Abstract: An air conditioning system suitable for use in an electric vehicle. In the system, an air conditioning mechanism for air-conditioning the driver and passenger room of the vehicle is disposed in the vehicle. A sensor is attached to at least one window or disposed in the vicinity of the window. The sensor outputs a signal for making a decision as to whether or not the window is in a clear state. A glass heating device is used to heat each such window. When it is determined based on the output signal of the sensor that a window is unclear, either iced or foggy, a control device is activated to energize the glass heating device and to output a signal for controlling the power used by the air conditioning mechanism. Thus, water or moisture condensed on the surface of each window or ice formed on the surface thereof can be quickly removed. Further, the total amount of energy to be used by the air conditioning system can be reduced.

Abstract: A heating installation for a motor vehicle is of the kind in which air, from two air processing circuits is delivered to the left hand and right hand halves of the vehicle cabin respectively, in such a way that the temperature of the air in the two halves of the vehicle can be adjusted so as to be different if required. The installation includes a moulded member defining four air streams between the outlets of the left and right hand processing circuits and a windshield de-icing/de-misting slot means, namely: a first flow path extending from the left hand circuit to a left hand slot region; a second flow path extending from the left hand circuit to the right hand slot region; a third flow path extending from the right hand circuit to the left hand slot region; and a fourth flow path extending from the right hand circuit to the right hand slot region.

Abstract: An improved heating and cooling system for a vehicle. The system includes a housing mounted in the dash which includes separate passageways and outlets for cool air, heated air, and defrost. The system may also include a second housing communicating with the engine cover to channel the heated or cooled air to the first housing through a blower.

Abstract: An air conditioner is provided for a motor vehicle which controls the division of the blow-out air by individually adjusting the blow-out air temperature of the center vent, right side vent and left side vent over a broad temperature range. The blow-out air temperature is controlled from the upper and lower and right and left blow-out parts by the passengers of the motor vehicle to place the cabin of the motor vehicle into a comfortable temperature range. The conditioned air within the conditioned air passages is responsive to load conditions both inside and outside of the passenger compartment to individually adjust the temperature of the conditioned air. A first and second auxiliary duct which introduces cool air from the upstream side of the air mix door and warm air from the downstream side of the heater unit into the conditioned air flows through the right side vent duct, and left side vent duct, respectively.

Abstract: A heating and ventilating apparatus for a motor vehicle includes a cold air admission duct supplying the admission and heating circuit in order to produce a stream of cold or heated air for introduction into the inlet of a distribution circuit having air outlet ducts which exhaust into different parts of the cabin of the vehicle.The apparatus includes a priority demisting duct which is separate from the distribution circuit, and which has an inlet communicating with the admission and heating circuit, together with an outlet which exhausts behind the windshield. A shut-off valve is displaced between a priority demisting position, in which it closes off the inlet of the distribution circuit, and a normal position in which it closes off the inlet of the priority demisting duct.

Abstract: The operation mode of an air conditioner system is automatically controlled between VENT mode, BI-LEVEL mode, HEAT mode and so forth according to environmental conditions. The air conditioner system includes a control unit for operation mode selection. In HEAT mode, the control unit adjusts ratio of the conditioning air discharged from a defroster nozzle to that from a foot nozzle according to environmental conditions or on the basis of a required discharge air temperature necessary to obtain a desired air temperature in the vehicular cabin. The air conditioner system also includes a sensor for monitoring a preselected air conditioner control parameter for producing a sensor signal. The control unit calculates the required discharge air temperature on the basis of the monitored parameter.

Abstract: A defroster construction comprises a defroster nozzle main body having a connecting end for connection with a defroster side outlet of an air conditioning unit and elongated in a vehicle width direction. The defroster nozzle main body has substantially at a longitudinal center of the connecting end a first air inlet for supplying conditioned air to side ducts. The defroster nozzle main body further has at the connecting end a pair of second air inlets for supplying conditioned air to a pair of front defroster nozzles, independently. The second air inlets are located on opposite sides of the first inlet which are opposed in the longitudinal direction of the connecting end. An air flow guide is provided to the first air inlet so as to equally distribute a quantity of conditioned air to the respective side ducts.