| 摘要 |
A semi-automatic torque transmitting gearbox for a vehicle comprises an input member, first and second shafts co-axial with that member, a layshaft, gearing interposed between the input member and the layshaft and including freewheel means for permitting the layshaft to rotate faster than it can be driven by the input member through that gearing, gearing interposed between the first co-axial shaft and the layshaft which is of lower ratio than the first mentioned gearing, gearing interposed between the second co-axial shaft and the layshaft and including a disengagable clutch for positively connecting those shafts together via that gearing, a disengagable clutch for positively connecting together the first and second co-axial shafts, freewheel means for permitting the input member to rotate faster than the first co-axial shaft, and a disengagable clutch for positively connecting together the input member and the first co-axial shaft. |
