Coolant Compressor - BMW N62 Series Service Training

New Generation N62 Engine

- Coolant compressor

The coolant compressor is supplied by Denso, and is clutch-
free, i.e. it functions all the while the engine is running.
The compressor is a 7-cylinder swash plate compressor.
The compressor's displacement can be reduced to less than
3%. This means that no refrigerant is supplied to the coolant
circuit. There is an internal compressor coolant circuit to
maintain lubrication.
The air conditioning electronics regulate the compressor output
via an external control valve.
The compressor is driven via the 4-V-belt.
Fig. 21: Coolant compressor
Index
1
© BMW AG, Service Training
Description
Control valve
Course Contents/Background Material
KT-7703
Chapter 3 P.26