Patent ID: 10220674

Abstract:
A vehicle heating, ventilating, and air conditioning (HVAC) system can reduce a load applied to a vehicle powertrain during certain conditions. The system can include a compressor operable based on a first target evaporator outlet (TEO) temperature map. Systems and methods can determine if an HVAC system is activated, and whether an engine water temperature meets a forced HVAC recirculation intake threshold. Responsive to determining that the engine water temperature meets the forced HVAC recirculation intake threshold, it can be determined if the engine water temperature meets a first threshold. Responsive to the recirculation mode air source being selected, determining if at least one measured vehicle condition meets predetermined criteria. Responsive to determining that the engine water temperature meets the first threshold, the compressor can be operated based on a second TEO temperature map, the second TEO temperature map including higher TEO temperatures than the first TEO temperature map.