| 摘要 |
<p>A belt type continuous reduction gear mechanism (Tm) comprises a drive V-pulley (40); a driven V-pulley (41); and a V-belt (42) made to run under tension between said two V-pulleys (40, 41). Said drive V-pulley (40) is arranged coaxially with a start clutch (5c), which is arranged coaxially with the crankshaft (1) of an engine (E) and is constructed of a hydraulic multi-disc clutch, and has its external diameter reduced to substantially the same as that of said start clutch (5c) thereby to set the reduction ratio range at a relatively small value. Said driven V-pulley (41) is connected to an auxiliary reduction gear mechanism (Ta) of plural-step type for compensating the shortage of said reduction ratio range.</p> |
