Nippondenso Co., Ltd.

Mitsutoshi Moriya

Akiro Yoshimi

Masanori Naganoma

Michihiko Kamiya

Kazuaki Takemoto

An air-conditioner control system for vehicles which is responsive to a condition in the compartment of a vehicle to move an air-flow controlling damper in an air duct. When the supply mode of conditioned air is a heater supply mode and when it is detected that the level of insolation in the vehicle compartment is higher than a predetermined level, the control system alters the supply mode of conditioned air to a bi-level supply mode.

Air-conditioner control system for vehicles

An apparatus for controlling an air conditioner for an automobile comprises: an air conditioning unit including a heater unit for heating air passing through an air supply duct and a device for adjusting the amount of air passing through said duct, an air distributing unit for effecting switching among a plurality of air supply outlets into a compartment of the automobile, the unit including a ventilation supply outlet, and an air bypass containing an air valve for supplying cool air upstream of the heater unit to the ventilation supply outlet; a compartment temperature setting unit for setting a desired temperature value within the compartment; sensing units for sensing the temperature within the compartment and the amount of insolation in the compartment; a processing unit responsive to output signals from the compartment temperature setting unit and the sensing units for determining the desired temperature of air supplied to the compartment and for deciding relationships between the air supply temperature and the sensed insolation amount in accordance with preset values corresponding thereto; and means for actuating the air distributing unit and the air valve within the air bypass in response to output signals of the processing unit, whereby the apparatus maintains the temperature within the compartment at the desired value and controls the supply of cool air through the air bypass in response to the sensed insolation amount.

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Gamagori, Japan

Mitsutoshi Moriya