| 摘要 |
PURPOSE:To obtain the small-sized and lightweight engine by fitting a pair of pistons formed integrally by a connection part having a circular inner wall into a pair of cylinders in coaxial symmetry and fitting the crank pin of a crankshaft into an eccentric hole of a disc rotor fitted into a disc inner wall. CONSTITUTION:A pair of cylinders 2 and 2 are arranged in coaxial symmetry having a crankshaft 1 as center, and a piston 3 is fitted in free reciprocating movement onto each cylinder 2. The both pistons 3 and 3 are jointed each other by integrally forming a circular inner surface wall 3c having the axis X-X vertical to the shafts Y-Y, and a disc rotor 4 is rotatably fitted on the circular inner surface wall 3c. The crank pin 1a of a crankshaft 1 is inserted into a penetration hole 4a formed at the eccentricity point of the rotor 4. A spark plug 2b, an intake port 2c and an exhaust port 2e which are opened and closed by an intake valve 2d and exhaust valve 2f are formed, in close to a combustion chamber 2a dividedly formed from the piston 3 and the cylinder 2, and a desired engine can be constituted. |
