| 摘要 |
Disclosed is an auxiliary drive arrangement having a variable speed transmission 18, the transmission input being coupled via a drive coupling 1 to an output drive of a prime mover and the transmission output being coupled to an auxiliary device 30, wherein the drive coupling permits rotation of the prime mover output drive relative to the transmission input. Preferably the transmission is a traction drive continuously-variable transmission, the prime mover is an internal combustion engine and the auxiliary device is a supercharger or centrifugal compressor. The drive coupling may comprise a one-way and/or torsional coupling. The transmission may be a full toroidal variator comprising tilting rolling elements as torque transfer elements and races as drive elements, and means for applying an end load to at least one race in order to generate a contact force between the rolling elements and races, for example a cam. The drive coupling alleviates the effects of uneven power delivery to the crankshaft as a result of firing events of the engine. |
