Boots – shoes – and leggings
Patent
1981-11-09
1985-03-19
Krass, Errol A.
Boots, shoes, and leggings
123487, 364550, 371 14, 371 20, 371 66, 371 67, G01R 3128
Patent
active
045063389
ABSTRACT:
According to the method of the present invention for judging the state of operation of an intake passage pressure detecting device for an engine, first at the time of starting control the intake passage pressure detecting device is regarded as being in a state of failure, then an initial output from the intake passage pressure detecting device is stored, and in case the difference between this stored initial output and a subsequent output from the intake passage pressure detecting device exceeds a predetermined value, it is judged that the intake passage pressure detecting device is in a state of normal operation. Consequently, the state of operation of the above intake passage pressure detecting device can be judged with high reliability, and the reliability of the entire system can be improved to a large extent.
The apparatus of the present invention for judging the state of operation of an intake passage pressure detecting device for an engine is of a simple construction comprising a power-on reset circuit, a memory circuit, a comparison/change detecting circuit and a failure output circuit, whereby the state of operation of the above intake passage pressure detecting device can be judged with high reliability and, like the method of the present invention, the reliability of the entire system can be greatly improved.
REFERENCES:
patent: 4322847 (1982-03-01), Dodge et al.
patent: 4356726 (1982-11-01), Yoshino
patent: 4391130 (1983-07-01), Nakano et al.
Danno Yoshiaki
Nakagami Tatsuro
Adams Bruce L.
Burns Robert E.
Herndon Heather R.
Krass Errol A.
Lobato Emmanuel J.
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