Measuring and testing – Internal combustion engine or related engine system or... – Compression
Patent
1989-03-22
1990-04-03
Raevis, Robert R.
Measuring and testing
Internal combustion engine or related engine system or...
Compression
G01M 1500
Patent
active
049129686
ABSTRACT:
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.
REFERENCES:
patent: 3854464 (1974-12-01), Reinhard
patent: 4192272 (1980-03-01), Lang et al.
patent: 4353340 (1982-10-01), Straubel et al.
patent: 4557140 (1985-12-01), McFarland
Braun Wolfgang
Northdurft Heinz
Ruesseler Karl-Friedrich
von Huelsen Wolfram
Greigg Edwin E.
Raevis Robert R.
Robert & Bosch GmbH
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