Robert Boschgmbh

Heinz Northdurft

Wolfgang Braun

Karl-Friedrich Ruesseler

Wolfram Von Huelsen

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.

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Stuttgart, Germany

Heinz Northdurft