A method for preventing vehicle windscreen fogging or re-freezing includes calculating a windscreen interior surface dew point temperature value and/or windscreen interior surface fogging and/or exterior surface re-freezing probability value, and providing only a sufficient conditioned airflow to the windscreen to prevent the calculated probability value from exceeding a predetermined fogging and/or re-freezing risk threshold value. One or more controllers perform the calculating, and actuate elements of a vehicle HVAC system to provide only a sufficient conditioned airflow to cause a windscreen interior surface temperature value to exceed the windscreen interior surface dew point temperature value or to cause a windscreen exterior surface temperature value to exceed a windscreen exterior surface freezing temperature. Inputs influencing the windscreen interior surface fogging and/or exterior surface re-freezing probability value and/or the windscreen direct dew point temperature value are used to adjust the threshold values. Systems for accomplishing the described methods are provided.


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    Title :

    ЭНЕРГОСБЕРЕГАЮЩЕЕ УСТРАНЕНИЕ ЗАПОТЕВАНИЯ И ПРЕДОТВРАЩЕНИЕ ПОВТОРНОГО ЗАМЕРЗАНИЯ ОКОН ТРАНСПОРТНОГО СРЕДСТВА


    Publication date :

    2018-04-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Russian


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht