Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2008-03-05
2010-10-26
Cronin, Stephen K (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S435000, C073S114280
Reexamination Certificate
active
07822529
ABSTRACT:
Operation of an internal combustion engine selectively operative in a controlled auto-ignition combustion mode is monitored. The engine is equipped with a pressure sensing device operative to monitor in-cylinder pressure. An analog signal output from the pressure sensing device is monitored during a combustion cycle. A peak cylinder pressure and a corresponding crank angle are detected and captured during the combustion cycle. A state for a combustion parameter for the cylinder for the combustion cycle is determined based upon the peak cylinder pressure and the corresponding crank angle.
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Brown Alan W.
Dagci Oguz H.
Kang Jun-Mo
Castro Arnold
Cronin Stephen K
GM Global Technology Operations Inc.
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