Method for operating an air conditioner in a motor vehicle, and an air conditioner having a refrigerant circuit
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United States of America Patent
Stats
-
Jun 13, 2000
Grant Date -
N/A
app pub date -
Mar 27, 1998
filing date -
Mar 28, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An air conditioner in a motor vehicle containing a refrigerant circuit, which includes an evaporator, an output-controlled compressor that is driven by an engine, a condenser and an expansion device is provided. The evaporator and the condenser are each assigned a blower for applying an air flow. To operate the air conditioner, there is provided an electronic control device which, as a function of input signals, generates output signals for driving actuators for output-controllable components of the air conditioner. For this purpose, at least two state variables of the refrigerant circuit are detected, and the cutoff function of the compressor is determined from a comparison of (i) a value, derived from the at least two state variables and relating to the current delivery rate of the compressor, with (ii) a prescribed value for the maximum delivery rate.
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