초록 ▼

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

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.

대표청구항 ▼

An adaptive control system for a power producing engine having at least one engine control parameter affecting an engine output, said engine having a drive train combination having at least one resonant frequency, said control system comprising: (a) a perturbation generator for perturbing intermitte

An adaptive control system for a power producing engine having at least one engine control parameter affecting an engine output, said engine having a drive train combination having at least one resonant frequency, said control system comprising: (a) a perturbation generator for perturbing intermittently a particular said engine control parameter about a base line value in at least one perturbation mode in a given operating mode of said engine which includes said at least one resonant frequency; (b) measuring means for measuring a slope of said engine output with respect to said particular control parameter caused by said perturbation generator; and (c) control means, responsive to said slope, for controlling one said engine control parameter so as to obtain a desired value of said slope, wherein said perturbation generator operates in another perturbation mode in another operating mode of said engine to perturb said particular control parameter at a frequency greater than said at least one resonant frequency.