Geartrain for an automatic transmission
AssigneeHyundai Motor Company
InventorJong-Sool Park
Life of this patent
Estimating the term…
Abstract
A geartrain for an automatic transmission includes a first single planetary gearset having a first element being variably connected to an input shaft and a second element transferring power to a transfer shaft, a second single planetary gearset having a first element being fixedly connected to an element of said first single planetary gearset, and a second element transferring power to a transfer shaft, a third single planetary gearset having a first element being fixedly to an element of said second single planetary gearset, a second element being variably connected to the input shaft, and a third element being fixedly connected to another element of said second single planetary gearset and being variably connected to the transmission housing; and a plurality of friction members for the above variable connections.
Claims14
A geartrain for an automatic transmission, comprising:
- a first single planetary gearset comprising a first element variably connected to an input shaft and a second element for transferring power to a transfer shaft and a third element;
- a second single planetary gearset comprising a first element fixedly connected to an element of said first single planetary gearset and a second element for transferring power to said transfer shaft;
- a third single planetary gearset comprising a first element fixedly connected to an element of said second single planetary gearset, a second element variably connected to said input shaft, and a third element fixedly connected to a third element of said second single planetary gearset and variably connected to a transmission housing;
- first, second, and third clutch means for variably connecting the first and third elements of the first single planetary gearset, the first element of the second single planetary gearset and the first and second elements of the third single planetary gearset to each other and the input shaft to transform an input at the input shaft into five forward speeds and one reverse speed at the transfer shaft;
- and
- first brake means for variably connecting certain elements of the second and third single planetary gearsets to the transmission housing.
Dependencies are inferred from the claim text.