公开(公告)号：US09964182B2

公开(公告)日：2018-05-08

申请号：US14871158

申请日：2015-09-30

Applicant: GM Global Technology Operations LLC

Inventor： Ravikanth G V ,  Nidhish Tripathi ,  Venu Ganti ,  Sandhu Kurian Kurian

IPC: F16H3/08 ,  F16H3/091 ,  F16H37/04

CPC classification number: F16H3/091 ,  F16H37/043 ,  F16H2200/0052

Abstract: A multi-stage transmission includes a first stage, a second stage, a final drive, and at least two torque transmitting devices. The at least two torque transmitting members selective couple the first stage, the second stage and the final drive with each other to produce a reverse gear or one of a plurality of forward gears.

公开(公告)号：US09803728B2

公开(公告)日：2017-10-31

申请号：US14861480

申请日：2015-09-22

Applicant: GM Global Technology Operations LLC

Inventor： Yogesh Kumar Dewangan ,  Venu Ganti

IPC: F16H9/10

CPC classification number: F16H9/10 ,  F16H55/54

Abstract: A continuously variable transmission pulley includes a body defining a hollow tube having a longitudinal central bore. Multiple cylinders are fixed to the body each having a cylinder bore in fluid communication with the longitudinal central bore. A piston is slidably positioned in the cylinder bore of each of the cylinders. A pressurized fluid present in the central bore acts equally against each of the pistons to equally outwardly displace the pistons. A biasing member is connected to each piston and is in direct contact with the pressurized fluid. A friction member is connected to a free end of each of the pistons. Diametrically opposed ones of the friction members define a pulley diameter that varies depending on a portion of the diametrically opposed ones of the pistons extending outwardly from the cylinders.

公开(公告)号：US20170082178A1

公开(公告)日：2017-03-23

申请号：US14861480

申请日：2015-09-22

Applicant: GM Global Technology Operations LLC

Inventor： Yogesh Kumar Dewangan ,  Venu Ganti

IPC: F16H9/10

CPC classification number: F16H9/10 ,  F16H55/54

Abstract: A continuously variable transmission pulley includes a body defining a hollow tube having a longitudinal central bore. Multiple cylinders are fixed to the body each having a cylinder bore in fluid communication with the longitudinal central bore. A piston is slidably positioned in the cylinder bore of each of the cylinders. A pressurized fluid present in the central bore acts equally against each of the pistons to equally outwardly displace the pistons. A biasing member is connected to each piston and is in direct contact with the pressurized fluid. A friction member is connected to a free end of each of the pistons. Diametrically opposed ones of the friction members define a pulley diameter that varies depending on a portion of the diametrically opposed ones of the pistons extending outwardly from the cylinders.