Fuel control apparatus for an engine

Details Fuel control apparatus for an engine Fuel control apparatus for an engine

1986-07-16

1988-06-07

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123400, F02M 5100

Patent

active

047489561

ABSTRACT:
The control of a quantity of supply fuel to allow the air-fuel ratio of a gas mixture to be a target air-fuel ratio is conducted by switching between an open loop control and a feedback control using an air-fuel ratio sensor, in response to an operating state of the engine. At the time of the feedback control, a learning correction is carried out using a learning value calculated on the basis of the feedback correction value. At the time of the open loop control, the quantity of the supply fuel is corrected in accordance with the feedback correction value and the learning value immediately before shifting from the feedback control to the open loop control.

REFERENCES:
patent: 4461261 (1984-07-01), Isomura et al.
patent: 4467770 (1984-08-01), Arimura et al.
patent: 4497296 (1985-02-01), Nakajima et al.
patent: 4552116 (1985-11-01), Kuroiwa et al.
patent: 4561400 (1985-12-01), Hattori
patent: 4602601 (1986-07-01), Kanai
patent: 4625699 (1986-12-01), Kobayoshi et al.
patent: 4627402 (1986-12-01), Saito et al.
patent: 4644921 (1987-02-01), Kobayoshi et al.
patent: 4664086 (1987-05-01), Takeda et al.

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