| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid fuel cooler for an internal combustion engine capable of preventing the generation of fuel boiling bubbles caused by the rise of temperature of the internal combustion engine, and constantly and properly keeping an injection amount of the fuel per unit injection time. SOLUTION: This liquid fuel cooler comprises an internal heat exchanger and an external heat exchanger for respectively cooling the liquid fuel mounted inside and outside of a fuel cooler body having an inlet and outlet opening for the liquid fuel, and the internal heat exchanger and the external heat exchanger are respectively composed of at least a set of heat exchangers provided with the piping for passing heating medium fluid. The heating medium fluid in the internal heat exchanger is heated and vaporized by heat energy of the fuel of high temperature in the fuel cooler body, and the vaporized current is condensed by the external heat exchanger to be returned to the original heating medium fluid to flow into the internal heat exchanger again.
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