Engine air-fuel ratio controller

Details Engine air-fuel ratio controller Engine air-fuel ratio controller

1998-01-16

1999-11-23

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

701104, 701110, 477111, F02D 4104, B60K 4112

Patent

active

059881445

ABSTRACT:
In a vehicle engine, when an accelerator pedal is released and a vehicle speed has decreased after fuel injection by a fuel injector has stopped, a controller restarts fuel injection. An engine rotation speed decrease rate immediately prior to restarting fuel injection is calculated, and a restart fuel injection amount is set which is larger the larger the decrease rate. In this way, the torque generated by the engine quickly recovers even during rapid deceleration, while during gradual deceleration, the generated torque increases gradually so that a torque shock does not occur.

REFERENCES:
patent: 4416240 (1983-11-01), Matsuoka
patent: 4512321 (1985-04-01), Yamato
patent: 4558672 (1985-12-01), Boccadoro et al.
patent: 4655179 (1987-04-01), Kashiwagura
patent: 4667631 (1987-05-01), Kinugasa
patent: 5445131 (1995-08-01), Kusunoki et al.
patent: 5762043 (1998-06-01), Yoshioka et al.

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