IN-CYLINDER PRESSURE DETECTION DEVICE FOR INTERNAL COMBUSTION ENGINE
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United States of America Patent
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Issued Date -
Aug 13, 2015
app pub date -
Oct 15, 2013
filing date -
Oct 16, 2012
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
This invention determines whether or not an internal combustion engine is not performing combustion. If the determined result is that the internal combustion engine is not performing combustion, a maximum in-cylinder pressure Pmax during motoring is identified by an in-cylinder pressure sensor, and a crank angle θPmax corresponding to the maximum in-cylinder pressure Pmax is detected by a crank angle sensor. Further, a reference crank angle θPmaxtgt corresponding to the engine speed and the engine load factor is identified, and θPmax is corrected so as to become θPmaxtgt. Furthermore, the relation between a signal of the crank angle sensor and a crank angle (measured value) corresponding to the signal is corrected so that a measured value of the crank angle corresponding to Pmax becomes the post-correction crank angle.
First Claim
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