portion (b) of the idling sleeve path (a) is amplified. This force of the additional idling spring is, however, made at least partially ineffective by a thrust member when the service lever is pivoted into the full-load position. Further, there is disclosed a governor which is equipped with an additional idling spring which comprises two additional springs, the aforementioned thrust member being arranged to act only upon the second additional spring, while the first additional spring remains coupled with the governor sleeve via a connecting member in order to improve starting.

Centrifugal rpm governor for fuel injected internal combustion engines,

A centrifugal rpm governor is proposed for fuel injected internal combustion engines in which the full-load supply quantity is precisely settable at a fixed and invariable full-load setting and a predetermined constant pivot angle of the setting member actuated by the service lever. The governor includes an intermediate lever that is coupled with the supply quantity adjustment member of the injection pump, which intermediate lever is engaged both by a control member that is moved by flyweights in accordance with rpm and a setting member pivotable for the purpose of arbitrarily varying the supply quantity. The setting member and the control member both are articulated on the intermediate lever via a shift lever connecting both members, and the intermediate lever is provided with a pivotal bearing adjustable in the governor housing solely for the purpose of accomplishing the basic setting of the full-load supply quantity. The pivotal bearing serves simultaneously as a deflection member in order to prevent an overload of the control rod during an undergoverning situation.

Centrifugal RPM governor for fuel injected engines

The invention relates to a fuel regulator for internal combustion engines provided with a fuel injection system and with an adjusting member that operates preferably in dependence on the rpm, which moves the control rod of the fuel metering system via an intermediate lever. The intermediate lever is mounted on the pin of a bell-crank and effects an independent movement of the fuel control rod. The controller further includes a correcting device through which the position of the pin and thus the position of the fuel control rod can be changed independently and as a function of at least one operational variable, preferably the atmospheric pressure.

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Stuttgart, Germany

Ilija Djordjevic