Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2008-12-19
2011-10-04
Tran, Binh Q. (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
By means producing a chemical reaction of a component of the...
C060S274000, C060S285000, C060S301000, C060S303000
Reexamination Certificate
active
08028515
ABSTRACT:
An engine exhaust controlling device is provided, including a controller for detecting whether or not a request is present for activating a catalyst when the engine is started, and whether or not a fuel pressure meets or exceeds a predetermined pressure. When a request is not present, the engine is operated in a homogeneous combustion mode in which fuel is injected during the intake stroke and ignition occurs before compression top dead center. When a request is present, an intake valve characteristic is adjusted to be larger than when the request is not present. If the fuel pressure is not greater than or equal to the predetermined fuel pressure, the engine is operated in the homogeneous combustion mode, otherwise, the engine is operated in a retarded combustion mode in which the ignition timing is retarded to ignite the fuel-air mixture after compression top dead center.
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Drinker Biddle & Reath LLP
Nissan Motor Co,. Ltd.
Tran Binh Q.
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