System operable to control exhaust gas emission of engine

Details System operable to control exhaust gas emission of engine System operable to control exhaust gas emission of engine

2011-08-23

2011-08-23

Denion, Thomas E (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

Having means analyzing composition of exhaust gas

C060S285000, C060S299000, C123S326000

Reexamination Certificate

active

08001765

ABSTRACT:
A system operable to control an exhaust gas emission of an engine, includes a catalytic converter; a fuel cutter, a change executor, a correlation value provider, an adjuster, and a controller. The change executor is operable to execute changing of an air-fuel ratio of the engine to a rich air-fuel ratio after the fuel supply is once stopped by the fuel cutter and then resumed. The correlation value provider is operable to provide a correlation value correlated to a change amount of the air-fuel ratio caused by the change executor based on a driving condition of the engine. The adjuster is operable to adjust the correlation value based on a parameter indicative of a capability of the catalytic converter. The controller is operable to cause the change executor to execute the changing based on the adjusted correlation value.

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