Abstract: A method and a system for regulating the mixed air in a heating/air-conditioning unit (1) of a motor vehicle in which fresh air and/or recirculated air are fed to a heating/air-conditioning unit (1) which controls the feeding of fresh air and/or recirculated air in the passenger compartment of the vehicle. In a method for optimizing the consumption of energy for such heating/air-conditioning systems, the feed of fresh air and/or recirculated air is so adjusted that the temperature of the dew point of the air within the vehicle is less than the temperature on the inside of a window of the vehicle.

Abstract: A vehicular defroster control system comprising a single defroster selector switch for alternatively operating the air-conditioning defroster only or both the air-conditioning defroster and the electric heat-operated defroster, an environmental condition input unit for inputting environmental conditions including at least an ambient air temperature and a sunlight intensity, and an operation control means for judging whether or not the inputted ambient air temperature and the sunlight intensity are lower than previously set predetermined values, and operating the electric heat-operated defroster only when it is judged that both of the inputted ambient air temperature and the sunlight intensity are lower than the predetermined values.

Abstract: Disclosed are air circulation systems for vehicle heating and cooling system, especially for heating and cooling the passenger compartment and other pertinent compartments of motor vehicles, as well as trains, airplanes, etc. The invention more particularly concerns apparati and methods for improving the air quality in such systems through the use of filters for decontamination of air flows. The invention relates generally to apparati and methods for causing the air flow to pass through a decontamination module to clean the air. Preferred devices of the present invention controls the extent of such cleaning by a by-pass and damper arrangement, which apportions the flow between the module and the by-pass. Various bypass configurations having various flow characteristics are disclosed. The invention has application to both new vehicles as original equipment and older vehicles as added equipment.

Abstract: A method is provided for controlling a climate control system having an automatic climate control system and a manual climate control system for an automobile having a convertible top. The method includes the step of detecting whether the convertible top is retracted. A signal indicating whether the convertible top is open is delivered to a climate control unit which includes an algorithm which assists in controlling the mode selection logic based on the results of the detection. The climate control unit creates a mode selection signal based on the results of the algorithm, and sends the mode selection signal to the mode selection logic, the mode selection signal being such that the mode selection actuator actuates the automatic climate control mode when the convertible top is up and the mode selection actuator actuates the manual climate control system when the convertible top is retracted.

Abstract: An air conditioning system for a vehicle is composed of a control unit which controls an air switching door, an element for detecting a clean-air level of the outside air and a vehicle speed sensor. The control unit controls the air-switching door to set to the outside-air mode when the clean-air level is higher than a reference level and to the inside-air mode when the clean-air level is not higher than the reference level. The control unit holds the inside-air mode until the vehicle speed becomes higher than a predetermined speed irrespective of the clean-air level.

Abstract: In the process steps a tentative value (m) of a deviation in a turning angle of a rotor of the stepping motor is determined each time the stepping motor runs. A cumulative amount of the tentative values (m) forms an estimated value (S) of the deviation in the turning angle of the rotor of the stepping motor. This estimated value (S) of the stepping motor. This estimated value (S) of the deviation is stored in a predetermined memory area. When an ignition switch is turned on, it is judged whether or not the estimated value (S) of the deviation thus stored until the ignition switch is turned on, exceeds a predetermined value. When it is judged that such estimated value (S) exceeds the predetermined value, an initial setting of the stepping motor is made.

Abstract: A device and method for controlling air conduction in a vehicle includes an air conduction element. The air conduction element is controlled as a function of the moisture in the vehicle interior, intermediate positions of the air conduction element being possible between a maximum proportion of circulating air and a maximum proportion of fresh air. In this way, the proportion of fresh air is increased only gradually when there is a high pollution impact if the interior moisture does not exceed a maximum moisture value .PHI..sub.max. Control of the moisture in the vehicle interior increases the comfort of the vehicle occupants. A circulating-air dryer makes it possible, in principle, to continue in circulating-air operation for an unlimited period.

Abstract: When a difference in opening angle of an air-mixing door between a target position and an actual position is larger in value than a width of an insensitive band area, a mixing door actuator is driven to a heating side or a cooling side depending on the amount of the difference so as to have the air-mixing door reach its target position in a condition in which the insensitive band area is eliminated. When the difference is smaller than the predetermined band width, i.e., when a drive position of the mixing door actuator is in the insensitive band width, this band width is effected so that the mixing door actuator is stopped in operation to stabilize the operation.

