Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – In vehicle wiring
Patent
1996-12-12
1999-10-26
Ballato, Josie
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
In vehicle wiring
324429, 324430, 324 731, 324601, 324102, G01R 3102
Patent
active
059734990
ABSTRACT:
A method for testing electrical loads in a vehicle electrical system is provided, in which the loads, which are fed by a vehicle battery, are selectively switched on and off. The load-specific current consumption in the switched-on state is determined and assessed in each case. The battery voltage is measured immediately before and shortly after the switching-off of a previously switched-on load in order to determine the load-specific current consumption value from the load-specific battery voltage difference. The internal resistance of the battery serves indirectly as the measuring resistance, which is determined by loading the battery with a known load on a trial basis.
REFERENCES:
patent: 4006319 (1977-02-01), Gartner
patent: 4207610 (1980-06-01), Gordon
patent: 4207611 (1980-06-01), Gordon
patent: 4290109 (1981-09-01), Taniguchi
patent: 4423379 (1983-12-01), Jacobs
patent: 4929931 (1990-05-01), McCuen
patent: 5337013 (1994-08-01), Langer
Ballato Josie
Daimler-Chrysler AG
Solis Jose M.
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