Abstract: A rotary engine 1 includes a side housing 2, an intermediate housing 12, a rotor housing 3, a rotor 4 accommodated rotatably in the rotor housing 3; side seal grooves 6 formed on both side surfaces 5 and 25 of the rotor 4; springs 8 for urging side seals 7 fitted respectively in the side seal grooves 6 toward the side housing 2 and the intermediate housing 12, and flexible linear rollers 10 each accommodated between a side wall surface 9 of the side seal groove 6 and the side seal 7.

Abstract: A rotary engine that comprises a rotor having two side faces, a side housing disposed facing to one of the two side faces of the rotor and a center housing disposed facing to the other of the two side faces of the rotor. The side housing has an intake port formed therein. Also, the center housing has an intake port formed therein. The intake port of the center housing has an opening end which is dislocated from an opening end of the intake port formed in the side housing facing thereto to a retard side. A space is formed between the side face of the rotor and the center housing. And a relief hole is provided in the center housing in a dislocated portion of the opening end of the intake port of the center housing so as to escape a blow-bye gas pressure from the space.

Abstract: A rotary engine that comprises a rotor having two side faces, a side housing disposed facing to one of the two side faces of the rotor and a center housing disposed facing to the other of the two side faces of the rotor. The side housing has an intake port formed therein. Also, the center housing has an intake port formed therein. The intake port of the center housing has an opening end which is dislocated from an opening end of the intake port formed in the side housing facing thereto to a retard side. A space is formed between the side face of the rotor and the center housing. And a relief hole is provided in the center housing in a dislocated portion of the opening end of the intake port of the center housing so as to escape a blow-bye gas pressure from the space.

Abstract: A rotary engine is disclosed which comprises a rotor housing, a rotor fitted in the rotor housing so as to define a plurality of operating chambers in cooperation with the inner wall surface of the rotor housing and produce a planetary rotation of itself inside the rotor housing, apex seal members severally accommodated inside seal grooves formed at the apexes of the rotor along the axis of rotation of said rotor, and pressure means disposed between the respective apex seal members and the rotor so as to press the apex seal members against the inner wall surface of the rotor housing by virtue of the pressure of a gas emanating from the operating chambers.

Abstract: A rotary engine in which rollers are inserted between the side wall of a seal groove and an apex seal such that the side wall of the seal groove and the apex seal are brought into rolling contact, the rollers are enhoused within a recessed groove formed in the side wall of the seal groove or in the side surface of the apex seal, and both ends of the recessed groove are enhoused in the corner seals assembled at both ends of the rotor so that the recessed groove is sealed.