Methods, systems, and apparatus for a control system that improves defroster performance in a vehicle by reducing rear heater core heat rejection to increase heat availability to the defroster. The control system includes a rear heating, ventilation and air conditioning (HVAC) unit configured that moves air into the vehicle. The control system 100 includes a memory for storing multiple blower maps. The control system includes an electronic control unit connected to the rear HVAC unit and memory. The electronic control unit is configured to determine a mode for a front HVAC. The electronic control unit is configured to obtain from the memory a blower map for the rear HVAC unit from the multiple blower maps based on the mode. The electronic control unit is configured to determine an airflow rate for the air based on the obtained blower map and control an amount of air outputted.
Variable rear HVAC blower maps for improved defroster performance
2020-08-18
Patent
Electronic Resource
English
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 / B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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