A/C compressor

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2005 Audi allroad, 2004 Audi allroad, 2004 Audi A6, 2003 Audi allroad, and 2003 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The manufacturer "Nippondenso" has changed its name to "Denso."

The compressor is driven via a ribbed belt on the engine when the A/C clutch engages (A/C ON).

Low pressure refrigerant gas from the evaporator is compressed by the compressor. After compression, the refrigerant gas (now high pressure) flows to the condenser.

The variable displacement A/C compressor varies piston stroke and output depending on load requirements and suction pressure.

Fig 1: View Of A/C Compressor

Courtesy of AUDI OF AMERICA, INC.

NOTE:

The compressor contains PAG refrigerant oil that is mixable under all temperatures with refrigerant R-134a.
A label on the compressor indicates that the compressor is for R-134a systems only.