| 摘要 |
PURPOSE:To facilitate the adjustment of backlash, by supporting an intermediate gear on the eccentric portion of an intermediate shaft whose rotating position can be adjusted and by transmitting the rotation of a crankshaft to a top cam shaft through the intermediate gear and a chain transmission mechanism. CONSTITUTION:A V-engine 1 has a front and a rear cylinder 2, 3 which are inclined forward or backward and integrally provided on a crankcase 4. A crankshaft 5, a main shaft 6 and an accessory shaft 7 constituting a transmission, a damper shaft 8 and an output shaft 9 are supported in the crankcase 4. An intermediate shaft 72b having an eccentric portion 28b is supported between the crankshaft 5 and the top cam shaft 25b of a cylinder head 23b (another cylinder head 23a is provided but not mentioned here) so that the rotating position of the shaft 27b can be adjusted. An intermediate gear 32b is rotatably supported on the eccentric portion 28b of the intermediate shaft 27b so that the rotation of the crankshaft 5 can be transmitted to the cam shaft 25b through a gear 35b, the intermediate gear 32b and a chain transmission mechanism 37b. |
