Fuel-injection control device for internal-combustion engine

Details Fuel-injection control device for internal-combustion engine Fuel-injection control device for internal-combustion engine

2011-04-05

2011-04-05

Denion, Thomas E (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S276000, C060S274000, C060S277000

Reexamination Certificate

active

07918085

ABSTRACT:
A fuel injection control device performs fuel injection only once corresponding to an over-rich air/fuel ratio immediately after the end of F/C as rich air/fuel ratio control after F/C. Such fuel injection is performed with a fuel amount which is the sum of a fuel amount corresponding to a shallow rich air/fuel ratio AFrich and a predetermined increment. Immediately after this operation, fuel injection is performed with a fuel amount corresponding to the shallow rich air/fuel ratio AFrich. This adjusts the air/fuel ratio of the engine to the over-rich air/fuel ratio for an extremely short period of time immediately after the end of F/C, following which the air/fuel ratio is immediately switched to the shallow rich air/fuel ratio AFrich.

REFERENCES:
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