公开(公告)号：US10948067B2

公开(公告)日：2021-03-16

申请号：US16108160

申请日：2018-08-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Christopher G. Benson ,  Arvo J. Siismets ,  Nathan J. Hankins

IPC: F16H55/14 ,  F16H55/06 ,  F16H1/06 ,  F16H55/08 ,  F16H55/16

Abstract: A transmission includes an input drive shaft, a drive gear, an idler gear, and a driven gear. The drive gear is rotationally fixed to the input drive shaft which, in turn, may but not necessarily, be powered by an engine. The idler gear may include a second set of gear teeth mounted to a bearing wherein the second set of gear teeth are formed from polymeric material. The second set of gear teeth for the idler gear may be in meshing engagement with the first set of gear teeth. The driven gear may include a third set of gear teeth in meshing engagement with the second set of gear teeth. The driven gear may be rotationally fixed to a pump shaft for a transmission pump. The input drive shaft, the drive gear, the idler gear, and the driven gear are configured to power a transmission pump.

公开(公告)号：US09702450B2

公开(公告)日：2017-07-11

申请号：US14540751

申请日：2014-11-13

Applicant: GM Global Technology Operations LLC

Inventor： Tejinder Singh ,  Boris Burgman ,  Arvo J. Siismets

IPC: F16H9/26 ,  F16H57/04 ,  F16H9/18 ,  F16H37/02

CPC classification number: F16H57/0484 ,  F16H9/18 ,  F16H37/022

Abstract: A continuously variable automatic transmission having a direction selection mechanism with both friction and binary torque transmitting devices. The transmission includes a torque converter which drives a ring gear of a planetary gear assembly. The sun gear of the planetary assembly drives the input of a variable ratio device. In one embodiment, the friction brake is disposed between a planetary gear carrier and a stationary housing or ground and is engaged to provide reverse direction of travel. The binary clutch is disposed between the ring gear and the planet carrier and, when engaged, locks the planetary gear assembly and provides forward direction of travel. In other embodiments, a binary brake is disposed between the planetary gear carrier and the housing and is engaged to provide reverse travel and a friction clutch is disposed between the ring gear and the planet carrier and, when engaged, locks the planetary assembly and provides forward travel.

公开(公告)号：US20200063848A1

公开(公告)日：2020-02-27

申请号：US16108160

申请日：2018-08-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Christopher G. Benson ,  Arvo J. Siismets ,  Nathan J. Hankins

IPC: F16H55/06 ,  F16H1/06 ,  F16H55/16 ,  F16H55/08

Abstract: A transmission includes an input drive shaft, a drive gear, an idler gear, and a driven gear. The drive gear is rotationally fixed to the input drive shaft which, in turn, may but not necessarily, be powered by an engine. The idler gear may include a second set of gear teeth mounted to a bearing wherein the second set of gear teeth are formed from polymeric material. The second set of gear teeth for the idler gear may be in meshing engagement with the first set of gear teeth. The driven gear may include a third set of gear teeth in meshing engagement with the second set of gear teeth. The driven gear may be rotationally fixed to a pump shaft for a transmission pump. The input drive shaft, the drive gear, the idler gear, and the driven gear are configured to power a transmission pump.