Air conditioner for vehicle

Abstract

Abstract PURPOSE: To control the temperature precisely, even if driving condition changes, by operating compensatory value of the blowoff air temperathre related to the object blowoff air temperature then controlling the opening of an air mixture door. CONSTITUTION: The standard blowoff air temperature TACO is found by a formula TACO=aTO+bTA+cTS+d (where, TA is ambient temperature, TS is insolution temperature and TO is preset room temperature) by using a standard blowoff air temperature operating circuit 41. On the other hand, the temperature compensatory value ΔT is found by a formula ΔT=α(TO-TR) (where, TO is preset room temperature and TR is room temperature) by using a temperature compensatory operating circuit 42. This operated value TACO is added to the temperature compensatory value ΔT by an adder 43, to obtain blowoff temperature TAC. And this object blowoff temperature is compared with the blowoff temperature detected by a sensor 34 then opening of an air mixture door 5 is controlled. These operations are operated in a standpoint of heat equilibrium, therefore the wide range of temperature can be controlled precisely. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Tetsuya Iijima
• 👤 Seiichi Takahashi

Bibliographic Details