Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2008-01-22
2008-01-22
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
C701S104000, C701S108000, C123S480000, C123S568160, C123S568210
Reexamination Certificate
active
07321820
ABSTRACT:
An engine control system that having an exhaust gas recirculation (EGR) valve includes a first module that determines an EGR error and a second module that calculates a fuel injection timing based on the EGR error. Operation of an engine is regulated based on the fuel injection timing to reduce emissions during transient operation of the engine.
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El Tahry Sherif H.
Lin Chan-Chiao
Yanakiev Ognyan N.
GM Global Technology Operations Inc.
Wolfe, Jr. Willis R.
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