Engine control apparatus

Details Engine control apparatus Engine control apparatus

1996-10-02

1999-10-05

Argenbright, Tony M.

Internal-combustion engines

Spark ignition timing control

Electronic control

123680, 123683, 123686, 123687, F02D 4106, F02D 4114, F02P 515

Patent

active

059607734

ABSTRACT:
When feedback control of air/fuel ratio is not being performed in an engine and the engine is idling, the fuel supply amount is increased according to the engine coolant temperature. When feedback control of air/fuel ratio is not being performed and the engine is not idling, the fuel supply amount is decreased according to the engine coolant temperature. Due to this decrease correction, during the time period from when idling operation is terminated directly after starting the engine to when the feedback control of the air/fuel ratio is started, the air/fuel ratio is made lean at an early stage, and the oxygen concentration in the engine exhaust gas is increased, so that the conversion of HC by the catalyst is quickly started.

REFERENCES:
patent: 4445482 (1984-05-01), Hasegawa et al.
patent: 4528956 (1985-07-01), Ogata et al.
patent: 4576134 (1986-03-01), Yamato et al.
patent: 4926828 (1990-05-01), Fujimoto et al.
patent: 5211011 (1993-05-01), Nishikawa et al.
patent: 5383432 (1995-01-01), Cullen et al.
patent: 5483946 (1996-01-01), Hamburg et al.
patent: 5685283 (1997-11-01), Nishioka et al.

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