Back to results
US 2006/0142111 A1Published application
Powertrain of an automatic transmission
OwnerDong Parkinventor
Life of this patent
Estimating the term…
Abstract
A compound planetary gear set is designed to have first and second planetary gear sets gear-meshed with each other and respectively disposed on primary and secondary input shafts, and multi-stage shifting is realized by operating operational members of such a compound planetary gear set according to a predetermined operational chart. As a result, length of an automatic transmission may be reduced and durability may be increased.
Claims37
A powertrain of an automatic transmission, comprising:
- a primary input shaft;
- a secondary input shaft disposed in parallel with the primary input shaft;
- and
- a compound planetary gear set including first and second planetary gear sets respectively disposed on the primary and secondary input shafts and forming a plurality of operational elements by externally gear-meshing a plurality of pairs of operational members of the first and second planetary gear sets.
1 more element
A powertrain of an automatic transmission, comprising:
- a primary input shaft;
- a secondary input shaft disposed in parallel with the primary input shaft;
- an output shaft disposed in parallel with the primary and secondary input shafts;
- a compound planetary gear set including first and second planetary gear sets disposed on the primary and secondary input shafts wherein the first and second planetary gear sets are externally gear-meshed with each other so as to form a plurality of operational element including first, second, third, and fourth operational elements;
- a speed reduction device reducing a rotation speed of the primary input shaft and selectively transmitting the reduced speed to the second input shaft and an operational member of the compound planetary gear set;
- a first clutch for transmitting the reduced speed of the speed reduction device to the first operational element;
- a second clutch variably connecting the third operational element and the primary input shaft;
- a third clutch for transmitting the reduced speed of the speed reduction device to the secondary input shaft;
- a first brake for stopping the third operational element;
- and
- a second brake for stopping the fourth operational element.
8 more elements
Dependencies are inferred from the claim text.