Supply-air cooling system for an engine including a turbocharger

Claim 1

A supply-air cooling system for an engine having a turbocharger for operating an air-supply blower connected to a turbine driven by exhaust gas for forcibly supplying air to the engine through an intake duct, which comprises: (a) a first cooling fin means for cooling the supply air introduced into the engine, said cooling fin means being disposed upstream from the air-supply blower; (b) a second cooling fin means for cooling a passenger compartment, said second cooling fin means being connected in parallel with said first cooling fin means; (c) a compressor for compressing the refrigerant evaporated within said first and second cooling fin means after having absorbed heat therethrough. (d) a condenser for liquefying the refrigerant compressed by said compresser; (e) a liquid tank for temporarily storing the refrigerant liquefied in said condenser; (f) first and second throttles connected between said liquid tank and said first cooling fin means and between said liquid tank and said second cooling fin means, respectively, for gasifying the refrigerant stored in said liquid tank; (g) an electromagnetic valve for opening and closing a duct disposed between said liquid tank and said first throttle; (h) a throttle switch actuated when an accelerator pedal is depressed beyond a predetermined point, thereby detecting a degree of engine load; and (i) a control unit for outputting a signal to said electromagnetic valve to open said valve when said throttle switch detects that engine load is heavy, whereby the supply-air cooling system is used in common with the passenger compartment cooling system when engine load rises beyond a predetermined value.