Method for judging the locked state of auxiliaries for automobil

Details Method for judging the locked state of auxiliaries for automobil Method for judging the locked state of auxiliaries for automobil

1997-04-11

1998-07-14

Biegel, Ronald L.

Measuring and testing

Simulating operating condition

Marine

701101, G01M 1900

Patent

active

057807310

ABSTRACT:
A system for detection of the load torque of auxiliaries of an automobile engine is utilized to detect a locked state of an air-conditioner refrigerant compressor, power-steering oil pump, etc. Namely, a first auxiliary torque in a state where the air-conditioner is operating is measured, and when this exceeds a predetermined value, a second auxiliary torque is measured in a state where the clutch of the compressor is disengaged. When the difference between them exceeds another predetermined value, it is judged that the compressor has locked. When the difference does not exceed the predetermined value, it is judged that the oil pump etc. has locked.

REFERENCES:
patent: 5197326 (1993-03-01), Palm
patent: 5207091 (1993-05-01), Shibata et al.
patent: 5693878 (1997-12-01), Giles

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