Abstract: A heating and ventilating installation for a motor vehicle includes a regulating valve for adjusting the distribution of fresh air, received from a fresh air delivery chamber, between a first duct and a second duct. The first duct contains a heating radiator, and the first and second ducts exhaust into an air mixing zone, which communicates with a ventilating air vent and a foot warming vent in the cabin of the vehicle. A temperature sensor is located immediately downstream of the heating radiator, and transmits signals, representing the prevailing value of the temperature of heated air in the first duct, to a processing module.

Abstract: An automobile air conditioning system including a fan unit for generating an air flow. The air flow is directed to the passenger compartment of the automobile through a first air duct which is provided downstream of the fan unit. A second air duct branches from the first air duct which extends over and in parallel to the first air duct. A filter is provided between the first and second air ducts for cleaning the air flow to the second air duct from the first air duct through the filter. Further, the air conditioning system is provided with means for selectively directing the air flow from the fan unit to the passenger compartment through the first air duct or through the first and second air ducts.

Abstract: A control system of automotive air conditioning device comprises a heater/cooler unit having therein a plurality of control doors by which various air flow modes are provided. A plurality of identical actuators are employed for actuating the control doors. Each actuator includes an electric motor for driving the corresponding control door, a position detector for issuing a current position signal representative of the current angular position assumed by the corresponding control door, and a control circuit for controlling the electric motor by processing both the current position signal as well as a target position signal applied thereto. A control unit is further employed for totally controlling the actuators by means of a multiplex communication carried out between the control unit and each of the actuators. The control unit issues the target position signal to each of the actuators.

Abstract: Method and system for modifying the control of an automotive HVAC (heating, ventilation and air conditioning) to prevent the formation of cabin temperature stratification. The control algorithm responds to signals generated by various climate control sensors to calculate a value representing the likelihood of stratification. The stratification strategy achieves the following three functions: (1) calculation of the likelihood of stratification, (2) estimation of probable level of stratification, and (3) modification of strategy to dispel stratification. Fuzzy logic calculations are performed based on fuzzy rules and membership functions to provide these functions and to allow the control to be expressed in simple heuristic terms.

Abstract: In the case of failure in communication between the control unit and the control panel in the manual operation of a car air conditioner, the operation mode is changed over to an automatic mode to introduce the outside air. In the case of failure in communication between the control unit and the mode door actuators, the compressor is turned on to introduce the outside air.

Abstract: An air-conditioning apparatus for allowing the temperatures of a first air-conditioning zone and a second air-conditioning zone to quickly approach the respective set temperatures by properly controlling the air flow rate and the ratio of fresh/recirculated air, even when the set temperatures differ from one another. The device includes a controller that determines whether the system is in a transitional period or in a steady state based on the deviation of the compartment temperature detected by the compartment temperature sensor from the first and second set temperatures for the first and second zones. If a determination is made that the system is in a transitional period, the controller acts to determine the flow rates of air being supplied to respective blowers as well as making the determination concerning the guidance ratio of the fresh to recirculated air.

Abstract: A motor vehicle ventilation system having a recirculation or air input mode in which when the rate of change of a signal from an outdoor gas pollution sensor exceeds a threshold limit, the system is adjusted to the recirculation mode.

Abstract: A motor vehicle air conditioning system includes an adjustable position air inlet valve for controlling the relative proportions of recirculated air and fresh air from outside entering the system. A first sensor and a second sensor give respective measurement signals representing the inside temperature of the cabin and the outside temperature. The occupant of the vehicle can set a required value of inside temperature on a data unit, which memorizing this setting. The installation includes a processor for computing the difference between the actual inside temperature and its required value, and for memorizing at least one first temperature threshold value. The processor makes a first comparison between this first threshold value and the computed absolute value of the temperature difference, and then performs a second comparison between the inside and outside temperatures.

Abstract: The invention is based on the premise that, for a given air blower, the current I consumed by the electric motor, the rotational speed N and the air flow rate Q are interconnected, regardless of the dynamic pressure, by a law Q=f(I, N) which can be experimentally determined on a ventilation bench. In order to perform any adjustment, I and N are measured, from which a calculator derives Q by means of the above-mentioned law. The comparison of the calculated value with the desired flow rate Qd provides an error signal which is applied to a control device which determines the supply voltage (U) of the motor of the blower. The invention is applicable to heating or air-conditioning installations for the passenger space of vehicles.

