| 摘要 |
A multi-regime continuously variable ratio transmission CVT has a transmission input shaft 18, a transmission output shaft 30 and a ratio varying unit V having a rotating input 10 and a rotating output 12 which have coaxial rotational axes. A shunt comprising first and second epicyclic gear sets E1, E2 is connected across the ratio varying unit V. One epicyclic gear set E1 has an input C1 driven by the transmission input shaft 18 and an input S1 driven by one side of the ratio varying unit V and the other epicyclic gear set E2 has an input C2 from the first epicyclic gear set and an input S1 from one side of the ratio varying unit V. The first and second epicyclic gear sets E1, E2 rotate about a common axis and are offset with respect to, and parallel to, the rotational axes of the input 10 and output 12 of the ratio varying unit V. A clutch is operable to selectively connect the output A2 of the second epicyclic gear set E2 to the transmission output shaft 30. |
