| 摘要 |
PURPOSE:To reduce the engine load and improve the fuel consumption, by closing a solenoid valve when the temperature of a cooled chamber is below a prescribed value, and allowng a condenser to be filled with coolant gas, only when the engine is in engine-brake state, by connecting an electromagnetic clutch. CONSTITUTION:If a CPU28 judges the engine-brake state when the temperature T in car-interior is under a prescribed temperature, only an electromagnetic clutch 8 is connected, and the solenoid valve 14 of a condenser 10 is put into closed state, and a blower motor 19 is stopped. Therefore, inflow of cooled air into the car-interior is suppressed by allowing a compressor 2 to compress coolant gas and allowing the condenser 10 to be filled with the gas at high temperature and high pressure. At this time, the concenser 10 operates as charge tank. Therefore, control of temperature in a cooled chamber can be carried-out properly, and the ineffective heat consumed in the engine-brake state can be utilized effectively, and the load of the engine is reduced, and the fuel consumption can be improved. |
