| 摘要 |
A motor-compressor assembly (6) for a refrigerating and/or conditioning system of a vehicle, said system (1) having a refrigerating circuit (2) with a condenser (3) and an evaporator (5) for carrying out a refrigeration cycle on a refrigerant fluid. The motor-compressor assembly (6) has an electric motor (7) and a compressor (8) connectable in the refrigerating circuit (2) and actuated by the electric motor (7). The casing (15) of the electric motor (7) has a sealed chamber (16) connectable, via a fluid-intake pipe (19), to the refrigerating circuit (2) in such a way that part of the refrigerant fluid coming from the condenser (3) can circulate and evaporate in the chamber (16). The motor-compressor assembly (6) has at least one valve (20, 27) set in the fluid-intake pipe (19) and a control unit (21) for controlling the valve (20, 27) so as to enable or prevent circulation of the refrigerant fluid in the chamber (16) as a function of the measured parameters (T, P).
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