Air-fuel ratio controller

Details Air-fuel ratio controller Air-fuel ratio controller

1998-02-11

2000-07-25

Yuen, Henry C.

Internal-combustion engines

Charge forming device

Including means responsive to instantaneous change in engine...

123492, F02M 700

Patent

active

060925086

ABSTRACT:
A basic fuel injection amount is calculated according to an engine running state, and a fuel injection amount based on the basic fuel injection amount is injected by a fuel injector in synchronism with the engine rotation. An increase of an intake air amount is also estimated from when synchronous injection starts to when the engine intake stroke is complete. The fuel injector is controlled so that a fuel amount corresponding to this increase is asynchronously injected relative to the engine rotation. In this way, the fuel injection amount immediately increases when there is an increase of intake air amount during synchronous injection, and engine acceleration performance is improved.

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