A rotary engine, comprising:
- means for compressing fresh air;
- an external pressure vessel;
- an internal pressure vessel inside said external pressure vessel, said internal pressure vessel having walls enclosing a combustion chamber therein;
- a fuel nozzle in said walls opening into said combustion chamber;
- means for pumping fuel into said fuel nozzle;
- means for guiding compressed air compressed by said compressing means into said internal pressure vessel;
- means for spraying water into the compressed air guided by said guiding means whereby the compressed air guided into said internal pressure vessel carries the water therewith into said internal pressure vessel, said guiding means including means directing at least a portion of the compressed air and water carried therewith along said wall so as to cool said wall and be converted to compressed steam by heat in said wall and for directing the at least part of the compressed air and steam into said fuel nozzle so as to mix with the fuel pumped into said fuel nozzle to form a compressed air and steam/fuel mixture and be carried therein into said combustion chamber;
- an igniter in said combustion chamber for igniting the fuel in the mixture to produce a high temperature, high pressure gas;
- an output shaft;
- and
- means for converting the pressure of the high pressure gas produced in said combustion chamber into rotative force applied to said output shaft, said converting means including a dynamic rotor cylinder, a dynamic rotor eccentrically rotatably mounted in said dynamic rotor cylinder, means for directing the high pressure gas produced in said combustion chamber into a high pressure space in said dynamic rotor cylinder so as to press against said dynamic rotor and rotate said dynamic rotor eccentrically in said dynamic rotor cylinder, said dynamic rotor being coupled to said output shaft so as to rotate said output shaft when said dynamic rotor rotates;
- said converting means including a hollow shaft, said dynamic rotor being eccentrically fixed to said hollow shaft, said dynamic rotor cylinder having a cylindrical interior surface and having means for, together with said dynamic rotor, separating the space between said dynamic rotor and said cylindrical interior surface into said high pressure space and a low pressure space sealingly separated from said high pressure space;
- said hollow shaft having a long hollow shaft portion having a porcelain head-insulating layer formed on the inner surface thereof and defining an exhaust passage on one side of said dynamic rotor, and a short hollow shaft portion defining an intake passage on the other side of said dynamic rotor;
- said dynamic rotor having a hollow internal space and an inclined partition in said internal space separating said internal space into a first hollow rotor portion communicating with said high pressure space and the interior of said short hollow shaft portion, and a second hollow rotor portion communicating with said low pressure space and the interior of said long hollow shaft portion, said high pressure gas directing means including said interior of said short hollow shaft portion, said interior of said short hollow shaft portion communicating with said combustion chamber;
- said compressing means comprising a compressor, a compressive rotor cylinder, a compressive rotor having a sleeve sleeved over said long hollow shaft portion so as to eccentrically mount said compressive rotor on said hollow shaft for eccentric rotation in said compressive rotor cylinder, means for drawing fresh air into said compressive rotor cylinder, means for rotatively decouplably coupling said starter motor and coupling said dynamic rotor, to said compressive rotor so as to compress the fresh air drawn into said compressive rotor cylinder by rotating said compressive rotor in said compressive rotor cylinder, and means for directing air compressed in said compressive rotor cylinder into said compressor for further compression;
- said rotary engine further comprising a first side cover sealingly covering one side of said compressive rotor cylinder, and a second side cover sealingly covering one side of said dynamic rotor cylinder, said first side cover having a first flange and a first main bearing in said first flange rotatively supporting said sleeve and said long hollow shaft portion therein, said second side cover having a second flange and a second main bearing in said second flange rotatively supporting said short hollow shaft portion therein.