| 摘要 |
PURPOSE: To minimize and lighten an internal combustion engine by engaging a sleeve valve which constitutes a cylinder rotatable and rotating with interlocking with the sleeve valve and rotary intake valves so as to open and close an exhaust opening freely. CONSTITUTION: On a two (2) cylinder four (4) cycle engine 10, a cylinder sleeve (a cylinder valve) 80 is engaged reciprocally and rotatably with cylinders 18, 20 which is integrally formed at right and left crankcase portions 14, 16 of a crankcase 12, and a piston 54 is slidably engaged inside each sleeve 80. A crank axis 32 is supported with axis by an opposite end parts of crank case portions 14, 16 and a timing cover 62 which has a pair of intake opening 64, 66 is fastened with a bolt and rotary intake valves 68, 70 are provided at each intake openings 64, 66. And a connection between an opening 94 which is provided at the sleeve 80 and an exhaust opening 96 is opened and closed by driving the sleeve 80 interlocking with the valves 68, 70. |
