Heat energy management system for motor vehicle, has inverting unit permitting flow of refrigerant to compressor when unit is in position identical to pump mode position, for obtaining functioning based on evaluation mode of calories

摘要

The system (10) has a heat exchanger (80) evaporating a refrigerant circulating in a reversible refrigerating loop (14). An inverting unit (68) with a four way valve inverts functioning cycle of the loop between refrigerating and heat pump mode positions. A compressor (66) collects energy from expansion of the refrigerant at vapor state. The unit permits a flow of the refrigerant from the exchanger to the compressor when the unit is in a position identical to the heat pump mode position, for obtaining a functioning based on an evaluation mode of calories conveyed by the refrigerant. An independent claim is also included for a method of managing energy in a motor vehicle.