Self diagnosis method and apparatus for a fuel temperature detec

Details Self diagnosis method and apparatus for a fuel temperature detec Self diagnosis method and apparatus for a fuel temperature detec

1995-07-18

1997-03-25

Chilcot, Richard

Measuring and testing

Simulating operating condition

Marine

731173, 340449, 36443111, 374 1, G01K 700, G01M 1500

Patent

active

056146647

ABSTRACT:
The invention relates to a method and apparatus for diagnosing an abnormality in an internal combustion engine fuel temperature detection apparatus, by comparing fuel temperature detection values with other detection values for cooling water temperature and intake air temperature. The arrangement is such that when there are large changes in the detection values for the respective temperatures, diagnosis is interrupted, thus enabling the prevention of erroneous diagnosis at the time of hot start and the like when changes in the respective detection values are large.

REFERENCES:
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patent: 4647219 (1987-03-01), Figler et al.
patent: 4901257 (1990-02-01), Chang et al.
patent: 4949078 (1990-08-01), Ito et al.
patent: 5107246 (1992-04-01), Mogaki
patent: 5107247 (1992-04-01), Malaca
patent: 5319963 (1994-06-01), Benford
patent: 5388454 (1995-02-01), Kuroda et al.

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