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

1996-02-23

1997-09-23

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123687, 123694, F02D 4114

Patent

active

056693680

ABSTRACT:
A system for controlling fuel metering for a multi-cylinder internal combustion engine, having a feedback loop which has an adaptive controller and an adaptation mechanism coupled to the adaptive controller for estimating controller parameters .theta.. The adaptive controller calculates a feedback correction coefficient using internal variables that include the controller parameters .theta., to correct a basic quantity of fuel injection obtained by retrieving mapped data by engine speed and engine load, to bring a detected air/fuel ratio to a desired air/fuel ratio. In the system, the internal variables of the adaptive controller are determined in response to detected engine operating conditions, when the engine operation has shifted from an open-loop control region to the feedback control region.

REFERENCES:
patent: 4969439 (1990-11-01), Scotson
patent: 5558075 (1996-09-01), Maki et al.
patent: 5558076 (1996-09-01), Maki et al.
"Digital Adaptive Control" Computrol, No. 27, Jul. 10, 1989, pp. 28-41.
"Automatic Control Handbook", Ohm, Ltd., Japan, pp. 701-707 (No Date).
"A Survey of Model Reference Adaptive Techniques --Theory and Applications", Landau, Automatica, vol. 10, 1974, pp. 353-379.
"Unification of Discrete Time Explicit Model Reference Adaptive Control Designs", Landau et al, Automatica, vol. 17, No. 4, 1981, pp. 593-611.
"Combining Model Reference Adaptive Controllers and Stochastic Self-tuning Regulators", Landau, Automatica, vol. 18, No. 1, 1982, pp. 77-84.

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