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Component Overall state
of the refriger‐
ant
Pressure (in bar) Temperature in degrees
Celsius
(approx. 1.8 bar)
3)
approx. -1°C
3)
1) The pressure in refrigerant circuits with regulating air conditioner compressor is held to approx. 2 bar despite changing heat transport
and differing engine speeds. This applies however only within the rated range of the air conditioner compressor; if the rated range of the
air conditioner compressor is exceeded, the pressure will increase ⇒ page 127 .
2) The temperature in refrigerant circuits with regulating air conditioner compressor is held within the regulation range of the air conditioner
compressor despite changing heat transport and differing engine speeds. This applies however only within the rated range of the air
conditioner compressor ; if the rated range of the air conditioner compressor is exceeded, the temperature will increase ⇒ page 127 .
3) Measured values for air conditioning systems with two evaporators
Note
♦
Air conditioning system compressors that do not self-regulate
their load are switched off by the respective control unit via the
air conditioner compressor regulating valve - N280- when an
evaporator temperature less than 0°C is sensed.
♦
In vehicles with air conditioner compressor regulating valve -
N280- , the pressure on the low-pressure side is varied by
activating the valve.
2.8 Refrigerant circuit with restrictor and reservoir
Arrows show the direction of refrigerant flow.
A- low-pressure side of the refrigerant circuit.
B- high-pressure side of the refrigerant circuit.
Amarok 2011 ➤ , Beetle 2012 ➤ , Bora 1999 ➤ , CC 2010 ➤ , CC 2012 ➤ , ...
Air conditioning system with refrigerant R134a - Edition 10.2014
34 Rep. gr.00 - Technical data
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