Internal-combustion engines – Combustion chamber means having fuel injection only – Using multiple injectors or injections
Reexamination Certificate
2006-01-31
2006-01-31
Huynh, Hai (Department: 3747)
Internal-combustion engines
Combustion chamber means having fuel injection only
Using multiple injectors or injections
C123S443000, C701S103000
Reexamination Certificate
active
06990951
ABSTRACT:
A compression ignition engine (10) for a motor vehicle has a control system (20) for processing data, one or more combustion chambers (12), and fuel injectors (18) for injecting fuel into the chambers. The control system controls lean-rich modulation of fueling using independent maps. One set of maps is a set of lean fueling maps, and another set is a set of rich fueling maps. The strategy is represented by a flow diagram (30) and is useful in regenerating a NOxadsorber catalyst (16) in the engine exhaust system (14) in a manner that controls torque so that the regeneration process is transparent to the operator of the vehicle.
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Liu Zhengbai
Wei Puning
Calfa Jeffrey P.
Huynh Hai
International Engine Intellectual Property Company LLC
Lukasik Susan L.
Sullivan Dennis Kelly
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