Internal combustion device

Details Internal combustion device Internal combustion device

1993-10-20

1995-08-08

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Idle speed control

12333924, F02M 300

Patent

active

054389674

ABSTRACT:
An internal combustion engine having a combustion chamber, an intake passage and an exhaust passage, includes a fuel injector for feeding fuel to the engine and purge control apparatus for controlling the feeding of fuel vapor into the engine. The idling speed of the engine is controlled by adjusting a fuel injection operation and a purging operation while the engine is idling. The purging operation is carried out continuously while the engine is idling. A quantity of fuel which, in addition to the fuel vapor fed to the engine, is required to maintain an idling speed of the engine at a desired idling speed is calculated. The fuel injector is then controlled so that the required additional quantity of fuel is fed to the engine. When the required additional quantity of fuel becomes smaller than a predetermined minimum fuel injection amount, the fuel injection operation is stopped.

REFERENCES:
patent: 4344398 (1982-08-01), Ikeura
patent: 4683861 (1987-08-01), Breitkruez et al.
patent: 5203300 (1993-04-01), Orzel
patent: 5261368 (1993-11-01), Umemoto
Copending U.S. application Ser. No. 795,979, filed Nov. 22, 1991.

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