Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2007-03-06
2007-03-06
Wolfe, Jr., Willis R. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S406140
Reexamination Certificate
active
11260876
ABSTRACT:
A cylinder misfire control system for a displacement on demand (DOD) engine that is operable in an activated mode and a deactivated mode includes a sensor that is responsive to rotation of a crankshaft of the engine and a first module that calculates a time derivative based on a first time period associated with a first deactivated cylinder and a second time period associated with a second deactivated cylinder. The first and second time periods are based on the rotation of the crankshaft. A second module detects a misfire occurrence in an activated cylinder based on the time period derivative.
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Assaf Tameem K.
Mathews David S.
Moening Douglas J.
O'Daniel Gregory F.
DeVries Christopher
GM Global Technology Operations Inc.
Hoang Johnny H.
Wolfe, Jr. Willis R.
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