System and method for controlling vehicle operation

Details System and method for controlling vehicle operation System and method for controlling vehicle operation

2006-03-06

2009-02-10

Restifo, Jeffrey J (Department: 3618)

Motor vehicles

Power

Electric

C180S065800, C903S945000, C123S406440

Reexamination Certificate

active

07487852

ABSTRACT:
A hybrid vehicle propulsion system is disclosed comprising an engine having at least one combustion cylinder configured to operate in a first and a second combustion mode, wherein the first combustion mode is a spark ignition mode and the second combustion mode is a compression ignition mode, wherein the engine is configured to supply an engine output; a motor configured to selectively supply or absorb a secondary output; an energy storage device configured to selectively store at least a portion of the engine output and selectively supply energy to the vehicle; a lean NOx trap configured to store NOx produced by the engine; and a controller configured to control at least the engine, the motor, and the energy storage device, wherein the controller is configured to selectively operate said at least one combustion cylinder in one of the spark ignition mode and the compression ignition mode based on a condition of the lean NOx trap.

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