Method for detecting a motor vehicle battery failure
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United States of America Patent
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-
Oct 29, 2002
Grant Date -
N/A
app pub date -
May 26, 2000
filing date -
Oct 1, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for the detection of a defect of an automotive vehicle battery includes analyzing the time dependence of the discharge voltage across the terminals of the battery. This process has the steps of measuring at least two successive values of the discharge voltage of the battery, during the phase of cranking the engine of the automotive vehicle, for at least two consecutive top dead center points, taking a difference of the measured voltage values, and deducing therefrom whether the battery is charged or defective. The process is built into an electronic computer carried on board the automotive vehicle.
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