Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1983-05-27
1985-01-01
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Fuel injection system
123325, F02B 300
Patent
active
044911157
ABSTRACT:
A fuel supply control method for controlling the fuel supply to an internal combustion engine at deceleration, wherein the fuel supply to the engine is interrupted when the engine is operating in a predetermined operating region while it is decelerating. The fuel supply is interrupted when the engine is operating in either of the following operating conditions: (1) when the throttle valve is in a substantially fully closed position while the engine is decelerating; and (2) when the throttle valve is in a position other than the substantially fully closed position and simultaneously the engine is operating in a predetermined operating region determined by the engine rotational speed and another engine operation parameter relating to the intake air quantity of the engine, preferably, the intake passage pressure. Preferably, the above predetermined operating region of the engine is determined by the intake passage pressure which has different predetermined values between at fuel cut initiation and at fuel cut termination of the engine, and the difference between the above two different predetermined values of the intake passage pressure is set to vary in response to the rotational speed of the engine. Furthermore, the fuel cut operation is continued until the engine decelerates to predetermined rpm which is set in dependence upon the engine temperature.
REFERENCES:
patent: 3430616 (1969-03-01), Glockler
patent: 3703162 (1972-11-01), Aono
patent: 3735742 (1973-05-01), Aono
patent: 3736910 (1973-06-01), Raff
patent: 3747576 (1973-07-01), Gordon
patent: 4214307 (1980-07-01), Peterson
patent: 4371050 (1983-02-01), Ikeura
British Patent Application No. 2,006,336, Published 5/79; No. 2,075,119, Published 11/81; No. 2,098,754, Published 11/82.
Otobe Yutaka
Yamato Akihiro
Cox Ronald B.
Honda Giken Kogyo Kabushiki Kaisha
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