Abstract: An air conditioner for a vehicle which prevents backflow of outside air into a vehicle interior. An inside/outside air switching damper of the air conditioner for a vehicle is connected to a servo motor by a link. Due to driving of the servo motor, the inside/outside air switching damper swings between an inside air position, at which the inside/outside air switching damper closes an inside air passage side opening, and an outside air position, at which the inside/outside air switching damper closes an inside air suction opening. The servo motor is connected to an amplifier for control. An inside/outside air mode switch, a blowout opening mode switch, a vehicle speed sensor, and a blower voltage detecting circuit are connected to the amplifier for control.

Abstract: An air conditioning system for vehicles prevents pressure loss in an air conditioner casing from increasing by air-conditioning a passenger compartment while detouring around an air cleaning unit when the air conditioning situation is in an irregular air conditioning range, and improves passengers' comfort by cleaning and air-conditioning air by way of the air cleaning unit when the air conditioning situation is in a regular air conditioning range.

Abstract: An air conditioner for a vehicle wherein a vehicle compartment can be quickly warmed up if it is cool and, when the vehicle compartment has been warmed up, the heat load caused by incident solar radiation can be offset without having the vehicle driver feel cold. A variable GW is determined by a balance (Tset-Tr) between a setting temperature and a vehicle inside air temperature, and a corrected solar radiation quantity is defined as a value which is a product of a value detected by a solar radiation sensor and the variable GW. Based on this corrected solar radiation quantity, there are decided a temperature falling allowance and an air volume rising allowance of the air blown from a face level air outlet. If a first necessary blown air temperature (TAOD) is lower than 25.degree. C., a distribution ratio Fs is set as 1 and is made gradually smaller if TAOD is higher than 25.degree. C.

Abstract: The present invention provides a method of reducing the level of air pollution in the interior of a vehicle, the vehicle having a detection system for detecting one or more conditions and an air intake system leading to the interior of the vehicle, the air intake system having means for controlling the air intake based on the detection of the one or more conditions, the method comprising the steps of (a) detecting the conditions, and (b) automatically controlling air intake to the interior of the vehicle in response to such detection, so that the one or more detected conditions include, i) when there is an object in front of the vehicle, a representation of the distance to such object, and ii) when there is no object in front of the vehicle, a representation of such fact. The present invention is not dependent upon any complicated or expensive detection system for analyzing polluted air, although it is possible to use such prior art system in combination with the present invention.

Abstract: A system for vehicle climate control comprises a number of sensors probing the speed of the vehicle, the position of climate temperature unit and mode doors, the speed of the fan, ambient and interior temperature, and airflow setting. In a body controller, the probed data are correlated to look-up table values to keep the airflow volume constant and to decrease voltage applied to a fan motor when the speed of the vehicle increases. A method of practicing the climate control implemented in the system comprises a sequence of steps providing sensing a number of parameters, defining and storing in a controller memory a data characterizing relationship between the speed of the vehicle and the other parameters of the system, and correlating the sensed and stored data to maintain the airflow volume substantially constant.

Abstract: An air conditioner for vehicles includes a damper for switching among an outside-air inlet mode, an inside-air inlet mode and an outside/inside-air inlet mode, a manual switch for selecting any one of the respective inlet modes, an automatic switch for automatically selecting one of the respective inlet modes, a heating and cooling operation unit, an inside-air temperature sensor, an outside-air temperature sensor and a control unit for selectively controlling the respective inlet modes based on the condition of the heating and cooling operation unit, the condition of the respective switches and the difference between the temperatures detected by the respective temperature sensors. In the air conditioner, an optimum air conditioning in correspondence to the load required for air conditioning can be realized from the viewpoint of saving of energy and efficient operation.

Abstract: A base mode is set at a face mode or foot mode based on an external air temperature signal TAM detected by an external air temperature sensor. An automotive air conditioner includes a driver side air conditioning zone and a passenger side air conditioning zone. When the blow mode for the driver side air conditioning zone is set in the foot mode and the blow mode for the passenger side air conditioning zone is set in the face mode or vice versa, the blow mode which is identical to the base mode is maintained. The other blow mode is changed to a bilevel mode. This prevents frequent change in the base mode and avoids hunting.

