Brinks Gilson & Lione
HVAC module with anti-backflow control and method of operation
HVAC module has an air inlet, an evaporator downstream of the blower and a heater downstream of the evaporator, and a rear mixing zone downstream of the evaporator and the heater, wherein a control valve prevents cold air from flowing back towards the hot air by regulating the pressure of the cold air. A method is devised to control anti-backflow control valve of such an HVAC module by the steps of reading pressure and temperatures at various points in the HVAC module; setting air flow and temperature discharge targets; calculating the resistance of the control valve and a bland valve; determining corresponding control valve and blend valve positions; and moving the control valve and blend valve to those corresponding positions.
MAHLE International GmbH
B B B F B
B60H B60H B60H F24F B60H
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Prasad S. Wen Yanping Jeffrey C. Mingyu
Kadle Liu Xia Kinmartin Wang