| 摘要 |
PURPOSE:To improve heater capability and defrosting capability in such a way that desired air blow-off rate for defrosting on windows is computed from the ambient condition, and hot air blow-off rate is controlled to the convenience for larger blow-off rates necessary for either controlling the temperature in the determined cabin or for defrosting. CONSTITUTION:Blow-off air rate V2 for defrosting on windows is computed from outer air temperature 62, inner air temperature 64, humidity 70 on the window surfaces 23, temperature 72 on the window surfaces, vehicular speed 74, and insolation rate 66. After seeking for target blow-off temperature necessary to make the determined temperature 60 in the cabin at the same time, desired blow-off rate V1 is computed therefrom. Then, blow-off rate V2 for defrosting is compared with blw-off rate V1 for controlling the temperature in the cabin, and when V1 is larger, the number of revolution of a fan 42 is controlled with a fan speed controller 68, and when V2 is larger, the number of revolution of the fan 42 and a temperature regulating mechanism 46 are controlled, so that blow-off rate can be controlled respectively through blow-off ports 18, 22. In such a constitution, both heater capability and defrosting capability can be improved. |
