LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2015 >> 528i >> Repair and Diagnosis (Single Page) >> General Information >> OEM General Information >> Functional Description - F10 - HVAC System, Steering System, Restraints System >> HVAC System - Functional Description >> Integrated automatic heating/air conditioning system (IHKA) >> Air conditioning compressor

Air conditioning compressor

The air conditioning compressor compresses the refrigerant taken in by the evaporator. The refrigerant is pressed towards the capacitor.

The air conditioning compressor driven by the engine by means of a belt drive. The air-conditioning compressor is switched on and off via a magnetic coupling. The junction box electronics (JBE) control the air conditioning compressor magnetic coupling. Stepless power control is possible in the air conditioning compressor. Within the A/C compressor, the delivery volume and thus the pressure in the refrigerant circuit is generated by pistons. The piston stroke is controlled by a swash plate. The electric control valve on the A/C compressor influences the balance of forces on the swash plate and thus the adjustment of the displacement. The junction box electronics (JBE) control the control valve with a clocked voltage. The IHKA control unit prompts the activation. For the purpose of load reduction, only the cooling power that is directly needed is generated.