Brinks Gilson & Lione
Un-partitioned HVAC module control for multi-zone and high performance operation
A method controls the discharge of temperature-conditioned air from a plurality of zone outlets of an automotive HVAC system via an open architecture multi-zone HVAC unit having a single blower fan, an evaporator downstream of the blower and a heater downstream of the evaporator, wherein each zone in the module includes a temperature mix door for proportioning hot and cold air, which is controlled by a separate Discharge Temperature Maintenance control (DTM control), and an output valve for controlling a zonal output flow rate. The output valve of each zone outlet is placed in an output valve position associated with a target resistance; and the single blower fan is operated at a minimum voltage required for generating a total requested blower output flowrate.
MAHLE International GmbH
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Yanping Prasad S. Jeffrey C. Mingyu Wen
Xia Kadle Kinmartin Wang Liu