Patent ID: 7264046

Claim:
A device for temperature control in a vehicle with a main engine, said device comprising: refrigerant means forming a refrigerant circulation contour including at least a refrigerant, and a compressor for compressing the refrigerant; coolant means forming a coolant circulation contour including a coolant deployed for cooling the main engine and for heating and cooling the vehicle interior, a heating portion of the coolant contour, a cooling portion of the coolant contour being particularly cooled by the refrigerant via heat exchange, and a heat exchanging means providing said heat exchange; a temperature sensing means cooperating with the heat exchanging means and substantially regulating the temperature of said coolant; a plurality of air temperature regulating units disposed in the vehicle interior, said regulating units being controllably alternatively connected to said heating portion or said cooling portion of the coolant contour; a substitute engine means installed in the vehicle, powered separately from and generally consuming less power than the main engine; and hydraulic driving means forming a hydraulic circulation contour including a predetermined operating liquid, a hydraulic motor capable of rotating said compressor, a first hydraulic pump capable to create a predetermined pressure of the operating liquid in the hydraulic circulation contour for driving the hydraulic motor, a first clutch, regulated by said temperature sensing means, controllably engaging and disengaging the first pump with the main engine, a second hydraulic pump capable to create a predetermined pressure of the operating liquid in the hydraulic circulation contour for driving the hydraulic motor, and a second clutch, regulated by said temperature sensing means, capable to controllably engage the second pump with the substitute engine means when the first pump being disengaged from the main engine, and disengage the second pump from the substitute engine means when the first pump being engaged with the main engine.