Method for detecting abnormalities in a crank angle sensor and a

Details Method for detecting abnormalities in a crank angle sensor and a Method for detecting abnormalities in a crank angle sensor and a

1995-12-20

1997-08-19

Dombroske, George M.

Measuring and testing

Simulating operating condition

Marine

731173, 731182, 123419, 123436, 36443103, 36443107, F02D 4500, G01M 1500

Patent

active

056591349

ABSTRACT:
To improve the reliability and detecting capability of an apparatus for detecting abnormalities in a crank angle sensor, the apparatus comprises detection keeping devices which assumes that there is an air weight flow higher than a predetermined value for a predetermined interval after an output of the air volume sensor has fallen below a predetermined value, to enable abnormalities in the crank angle sensor to be detected with greater accuracy in spite of variations in air volume during cranking of the engine or after stopping of the engine.

REFERENCES:
patent: 4502446 (1985-03-01), Kanegae et al.
patent: 4788956 (1988-12-01), Suzuki et al.
patent: 5044336 (1991-09-01), Fukui
patent: 5197325 (1993-03-01), Tamura et al.
patent: 5305220 (1994-04-01), Schoggl
patent: 5377535 (1995-01-01), Angermaier et al.
patent: 5497748 (1996-03-01), Ott et al.

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