Air conditioning for motor vehicle has coolant circuit with compressor driven by hydraulic motor having hydraulic pressure operated speed control valve

摘要

The air conditioning for a motor vehicle has a coolant circuit (2) with a compressor (3) mechanically driven by a hydraulic motor (32) actuated by a low pressure hydraulic circuit (33). The speed of the hydraulic motor is controlled by the pressure in the circuit. The motor can be regulated automatically by an electro valve (49) which closes dependent on the pressure.