Air-fuel ratio control for internal combustion engine

Details Air-fuel ratio control for internal combustion engine Air-fuel ratio control for internal combustion engine

1982-07-13

1984-03-06

Cuchlinski, Jr., William A.

Internal-combustion engines

Charge forming device

Fuel injection system

123492, 123493, 123589, F02M 5100, F02M 2304

Patent

active

044347685

ABSTRACT:
In an air-fuel ratio control system for an engine, when the engine is driving at a specified operating condition such as an acceleration or deceleration condition, the air-fuel ratio is controlled at a stoichiometric air-fuel ratio. During a steady-state operating condition following the termination of the specified operating condition the air-fuel ratio is gradually changed from the stoichiometric air-fuel ratio to a leaner air-fuel ratio which provides the optimum fuel consumption and the air-fuel ratio for optimum fuel consumption is maintained until the engine again comes to the specified operating condition. The change to the optimum fuel consumption air-fuel ratio takes place immediately after the termination of the specified operating condition or after the expiration of a given time after the termination of the specified operating condition.

REFERENCES:
patent: 4026251 (1977-05-01), Schweitzer et al.
patent: 4064846 (1977-12-01), Latsch et al.
patent: 4232643 (1980-11-01), Leshner et al.
patent: 4368707 (1983-01-01), Leshner et al.

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