Air-fuel ratio control system for internal combustion engines

Details Air-fuel ratio control system for internal combustion engines Air-fuel ratio control system for internal combustion engines

1983-01-19

1984-10-23

Lall, Parshotam S.

Internal-combustion engines

Charge forming device

Fuel injection system

123589, F02M 5100

Patent

active

044781911

ABSTRACT:
In an air-fuel ratio control system for internal combustion engines, an electronic control unit supplies a drive signal to an air-fuel ratio actuator in response to signals from an oxygen sensor and a heavy load sensor. The electronic control unit holds the air-fuel ratio compensation signal to a predetermined value when the heavy load sensor detects that a predetermined time has not passed since the engine enters a heavy load condition, and changes the air fuel ratio compensation signal to a predetermined value associated with the rich mixture when it is detected that the predetermined time has passed.

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patent: 4143623 (1979-03-01), Norimatsu et al.
patent: 4229105 (1980-12-01), Ito et al.
patent: 4252098 (1981-02-01), Tomczak et al.
patent: 4359029 (1982-11-01), Furuhashi et al.
patent: 4392471 (1983-07-01), Miyagi et al.
patent: 4399792 (1983-08-01), Otsuka et al.

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