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US 2016/0102735 A1Published application
Multi-Speed Transmission
AssigneeFord Global Technologies, LLC
InventorDavid Allen Janson
Life of this patent
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Abstract
A family of transmission gearing arrangements provides between eight and ten forward speed ratios and a reverse speed ratio. Three planetary gear sets are located on the input axis and a fourth planetary gear set is located on an offset axis. Axis transfer gears convey power between the input axis and the offset axis. One axis transfer gear is supported by a front support while another is supported by a center support. The center support also supports a clutch module and supplies pressurized fluid to engage the clutches in the clutch module.
Claims21
A transmission comprising:
- an input shaft configured to rotate about an input axis;
- an output shaft configured to rotate about an output axis offset from the input axis;
- first, second, third, and fourth shafts configured to rotate about the input axis;
- fifth and sixth shafts configured to rotate about the output axis;
- a first gearing arrangement configured to selectively impose an overdrive relationship between the second shaft and the first shaft;
- a second gearing arrangement configured to fixedly impose a linear speed relationship among the first shaft, the input shaft, and the third shaft;
- a third gearing arrangement configured to fixedly impose a linear speed relationship among the fifth shaft, the output shaft, and the sixth shaft;
- a fourth gearing arrangement configured to fixedly impose a proportional speed relationship between the second shaft and the fifth shaft;
- and
- a fifth gearing arrangement configured to fixedly impose a proportional speed relationship between the fourth shaft and the sixth shaft.
7 more elements
A transmission comprising:
- a transmission case;
- a center support fixedly coupled to the transmission case;
- a first axis transfer gear supported by the center support and located on a first side of the center support;
- and
- a clutch module having three clutches supported by the center support and located on a second side of the center support.
2 more elements
Dependencies are inferred from the claim text.