Transmission and driveline having a tilting ball variator continuously variable transmission
AssigneeDana Corporation
InventorsKenneth E. Cooper, Mark R. J. Versteyhe
Life of this patent
Estimating the term…
Abstract
A transmission is provided. The transmission includes an input portion drivingly engaged with a power source, a planetary gear, a continuously variable variator, and a clutching device. The planetary gear arrangement has a portion drivingly engaged with the input portion. The continuously variable variator includes a portion which is drivingly engaged with at least one of the planetary gear arrangement and the input portion. The clutching device may be selectively drivingly engaged with a portion of the continuously variable variator. The clutching device and the planetary gear arrangement facilitate a transition between at least two operating modes of the continuously variable variator.
Claims11
A continuously variable transmission comprising:
- an input portion drivingly engaged with a power source;
- a planetary gear arrangement comprising:
- a carrier,
- a plurality of planet gears,
- a sun gear, and
- a ring gear, wherein the carrier is drivingly engaged with the input portion;
- a continuously variable tilting ball variator comprising:
- a first drive ring,
- a plurality of variator ball assemblies each assembly having a variator ball and variator axis, tiltably disposed on and drivingly engaged with a variator ball carrier coupled to a variator shaft,
- the variator shaft, and
- a second drive ring, wherein the variator is drivingly engaged with the planetary gear arrangement and the input portion;
- and
- a first clutching device configured to be selectively drivingly engaged with a portion of the continuously variable tilting ball variator, wherein the first clutching device and the planetary gear arrangement facilitate a transition between at least two operating modes of the continuously variable tilting ball variator.
Dependencies are inferred from the claim text.