Abstract: Method and control system for controlling an automotive HVAC (heating, ventilation and air conditioning) system using fuzzy logic to increase steady state comfort of an occupant in a vehicle and to decrease the time needed to reach steady state comfort. The control system responds to signals generated by various climate control sensors, including a humidity sensor, to produce a desired humidity, temperature and flow. Fuzzy logic calculations are performed based on fuzzy rules and membership functions to provide nonlinear compensation and to allow the control to be expressed in the same heuristic terms that an occupant could use in describing the level of comfort.

Abstract: When a battery charger supplying external power to a vehicle air conditioning unit is detected as being disconnected by a connection sensor, a central processing unit stops operating the air conditioning unit upon elapse of a predetermined time after the detected disconnection. When a start signal is inputted from an ignition switch within the predetermined time, the central processing unit switches to a normal air conditioning mode to continue operating the air conditioning unit without interruption. The operation sequence is effective to prevent the energy stored in a battery as an internal power source from being unduly wasted, and to switch smoothly to the normal air conditioning mode.

Abstract: An air conditioner system for a vehicle having an occupant compartment which includes a driver's occupying area and a front passenger's occupying area. The system includes a vent duct adapted to conduct a conditioned air. The vent duct defines a first passages opening to the driver's occupying area and a second passage opening to the front passenger's occupying area. First and second vent valves are disposed within the first and second passages, respectively. First and second actuators are drivingly connected to the first and second vent valves. A first sensor is so constructed and arranged as to detect insolation magnitude within the driver's occupying area and generate a first sensor signal indicative of the detected insolation magnitude within the driver's occupying area.

Abstract: An interior rearview mirror for a motorized vehicle has a mirror housing with a mirror member and a mirror support connected to the mirror housing. At least one sensor for sensing solar radiation entering the interior of the motorized vehicle through the windshield is provided. The sensor is coupled to the control unit of an air conditioning device of the motorized vehicle.

Abstract: Method and control system for controlling an automotive HVAC (heating, ventilation and air conditioning) system using fuzzy logic to prevent fogging. The control system responds to signals generated by various climate control sensors including a humidity sensor to produce a desired vehicle air temperature and air flow to detect and avoid incipient windshield/window fog conditions. Fuzzy logic calculations are performed based on fuzzy rules and membership functions to provide nonlinear compensation.

Abstract: An adaptive electronic climate control (ECC) system for a vehicle that allows adjustments to the temperature setting and blower speed controls of the ECC system to teach the system to automatically be set to the vehicle operator's comfort level. If the vehicle operator adjusts the temperature set point at a particular ambient air temperature, the system will store this change for that ambient air temperature. Once the change has been validated, the next time the system encounters that ambient air temperature, the system will automatically provide the appropriate air mixture as previously set by the vehicle operator. Further, when the vehicle operator adjusts the blower speed, the system will gradually adapt the blower speed to that which is set by the vehicle operator for a particular set of vehicle parameters that affect the climate within the vehicle.

Abstract: A system for ventilating the cabin of an overheated vehicle which takes advantage of convection and evaporation as methods of cooling. The system is voice controlled. The invention places a fan, separate from the vehicle's air conditioning and heating system, near the rear of the cabin. The fan directly connects the interior cabin air to outside air. Upon the opening of the driver's door, the driver's window rolls down and the fan turns on, drawing hot air out of the cabin to the outside, through the rear duct and across the driver's perspiring face and body. After the temperature inside the cabin drops to a predetermined comfortable temperature, a chime sounds to alert the driver to turn the ventilating system off. Alternatively, the system may shut off automatically after a preset time period. Voice control allows the driver to winterize the system, to turn off the chime, or to run the system for demonstration purposes.

Abstract: A method of reducing the level of air pollution in the interior of a vehicle having a controllable air intake system leading to the interior of the vehicle, and a detection system for detecting one or more conditions, comprising the steps of (a) detecting the one or more conditions, and (b) controlling air intake to the interior of the vehicle in response to such detection, so that the one or more conditions are causing and/or being the result of a potential energy to kinetic energy conversion of the vehicle and/of by the one or more conditions being the physical inclination of the vehicle. "Causing and/or being the result of" as used herein means "directly or indirectly causing and/or being the result of.

Abstract: An automatic vehicular ventilating system ventilates the passenger room of a vehicle such as automobiles, aircraft, railway passenger cars and ships to maintain air in the passenger room at a fixed temperature automatically. The automatic vehicular ventilating system includes a solar power supply unit having a solar panel as a power supply, a first switch responsive to the output of a thermostat, and a second switch in communication with at least at least one of an ignition switch of the vehicle and a hand brake of the vehicle; an exhaust unit having an air exhaust damper; and a fresh air supply unit having an air supply damper. The air exhaust damper and the air supply damper are driven by electric power supplied from the solar power supply unit.

