Fuel metering control system for internal combustion engine

Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means

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123679, 123695, F02D 4144

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active

057586306

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 a 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 air/fuel ratio sensor outputs are sampled and one of the sampled data is selected as the air/fuel ratio to be input to the adaptation mechanism. Similarly, the senor outputs are sampled and one of the sampled is selected in accordance with another characteristic to be used in the estimation of the air/fuel ratios of the individual cylinder. The air/fuel ratio is discriminated to be within a prescribed range, and set to a predetermined value when it is determined to be within the prescribed range.

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Digital Adaptive Control; Author: Shozo Fujii; Relevant Pages: pp. 28-41 in No. 27 of "Computrol" published by Corona Publishing Co., Ltd., Jul. 10, 1989, Tokyo, Japan.
Automatic Control Handbook; Author: Shigeru Daimatsu and Masayuki Suzuki; Title: Adaptive Landau; Relevant Pages: vol. 10, pp. 353-379 in Automatica published by Pergamon Press, 1974, U.K.
A Survey of Model Reference Adaptive Technique--Theory and Applications; Author: I. D. Landau; Relevant Pages: vol. 10, pp. 353-379 in Automatica published by Pergamon Press, 1974, U. K.
Unification of Discrete Time Explicit Model Reference Adaptive Control Designs; Author I. D. Landau; Relevant Pages: vol. 17, No. 4, pp. 593-611 in Automatica published by Pergamon Press, 1981, U.K.
Combining Model Reference Adaptive Controllers and Stochastic Self-Tuning Regulators; Author: I. D. Landau; Relevant Pages: vol. 18, No. 1, pp. 77-84 in Automatica published by Pergamon.

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