Method for checking the state of a closed loop air-conditioning system comprising a variable-throughput compressor
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United States of America Patent
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Apr 30, 2002
Grant Date -
Jun 21, 2001
app pub date -
Dec 15, 2000
filing date -
Dec 17, 1999
priority date (Note) -
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Abstract
The temperature of an airflow cooled by an evaporator of a closed loop air-conditioning system, determined by means of a sensor, is compared with a theoretical value corresponding to the control current of an external-control, variable-displacement compressor, in order to detect a low level of refrigerant fluid in the system or any blocking of a compressor valve.
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