Multi-speed transmission
First Claim
Patent Images
1. 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.
0 Assignments
0 Petitions
Accused Products
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.
-
Citations
16 Claims
-
1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification