| 摘要 |
An objective of the present invention is to provide a structure for sealing a piston of an oval rotor in an internal combustion engine with a triangular cylinder which can greatly reduce wear of a cylinder and a seal. An edge chamber (9) and a plurality of seals installed on both sides of the edge chamber (9) at regular intervals are combined into a single set. The seals in one set comprise a plurality of pressure chambers (2) and oil chambers (1). The oil chambers (1) each comprises: a body (1-1) of a rod shape; an oil groove (1-2) formed lengthwise across the entire upper portion of the body (1-1); an oil hole (1-3) separated from the oil groove (1-2) and penetrated downwards; and a corner chamber (1-6) of a cylindrical shape which is installed on a front surface of a body of the oil chamber (1), has a diameter larger than the body, and comprises a through hole disposed therein. The pressure chambers (2) each comprises: a cuboid pressure chamber body (20) of a rod shape; and a pressure corner chamber (26) which is installed on a front surface of the pressure chamber body (20), has a diameter larger than the body, and comprises a through hole disposed therein. |
