Method and apparatus for determining a parameter for...

Details Method and apparatus for determining a parameter for... Method and apparatus for determining a parameter for...

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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