Method and apparatus for optimum control of internal combustion

Details Method and apparatus for optimum control of internal combustion Method and apparatus for optimum control of internal combustion

1982-01-20

1984-10-30

Lall, Parshotam S.

Internal-combustion engines

Charge forming device

Fuel injection system

123436, 123588, F02M 5100

Patent

active

044794762

ABSTRACT:
In a method and an apparatus for optimum control of an internal combustion engine, an air-fuel ratio is dithered by a dither amount from a basic air-fuel ratio and the engine is operated with the dithered air-fuel ratio. A resultant change of the output state of the engine is detected, and the direction of improving fuel consumption is decided by the change of the output state of the engine so that the basic air-fuel ratio is changed in that direction. Either the dither period during which the engine is operated with different selected air-fuel ratios or the dither amount is determined with elevated precision by a signal detected in association with the output state of the engine.

REFERENCES:
patent: 3596643 (1971-08-01), Schweitzer
patent: 4026251 (1977-05-01), Schweitzer et al.
patent: 4106451 (1978-08-01), Hattori et al.
patent: 4181944 (1980-01-01), Yamauchi et al.
patent: 4319451 (1982-03-01), Tajima et al.
patent: 4322800 (1982-03-01), Hisegawa et al.
patent: 4354238 (1982-10-01), Manaka et al.

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