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Home >> BMW >> 2015 >> M235i 2D Convertible, Automatic Trans >> Repair and Diagnosis >> General Information >> OEM General Information >> Functional Description - 2-Series (F22) - Charging System, Anti-Theft System, Body Electrical System, HVAC System >> HVAC System - Functional Description >> Integrated automatic heating/air conditioning system (IHKA) >> Brief component description >> Air conditioning compressor

Air conditioning compressor

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

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 clutch.

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 actuation. For the purpose of load reduction, only the cooling power that is directly needed is generated.