To improve the efficiency, when the heat quantity applied to a heater is small.
This external combustion engine includes: a tubular main container 11, in which a working medium 15 is flowably enclosed in a liquid state; a heating part 11a formed on the portion of the main container 11 on one end side and evaporating a part of the working medium 15 in the main container 11 through heating; a cooling part 11b formed on the portion of the main container 11 further on the other end side than the heating part 11a and cooling and condensing the vapor of the working medium 15 evaporated by the heating part 11a; an output part 12, communicating with the other end of the main container 11 and converting the displacement of the liquid phase portion of the working medium 15 into a mechanical energy and outputting the mechanical energy; and control means 27, 33, 35 for alternately performing heat accumulation modes S140, S240 for accumulating heat in the heating part 11a, by stopping the displacement of the liquid phase portion of the working medium 15 and output modes S130, S210 for extracting the output from the output part 12, by allowing displacement of the liquid phase portion of the working medium 15.
YATSUKA SHINICHI
NIIYAMA YASUTOKU
KANEKO TAKU
SHIMODA MAMORU
Takahiro Miura
Fumihiro Mizuno
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