Adaptive control system for an internal combustion engine

Details Adaptive control system for an internal combustion engine Adaptive control system for an internal combustion engine

1987-12-29

1989-06-27

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123417, F02P 508

Patent

active

048419338

ABSTRACT:
An adaptive control system and method for a multi-cylinder internal combustion engine is provided wherein a perturbation generator perturbs an engine control parameter of a cylinder about a base-line value, and a measuring means measures the slope of an engine output with respect to perturbations in the engine control parameter caused by the perturbation generator. A correction unit employs the measured slope to correct at least one engine control parameter of the engine so as to obtain a desired value of the slope measured by the measuring means. The corrected control parameter can be the same or different from the perturbed control parameter. The perturbation generator operates in a first perturbation mode in an upper speed range of the engine and in a second perturbation mode in a lower speed range of the engine. The slope measuring unit operates in different measurement modes corresponding to these perturbation modes.

REFERENCES:
patent: 4379333 (1983-04-01), Ninomiya et al.
patent: 4389992 (1983-06-01), Shigamutsu et al.
patent: 4448162 (1984-05-01), Ninomiya et al.
patent: 4467765 (1984-08-01), Suzuki et al.
patent: 4596217 (1986-06-01), Bonitz et al.
patent: 4715344 (1987-12-01), Tomigawa
"Tracking of Slowly Varying Parameters by Directional Forgetting" IFAC Congress, Budapest 1984.

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