Determining engine cylinder contribution from indexed engine data
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United States of America Patent
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-
Jan 30, 2007
Grant Date -
Nov 10, 2005
app pub date -
May 7, 2004
filing date -
May 7, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An engine diagnostic system is provided that enables a service technician to evaluate engine cylinder contribution to output power. The service technician couples one or more signal leads to the vehicle's battery, alternator, or accessory receptacle (e.g., cigarette lighter receptacle) to provide an alternator output signal to a signal analyzer. The signal analyzer processes the alternator output signal to generate an engine signature, which represents engine cylinder contribution to engine output power.
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