| 摘要 |
PURPOSE:To improve the heating starting-up characteristic by installing a combustion type air heater midway in a wind passage for connecting the car interior and a fan for the circulation of the interior air and heating the circulation air supplied by the fan, by the heater, and supplying said air into the car interior. CONSTITUTION:In warming, a blow-out port switching apparatus 17 is switched to close a blow-out port 15 for cooling, and the operation of a subengine 1 is stopped. In a driving system 13, a driving system between the subengine 1 and a fan 7 is disconnected, and the fan 7 is driven by a motor 19. A valve 20 in a conduit 11 is opened to operate a pump 12, and the hot water after the cooling operation for a traveling engine 8 is introduced into a hot-water heat exchanger 10. While, the car-interior air attracted by the fan 7 or the outside air is heated by the passing through the hot-water heat exchanger 10, and introduced into a combustion type air heater 14 through the fan 7. Therefore, the air which is heated in the process of passing through the heater 14 is blown into the car interior through a blow-out port 16 for heating. |