Abstract: Air to be introduced into the cabin of a motor vehicle passes over a measuring device, in which parameters such as temperature, humidity and pollution are measured. The measuring device comprises a housing having an air inlet, which is supplied with a fraction of the air stream, and an air outlet for evacuating this fraction. The housing has an internal chamber which communicates with both the air inlet and the air outlet, and air circulating means such as a pump are provided for setting up a differential pressure between the inlet and outlet so that the fraction of the air stream to be measured flows through the chamber in the housing. The sensor or sensors are arranged in this chamber, so that they are always ventilated by the air passing through the latter.

Abstract: In a motor vehicle having equipment parts in the front-occupant area which can be adjusted on separate sides, two operating modes are possible. In a conventional operating mode, the adjusting of the equipment parts on the front passenger's side takes place individually corresponding to the front passenger's presettings. In the other operating mode, the adjusting of the equipment parts on the front passenger's side takes place synchronously with the adjustment of the equipment parts on the driver's side corresponding to the driver's presettings. The selection of the two operating modes takes place automatically or arbitrarily.

Abstract: A vehicle has a cabin and an air conditioning system for cabin air, the system including a ventilator and a compressor. With a view to energy consumption and the time taken for reducing the cabin air temperature to an acceptable value when the vehicle has been left stationary in full sun, the air conditioning system is used for reducing cabin air temperature in three successive stages. These stages are controlled in response to the internal temperature T.sub.i and the external temperature T.sub.e, as follows:(a) when T.sub.i is much greater than T.sub.e, for example due to heating by the sun, the air in the cabin is renewed by direct admission of external air to the cabin at a high flow rate;(b) when T.sub.i is close to T.sub.

Abstract: An air-conditioning apparatus for a vehicle having separate units for a driver's seat and an assistant driver's seat. Each of the units has first and second vent outlets opened to a cabin near the lateral side of the cabin and the center side of cabin. A sensor is provided for detecting an amount of the solar radiation. The sensor also can detect an azimuth angle and elevation angle of the sun with respect to the direction of movement. An increase in the thermal load due to the solar radiation is determined, and the calculated increase is allocated to the first and second vent outlets by changing the temperature and/or the amount of the air discharged from the respective outlets, so that the passenger can feel a uniform temperature irrespective of the position of the sun with respect to the direction of movement of the vehicle.

Abstract: A system for monitoring carbon monoxide (CO) levels produced by the operation of a vehicle's engine. The system includes a detector in the vehicle's passenger compartment for detecting the concentration of CO inside the compartment and circuitry for generating a HIGH CO signal when the detected concentration of CO inside the compartment is greater than a predetermined level. The system disables the operation of the engine in response to the HIGH CO signal. The system also senses a status condition of the vehicle and inhibits the disabling of the engine when the status condition is sensed.

Abstract: An air conditioning system suitable for use in an electric vehicle for air-conditioning the driver and passenger room of the vehicle. The system basically comprises environment sensors, a warning device and a control device. The environment sensors detect the state of the environment in the vehicle room. In the control device, an air-conditioning switch is activated so that the output of the environment sensor is read. When the environment sensors produce an output indicative of an improper state of environment in the vehicle room, such an open window, an open door or an unmanned state of the vehicle room, the warning device is operated for a predetermined time period. Further, the air conditioner is deactivated when the output of any one of the environment sensors continues to indicate an improper environment condition after the predetermined period has elapsed.

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: An automotive vehicle equipped with an air bag system includes an interior gas discharge device for communicating a vehicle interior to the outside upon detection of a vehicular collision and a forced ventilation device provided for operation upon detection of the vehicular collision.

Abstract: In an air conditioner control device, edges of change of the sensor outputs are detected by the second derivative of the outputs of WO3 gas sensor for NOx detection. The edge represents that the sensor is exposed to diesel exhaust. Its response to diesel exhaust is quick and it does not affected much by the influence of the wind. When the edge is detected, an intake of an automobile ventilator is dosed and the inflow of contaminated outdoor air is interrupted. An AD convertor stored micro computer is used for processing the sensor signal. In order to compensate the shortage of resolution of the AD convertor, the outputs are first differentiated analogically, then amplified and converted to digital signals, and finally further differentiated digitally.

