| 摘要 |
PURPOSE:To simplify electrical circuits and facilitate installation and improve reliability by detecting the discharge temperature of a compressor and controlling the operation of the blower apparatus of a car-side engine cooling heat-exchanger. CONSTITUTION:The control system for the blower of a car-side engine cooling heat-exchanger 23, e.g., for a main fan 15 is constituted of a main-fan relay, water-temperature switch 17 and the discharge temperature sensor 18 for a compressor. When the temperature of the main fan 15 increases over the preset discharge temperature of the compressor, the main-fan relay operates, and the main fan 15 is switched ON. When the water-temperature switch 17 installed onto an engine 20 operates, a main fan is switched ON. Since the system in which the control sensor for the main fan is not installed onto the high-pressure side of a coolant circuit, leak of coolant gas and the resonance of coolant sound, etc. can be suppressed, and the generation of noise can be reduced, since the main fan can be operated without frequently repeating ON and OFF operation. |
