Method and device for self-diagnosis of final setting members

Details Method and device for self-diagnosis of final setting members Method and device for self-diagnosis of final setting members

1985-07-11

1986-07-22

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

36443111, G01M 1500

Patent

active

046011994

ABSTRACT:
A method of and a device for a self-diagnosis of setting members in complex controlling and regulating systems, particularly for the self-diagnosis of an idling speed air charge adjustor of an internal combustion engine, includes the following functional stages: the self-diagnosis is performed at certain operational conditions at which a regulating path governed by a regulating subsystem pertaining to the setting member does not react to a change of the latter and the operation of a motor vehicle thus remains unaffected; the comparing of plausibility of the control signals for the setting member with a second control signal from another regulating subsystem is performed by comparing both control signals with a known, previously determined relation, which is stored in a memory.

REFERENCES:
patent: 4414950 (1983-11-01), Otsuka et al.
patent: 4521769 (1985-06-01), Dudeck et al.

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