Engine control apparatus

Details Engine control apparatus Engine control apparatus

1997-11-03

1999-09-07

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123696, F02D 4114

Patent

active

059470984

ABSTRACT:
An engine control apparatus in which it is possible to suppress variation of the A/F ratio due to variation of the fuel pressure and for the A/F ratio to converge in a very short time when continuous variation of the increase and decrease of the fuel pressure based on an operation state is performed in the A/F ratio control of an engine. The engine control apparatus sets a target fuel pressure based on an operation state, detects fuel pressure and controls fuel pressure to the target fuel pressure. An integration component of the feedback coefficient of the A/F ratio is corrected when at least one of the target fuel pressure and the detected fuel pressure is varied. Fuel injection amount is calculated based on the detected amount of intake air, the target A/F ratio and the feedback coefficient of the A/F ratio.

REFERENCES:
patent: 4825838 (1989-05-01), Osuga et al.
patent: 4827937 (1989-05-01), Kohler et al.
patent: 5579738 (1996-12-01), Frischmuth et al.
patent: 5771861 (1998-06-01), Musser et al.
patent: 5775304 (1998-07-01), Kono et al.

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