Electric Refrigerant Compressor, Component Description - GF83.55-P-2110LFH
Model 222 with engine 256 with code B01 (48V technology)
Model 222 with engine 264 with code B01 (48V technology)
Model 222.004/057/104/157/163/173
With code B01 (48V technology)
Except code B01 (48V-technology)
Location
The electric refrigerant compressor is located on the side of the engine.
Tasks
The electric refrigerant compressor is responsible for intake and compression of the refrigerant. The electric refrigerant compressor is continuously speed-controlled to match the evaporator temperature from 700 to 9000 rpm.
The climate-control control unit (N22/1) actuates the electric refrigerant compressor via the climate control LIN 2 (LIN B8-2).
Pressing the "A/C" button on the climate control operating unit (N58/1) switches off the electric refrigerant compressor. The other functions of the automatic air conditioning are still available. However, a cool-down below the current outside temperature is not possible.
Switching on the electric refrigerant compressor can also be requested by the high-voltage battery cooling function or the pre-entry climate control function.
High-voltage battery cooling system function:
The battery management system control unit (N82/2) sends the request to switch on the electric refrigerant compressor via hybrid CAN (CAN L), powertrain control unit (N127), chassis FlexRay (Flex-E), electronic ignition lock control unit (N73) and interior CAN (CAN B) to the climate control, control unit.
Pre-entry climate control function:
The electronic ignition lock control unit transmits the status of the central locking via the interior CAN to the climate control, control unit. The climate-control control unit then initiates the pre-entry climate control.
The electric refrigerant compressor is switched off according to the outside temperature and if an accident occurs. If the outside temperature is T < -10°C, the electric refrigerant compressor is generally switched off.
With code B01 (48V technology)
Except code B01 (48V-technology)
Structure
The electric refrigerant compressor control unit regulates the rotational speed of the electric motor and the quantity of refrigerant. The electric motor drives the spiral compressor. This consists of two intertwined spirals, one of which is permanently connected to the housing while the second rotates in a circle in the first one. The spirals here form several increasingly smaller chambers within the coils. In these chambers, the refrigerant compressed in this manner reaches the center, where it then exits compressed.
| Wiring diagram for electric refrigerant compressor | Model 222.004/057/104/157 up to model year 2018 with code ME04 (Mild hybrid drive) | PE83.55-P-2000-97SEA | |
| Model 222.163 up to model year 2018 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN)) | PE83.55-P-2000-97SEB | ||
| Model 222.173 as of model year 2018 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN)) | PE83.55-P-2000-97SEC | ||
| Model 222 with engine 256 as of model year 2018 with code B01 (48V technology) Model 222 with engine 264 as of model year 2018 with code B01 (48V technology) | PE83.55-P-2000-97SED |