Robert Boschgmbh

Karl-Friedrich Ruesseler

Karl Konrath

Helmut Tschoeke

Wolfgang Braun

Achim Koehler

Sascha Ambrock

Claus Koester

Alfons Schoetz

Mohammad-Ali Khosrawi

Carlos Alvarez-Avila

Peter Bauer

Wolfram Von Huelsen

Heinz Northdurft

Wolf-Ruediger Walk

Ulrich Maier

The fuel injection device has a high-pressure pump () that supplies fuel to a reservoir and is connected to injectors disposed in the cylinders of the engine. A fuel-supply pump delivers fuel from a fuel tank to the suction side of the high-pressure pump. An electrically actuated control valve adjusts the quantity of fuel that the high-pressure pump delivers to the reservoir. The control valve is disposed on the pressure side of the high-pressure pump and can be switched between a first position, in which the pressure side of the high-pressure pump is closed off from a pressure relief region, and a second position, in which the pressure side of the high-pressure pump is connected to the pressure relief region.

Fuel injection device for an internal combustion engine

Fuel injection pump for internal combustion engines

A fuel injection pump for internal combustion engines having a fuel injection quantity adjusting device, in which by the imposition of a stepping motor and by varying a spring assembly at the adjusting device, not only can the starting and full-load injection quantities be controlled but the idling injection quantity can also be regulated as a function of engine operating parameters.

Motor vehicle components that function in accordance with the operating state of a fuel injection pump require a load signal from the pump that represents an accurate quantity relationship, so that they can function in a properly adapted manner. The accurate quantity relationship is attained in that initially, by mechanical means, two additional stops, temporarily lengthened by a spacer gauge, on the pump limit the rotation of an adjusting lever. The conversion into an electrical signal is effected via a potentiometer coupled to the adjusting lever, the characteristic curve of the potentiometer being effected in such a way, in a calibration process by means of laser trimming of two compensating resistors connected in series with the potentiometer, that the set-point voltages with which predetermined quantities are associated are attained at both stops. This reference voltage is suitable for triggering succeeding components of the fuel injection pump.

Method for adjusting a travel transducer

Growing community of inventors

Renningen, Germany

Karl-Friedrich Ruesseler