| 摘要 |
PURPOSE: A fuel injector is provided to prevent the degradation of the performance of an engine by cooling fuel of high temperature when the fuel is recovered to a fuel return line. CONSTITUTION: In a fuel injector, an auxiliary evaporator is installed on a refrigerant compression and supply line in parallel with a main evaporator. The auxiliary evaporator is formed in a coil shape and wound on the circumference of a fuel return line(22) of a fuel supply device(1). Upon turning on the air conditioning system, a compressor is driven to compress a refrigerant. Then, evaporation of the refrigerant occurs in the auxiliary evaporator. With response to the evaporation of the refrigerant, ambient heat is absorbed and the fuel return line is in an atmosphere of cold air. By the cold air generated around the auxiliary evaporator, the high temperature fuel in the fuel return line is cooled. Further, the degradation of the performance of an engine is avoided.
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