| 摘要 |
PROBLEM TO BE SOLVED: To provide an intercooler capable of precisely discharging dewing water in the intercooler without a risk of charge leakage causing reduction in supercharging efficiency. SOLUTION: A drain port 10 is arranged in a bottom part of a drain pan 5 of the intercooler 1 of a marine engine having a supercharger. A float vale 12 for closing by dead weight is seated on the drain port 10 from above so as to freely contact and separate, and while avoiding the leakage of charge by holding closing of the float valve 12 by internal pressure of the intercooler 1 in operation of an engine, the float valve 12 is automatically lifted by buoyancy of the dewing water at reduction time of the internal pressure caused by a stoppage of the engine, and the dewing water is discharged to thereby improve maintenability of the marine engine.
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