Fuel metering control system for internal combustion engine

Details Fuel metering control system for internal combustion engine Fuel metering control system for internal combustion engine

1995-12-29

1998-08-04

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123694, F02D 4114

Patent

active

057878684

ABSTRACT:
A fuel metering control system for an internal combustion engine including a feedback loop having an adaptive controller and an adaptation mechanism that estimates controller parameters .theta.. The adaptive controller corrects the quantity of fuel injection to bring a controlled variable obtained at least based on an output of said air/fuel ratio sensor, to a desired value. The adaptation mechanism is input with the controlled variable once per prescribed crank angle such as a TDC of a certain cylinder and estimates the controller parameters. Since, however, the input is limited to a specific cylinder's air/fuel ratio, the air/fuel ratio is averaged for all cylinders and used in the calculation. Similar averaging is made for the other parameters input to the mechanism or output from the controller.

REFERENCES:
patent: 4655188 (1987-04-01), Tomisawa et al.
patent: 5209214 (1993-05-01), Ikuta et al.
patent: 5448978 (1995-09-01), Hasegawa et al.
European Abstract EP0221386A3, Application No. 86113946.7, Issued May 13, 1987.
"Digital Adaptive Control", Computrol (Corona Publishing Co., Ltd.) No. 27, pp. 28-41, published Jul. 10, 1989.
Automatic Control Handbook (Ohm Publishing Co., Ltd.) pp. 703-707, published Oct. 30, 1983.
"A Survey of Model Reference Adaptive Techniques--Theory and Applications" by I.D. Landau In Automatica, vol. 10, pp. 353-379 published Jun. 18-21 1973.
"Unification of Discrete Time Explicit Model Reference Adaptive Control Designs" by I.D. Landau et al. In Automatica, vol. 17, No. 4, pp. 593-611, 1981.
"Combining Model Reference Adaptive Controller and Stochastic Self-tuning Regulators" by I.D. Landau In Automatica vol. 18, No. 1, pp. 77-84, published Aug. 1981.

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