Automotive air conditioning apparatus

Details Automotive air conditioning apparatus Automotive air conditioning apparatus

1981-04-21

1982-11-23

Wayner, William E.

Refrigeration

Automatic control

Responsive to vehicle body motion or traction

623234, B60H 304, F25B 2700

Patent

active

043598757

ABSTRACT:
In on-off controlling a compressor of an automotive air conditioning apparatus in a cooling mode of operation, a compressor control switch responsive to a parameter indicative of an operating condition of the compressor is actuated by an output of a sensor for sensing an engine operating condition of a motor vehicle. During a deceleration, the sensor establishes an electrica path from a power source to the compressor which bypasses the compressor control switch. This bypass path is also set up when the motor vehicle is in a standstill with the engine idled. As a deceleration lasts over a given period of time, a timer is actuated to make a connection between the compressor control switch and the power source alive again. An idling up circuit compensates for a decrease in the engine speed attributable to compressor activation during a constant speed run and/or a standstill of the motor vehicle.

REFERENCES:
patent: 3462964 (1969-08-01), Haroldson
patent: 3918543 (1975-11-01), Halem
patent: 4226090 (1980-10-01), Horian
patent: 4269033 (1981-05-01), Birch

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