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

1997-08-26

1999-03-09

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123687, 123694, 701109, F02D 4114

Patent

active

058787330

ABSTRACT:
There is provided an air-fuel ratio control system for an internal combustion. An air-fuel ratio sensor arranged in the exhaust system detects an air-fuel ratio of exhaust gases emitted from the engine. An amount of fuel to be supplied to the engine is controlled in response to the output from the air-fuel ratio sensor by using a controller of a recurrence formula type, such that an air-fuel ratio of a mixture supplied to the engine is converged to a desired air-fuel ratio, to thereby effect feedback control of the air-fuel ratio of the mixture. The desired air-fuel ratio is determined based on operating conditions of the engine. The desired air-fuel ratio is smoothed when the engine is in a predetermined operating condition. The feedback control of the air-fuel ratio is carried out by the use of the smoothed desired air-fuel ratio.

REFERENCES:
patent: 4727845 (1988-03-01), Misumi et al.
patent: 5758308 (1998-05-01), Maki et al.
"Computrole", No. 27, Corona Publishing Co., Ltd., Japan, pp. 28-41, 1989.
"Automatic Control Handbook" OHM, Ltd., Japan, pp. 703-707, 1983.
"A Survey of Model Reference Adaptive Techniques-Theory and Application", I.D. Landau Automatica, vol. 10, pp. 353-379, 1974.
"Unification of Discrete Time Explicit Model Reference Adaptive Control Designs", I.D. Landau et al., Automatica, vol. 17, No. 4, pp. 593-611, 1981.
"Combining Model Reference Adaptive Controllers and Stochastic Self-tuning Regulators", I.D. Landau, Automatica, vol. 18, No. 1, pp. 77-84, 1982.

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