| 摘要 |
PURPOSE:To reduce the bending vibration through a simple structure by setting the reciprocating inertial masses in respective cylinders of an engine so that the mass at one end part side in the output shaft direction differs from that at the other end side so as to reduce the bending vibration. CONSTITUTION:A power plant system A is constituted by connecting a transmission 4 via a clutch 3 to the rear end part of the cylinder block 1a of an engine 1 having four pistons 2a through 2d in series. And, only the weight of piston 2a in the cylinder 5a at the forefront part of the engine f1 is made heavier than that of respective pistons 2b through 2d in the other cylinders, so that the bending vibration can be reduced by the amount of difference in weight. Accordingly, through a very simple structure, the bending vibration in an engine transmission system can be reduced. |
