Compressor HVAC: Description and Operation

The air conditioning system uses a Nippondenso, double-acting swash plate-type compressor. This compressor has a fixed displacement of 170 cubic centimeters (10.374 cubic inches). A label identifying the use of R-134a refrigerant is located on the underhood fuse panel cover.

The A/C system uses 1.97 Lbs. (0.88 Kg.) of R-134a type refrigerant.




After the electromagnetic clutch has produced the frictional connection between the engine and the compressor, the drive shaft (1) drives the swash plate (3). The rotation of the inclined swash plate (3) causes the pistons (4) to move in strokes. During the intake stroke, refrigerant vapor is sucked in via the inlet valve (6). If the piston (4) moves in the counter direction, it delivers the refrigerant vapor via the pressure control valve (7), with the vapor being compressed and heating up, into the refrigerant line to the condenser.