| 摘要 |
The invention concerns a continuously variable transmission having a tran smission input (60) and a transmission output (114). The transmission has a variator (56). This is a device which transmits drive at steplessly variable ratio. It further comprises an epicyclic gear arrangement (58) incorporatin g a clutch arrangement (152). The epicyclic gear arrangement has three rotar y members. One of these is coupled to a planet carrier (86) having at least one planet gear (94). Another of the rotary members is coupled to a main gea r (90) meshing with the planet gear. The clutching arrangement serves to cou ple the remaining rotary member to either of first and second alternative ge ars (96, 98), both of which mesh with the planet gear and which rotate at di fferent speeds. One of the aforesaid rotary members is coupled to the transm ission input at a fixed drive ratio. One of them is coupled to the variator output. The last of the rotary members is coupled to the transmission output . By means of the clutching arrangement the transmission can be changed betw een first and second ratio ranges.
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