Compressor HVAC: Description and Operation

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.

NOTES:
- 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