| 摘要 |
PURPOSE:To protect a supercharger against muddy water, pebbles, and so on in an autocycle or the like with a two-cylinder four-stroke-cycle engine to be operated at mutual phase difference of 360 deg. by arranging the supercharger above a line connecting between a crank shaft and a front axle. CONSTITUTION:In an autocycle, a two-cylinder four-stroke-cycle engine 40 is equipped off to the rear of a steering head pipe 12 of a main frame 10, and its cylinders are respectively arranged to be operated at the phase difference of 360 deg. with each other. At this stage, a turbo supercharger 60 is arranged sideways in front of the engine 40, while an exhaust manifold 58 to its exhaust inlet 66 and the front end of an exhaust pipe 68 to its exhaust outlet are respectively connected. Meanwhile, the exhaust manifold 58 is constructed to be provided with branch pipe parts 58a and 58b connected to exhaust ports of cylinders 40A and 40B with almost equal length and thickness, and the turbo supercharger 60 can be arranged above a line A connecting between a crank shaft 43 and a front axle 37. |
