| 摘要 |
An engine that can suppress decrease in a function of causing an unburned gas to remain in a combustion chamber is provided. An engine 12 has a combustion chamber 18 provided inside a cylinder 19, in which an exhaust port 32 connected to the combustion chamber 18 is opened and closed by a piston 22 reciprocating inside the cylinder 19. The engine 12 includes: a first exhaust passage 31 provided in the cylinder 19 and connected to the exhaust port 32; an opening 31a formed on the downstream end of the first exhaust passage 31 in a direction of discharge of a combustion gas discharged from the exhaust port 32; and a second exhaust passage 36 connected to the opening 31a via a connection passage 41. The center E of the connection passage 41 in a cylinder axial direction and the center C of the opening 31a in the cylinder axial direction are arranged at different positions from each other in the cylinder axial direction. |