Abstract: A fragrance supplying apparatus for a vehicle for supplying an interior of an air-conditioning duct of the vehicle with a fragrance or deodrant so that the fragrance or deodrant is carried by a flow of air from a blower of the air-conditioning system into the cabin of the vehicle, the fragrance supplying apparatus including a fragrance supplying apparatus having control valves for controlling the supply of the fragrance or deodorant into the air-conditioning duct; a random number producing unit for producing random numbers; and a control unit for controlling the control valves of the fragrance supplying unit based on the random numbers to set varying patterns of supply and cessation of the fragrance or deodorant.

Abstract: A process for ventilating the interior of a motor vehicle having a closure which can be opened by a drive motor, an interior temperature-setpoint value generator, at least one interior temperature sensor, at least one outside temperature sensor and a logic component with inputs, outputs and a computer portion. Existing components (sensors, logic components) of different units are used and operatively linked so that the driver is largely relieved of the need to manipulate numerous controls.

Abstract: The quality of the external air is determined by means of a pollutant sensor. The quality of the internal air is determined by calculation taking account of the air quantities introduced from outside into the internal space. A decision between air supply operation and air recirculation operation is then made on the basis of a comparison of the air qualities inside and outside. The pollutant sensor is preferably located in a casing whose internal space is accessible to gases through an opening which is preferably sealed by a gas-permeable membrane.

Abstract: Vehicle passenger collision protection device comprising an inflatable air bag and an acceleration sensor for determining the event of an impending accident and triggering the inflation of the air bag. The acceleration sensor is connected to the air bag inflation pyrotechnic propellant charge which expansion for the inflation of the air bag whereby the propellant is ignited by the appropriate sensor signal. The sensor activates a fan to run at its maximum power output to remove the combustion gases and particulates which escape from the air bag into the passenger space. The fan may be operated as a blower to force fresh air in or as an exhaust fan to suck contaminated air out of the passenger compartment. The fan is preferably the conventional fan associated with the air conditioning system provided in the vehicle. Alternately, a separate fan is connected to the existing ventilation system and may substitute for or supplement the first fan.

Abstract: A process for cooling the interior of a motor vehicle and a roof system for its performance which has a roof part that can be opened by an electric motor. As a function of the interior temperature and an interior setpoint temperature, an automatic moving of the roof part that can be opened into a first open position takes place, in which a large roof opening is created. Time-dependent or as an alternative to this, when the temperature is less than a lower threshold temperature, an automatic moving of the roof part that can be opened into a second open position takes place, in which a smaller roof opening is created. The process and roof system enable quick removal of a build-up of heat when getting in the vehicle and in the beginning phase of a drive.

Abstract: An aftermarket automatic climate control system is disclosed for use in automobiles to be connected to existing heating, including a fan and fan motor to control the volume of air flow, said system including a control head located in the passenger compartment and a power box adapted to be connected with the automobile's electrical, heating and air conditioning systems, wherein said automatic climate control is connected to the fan positive supply lead of the fan motor.

Abstract: An interior climate control system in which a vehicle fan of the vehicle's own ventilation device, an openable and closable vehicle opening, such as a roof opening or a window opening, and a heater that can be operated independently of the engine are linked by an operating control circuit into a functional unit so that, when a predetermined, upper temperature limit is exceeded, a control circuit allocated to the operating devices for the openable and closable vehicle opening is controlled and activated, and so that, when the temperature falls below a predetermined, lower limit, the engine-independent heater is controlled and started. A pre-air conditioning operation or a preheating operation in the interior climate control system can be achieved by a remote control device and/or by a preadjustable timer device by the operating control circuit.

Abstract: An air cleaning system for a vehicle passenger compartment comprises of a first air cleaner unit and a second air cleaner unit. The first air cleaner unit is arranged to discharge air of the vehicle passenger compartment to the outside of the vehicle and to circulate the air upon cleaning the air. The second air cleaner unit is arranged to inhale outside air into the vehicle passenger compartment upon cleaning the outside air. When the air pollution level in the vehicle passenger compartment is high, the air cleaning system is operated to inhale outside air due to the operation of the second air cleaner unit and to discharge inside air due to the operation of the first air cleaner unit. Furthermore, the first air cleaner unit is formed in a thin-box shape and installed on a rear parcel shelf so as to improve the rearward visibility.