Cooling system in motor vehicle
AssigneeNihon Radiator Co., Ltd.
InventorYoshiaki Hidaka
Life of this patent
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Abstract
Herein disclosed is a cooling system for use with an internal combustion engine which is operated on evaporable fuel supplied from a fuel tank. The cooling system comprises a tube extending from the fuel tank to a venturi throat portion of an air induction passage of the engine, an expansion valve connected to the tube and opening the tube when a pressure in the tube downstream of the valve is reduced to a certain degree, an evaporator device connected to the tube at a position downstream of the expansion valve, and a structure for defining an enclosed space about the evaporator device.
Claims9
A cooling system for use with a fuel injected engine which is operated on evaporable fuel supplied from a fuel tank through a fuel supply line to at least one fuel injection valve, said cooling system comprising:
- a tube extending from said fuel tank to a given portion of an air induction part of the engine where a vacuum is produced under operation of the engine;
- said tube having a nozzle portion extending into an exterior of said given portion;
- an expansion valve connected to a part of said tube between said fuel tank and said nozzle portion, said expansion valve opening the tube when a pressure in the tube downstream of the valve is reduced to a certain degree;
- an evaporator device connected to said tube between said expansion valve and said nozzle portion;
- and
- means for defining an enclosed space about said evaporator device;
- a fuel return line to return a portion of the fuel to the fuel tank during operation of the engine;
- and
- a pressure regulator valve connecting the return line to the fuel supply line for controlling the amount of fuel supplied to the engine.
Dependencies are inferred from the claim text.