| 摘要 |
PURPOSE:To maintain a specific air blow temperature continuously even when water is being fed, by arranging a simultaneous driving means to regulate a given opening of an air mix door in front of a heater core simultaneously with the operation of a condensing pump. CONSTITUTION:When a pressure in a water jacket 21 increases and the water level drops with a continued operation of a engine 20, sensors 31 and 32 output detected signals, depending on which a modulator 29 outputs an ON signal to a condensing pump 30. Then, the water jacket 21 is filled with water and a steam pressure therein decreases, as well as the steam supply to a heater core 25 decreases. In this case, the above-mentioned ON signal is input to an auto-amp 43 at the same time, and a simultaneous driving signal to open an air mix door 40 is output to a servomotor 42 continuously for a given period of time. In such a way, air flow on a heater core 25 side increases, as well as the air flow through a bypass route 39 decreases, the desired purpose being attained. |
