System for diagnosing an internal combustion engine

Details System for diagnosing an internal combustion engine System for diagnosing an internal combustion engine

1983-09-26

1987-02-24

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

123179B, 340 52F, G01R 3102, F02N 1108

Patent

active

046460080

ABSTRACT:
A system for diagnosing an internal combustion engine having a starter operation sensor. A starter operation diagnosing circuit is provided to response to the output voltage of the sensor for producing a signal when the voltage exceeds a predetermined range. A signal generating circuit is provided responsive to engine speed at the starting of the engine and to produce a fail-safe signal dependent on the engine speed so as to perform starting of the engine.

REFERENCES:
patent: 3712283 (1973-01-01), Kiess
patent: 3938075 (1975-02-01), Reddy
patent: 4219798 (1980-08-01), Frister
patent: 4244340 (1981-01-01), Herth et al.
patent: 4246566 (1981-01-01), Endo et al.

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