| 摘要 |
PURPOSE:To eliminate the vibration caused through the primary inertia and to cool the clutch effectively by adjoining the first and second cylinders in the axial direction of crank shaft while arranging a synchronous system between both cylinders then coupling said synchronous system to the rear end of the drive shaft while mounting a clutch at the front end of the drive shaft. CONSTITUTION:First and second sylinders 51, 52 are arranged approximately in horizontal. Here, it is coupled such that the first and second pistons 41, 42 will move in the opposite directions while the first and second crank shafts 21, 22 will rotate synchronously in same direction. Consequently, all or the majority of secondary inertia as well as the primary inertia of the first and second piston system are balanced to eliminate or considerably reduce the vibration caused through the inertia. While since a clutch is mounted at the front end of the drive shaft, the clutch is not subjected to the heat produced by the cylinder and cooled by the travel wind resulting in the improvement of the durability. |
