| 摘要 |
An external combustion engine suppressing boiling of cooling water in a cooler. A heater 12 uses waste heat of a heat engine 1 as a heat source to heat a working medium to make it evaporate. A cooler 13 uses cooling fluid cooling the heat engine 1 as a cooling source to cool steam of the working medium and make it condense. A heated part temperature reducing means is provided for reducing a temperature Th of the heated part 12a when the amount of heat radiated from the cooling fluid to the outside becomes smaller than the amount of heat transferred from the working medium to the cooling fluid. Due to this, it is possible to suppress the rise of the temperature Tw of the cooling fluid in the cooler 13, so it is possible to suppress boiling of the cooling water in the cooler 13.
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