Mechanical Refrigerant Compressor, Basic Function - GF83.55-P-2001A

WARNING: This page is about a different car, the 2023 Mercedes-Benz C63 S AMG, 2021 Mercedes-Benz C63 S AMG, 2021 Mercedes-Benz C63 AMG, 2020 Mercedes-Benz C63 S AMG, and 2020 Mercedes-Benz C63 AMG. However, it is still accessible from the selected car via links, so may be relevant.

Engine all (CAR)

General

The mechanical refrigerant compressor draws in and compresses the refrigerant. It is driven by the engine via the belt drive.

Regulation of the mechanical refrigerant compressor is carried out steplessly by the climate control control system.

Location

The mechanical refrigerant compressor is mounted on engine and integrated in the belt drive.

Example illustration

Courtesy of MERCEDES-BENZ USA

Function requirements

Circuit 30t ON
Climate control switched on
Refrigerant compressor switched on (A/C function)
Engine running.

Function

The climate control control system regulates the output of the refrigerant compressor steplessly up to 100 % through a regulation valve.

Two variants are currently used:

Refrigerant compressor with magnetic clutch (1)
The climate control control system can completely disconnect the power flow of the belt drive through a magnetic clutch. This in turn enables additional fuel savings to be made.
Refrigerant compressor without magnetic clutch
This refrigerant compressor is equipped with torque limitation. An excessively high load causes the limiter to break. This ensures ongoing operation of the belt drive e. g. in the event of a seized refrigerant compressor.

Magnetic clutch

Courtesy of MERCEDES-BENZ USA

Component description
A/C compressor, component description	Engine all in model 223	GF83.55-P-2109A
Refrigerant compressor magnetic clutch, component description	Engine 656 in model 223	GF83.55-P-4006A