| 摘要 |
PURPOSE:To prevent a wheel-base from stretching, by forming a constitutional unit from cylinders, cylinder head, cylinder head cover, etc. of a front side cylinder and arranging the constitutional unit immediately below a radiator. CONSTITUTION:A front side cylinder 15a is constituted by concurrently providing horizontally three cylinders while a rear side cylinder 15b is concurrently provided vertically with three cylinders, and the both cylinders 15a, 15b are arranged to mutually form V-shape in a space, formed by a down tube 5, main tube 10 and seat pillar tube 8, simultaneously the front side cylinder 15a is located immediately below a radiator 25, then a structural unit, constituted by the cylinders, cylinder head and cylinder head cover, is placed appearing immediately below in front of the radiator 25. In this constitution, intake air is distributed to the cylinders 15a, 15b through intake pipes 20a, 20b and branch pipes 21a, 21b. Then the whole unit of an engine can be arranged to the side of a front wheel 28, thus a wheelbase can be decreased. |
