Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2007-02-27
2007-02-27
Nguyen, Tu M. (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
By means producing a chemical reaction of a component of the...
C060S274000, C060S278000, C060S285000, C060S301000, C123S295000, C123S681000, C701S103000, C701S116000
Reexamination Certificate
active
10812466
ABSTRACT:
A torque compensation method for controlling a direct-injection gasoline engine during regeneration of a lean NOx trap disposed in an exhaust path of the engine determines a desired torque in accordance with driver demands, cruise control settings or idle control. An estimate of torque loss attributable to stratified to homogeneous transitioning to effect the regeneration is determined and a compensating control torque to the engine is provided in an amount sufficient to compensate for the estimated decrease in engine torque to thereby maintain the desired torque level during the lean NOx trap regeneration.
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General Motors Corporation
Marra Kathryn A.
Nguyen Tu M.
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