System for detecting the compression of liquid refrigerant in a

Details System for detecting the compression of liquid refrigerant in a System for detecting the compression of liquid refrigerant in a

1993-04-08

1994-09-20

Tanner, Harry B.

Refrigeration

Automatic control

Responsive to vehicle body motion or traction

62 83, 623234, 123339, F16D 2716

Patent

active

053478240

ABSTRACT:
Problems accompanying the appearance of compressed liquid refrigerant in a compressor are solved and deterioration of vehicle performance and degeneration of a magnetic clutch (when there is no compressed liquid refrigerant in the compressor) are prevented. An ECU 7 for energizing magnetic clutch 5 determines that there is liquid refrigerant in a compressor when a reduction rate .DELTA.NE of the engine revolution number is larger than a set value when the compressor 4 is started and the magnetic clutch is de-energized for a certain period of time.

REFERENCES:
patent: 4939909 (1990-07-01), Tsuchiyama et al.
patent: 5056326 (1991-10-01), Ohkumo et al.

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