System and method for monitoring engine performance characteristics
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United States of America Patent
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-
Aug 10, 1999
Grant Date -
N/A
app pub date -
Dec 31, 1997
filing date -
Dec 31, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system and method for monitoring engine performance characteristics such as knock and misfire. The system includes a pressure sensor coupled to an exhaust manifold of an engine being monitored by the system, a motion sensor operatively coupled to the engine's block, an engine position sensor, a load sensor and a processor adapted to independently process the outputs of the pressure sensor and the motion sensor to determine an occurrence of a knock event. The outputs of the pressure sensor and engine position sensor are processed to identify which cylinders are knocking. The outputs of the pressure sensor, load sensor and engine position sensor are processed to determine an occurrence of a misfire condition and to identify which cylinders are misfiring.
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