Misfire-detecting system for an internal combustion engine

Details Misfire-detecting system for an internal combustion engine Misfire-detecting system for an internal combustion engine

1991-03-21

1994-04-12

Black, Thomas G.

Boots, shoes, and leggings

36442403, 36455101, 123419, 123554, 731173, G06F 1550, G01M 1500

Patent

active

053031580

ABSTRACT:
A system for detecting abnormality in combustion of an internal combustion engine based on fluctuations in the rotational speed of the engine. A signal corresponding to the rotational speed of the engine is subjected to frequency analysis. Abnormality in combustion of the engine is detected based on amplitude of components of the signal at respective predetermined frequencies, the components being obtained by the frequency analysis.

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patent: 5117792 (1992-06-01), Kanno
patent: 5119783 (1992-06-01), Komurasaki
patent: 5127262 (1992-07-01), Demizu et al.

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