公开(公告)号：US20190011018A1

公开(公告)日：2019-01-10

申请号：US15641359

申请日：2017-07-05

Applicant: GM Global Technology Operations LLC

Inventor： Joseph R. LITTLEFIELD ,  Craig S. ROSS

IPC: F16H3/66 ,  F16H3/10 ,  F16H3/091

CPC classification number: F16H3/66 ,  F16H3/089 ,  F16H3/091 ,  F16H3/10 ,  F16H3/363 ,  F16H2200/0021 ,  F16H2200/2005 ,  F16H2200/2007 ,  F16H2200/201 ,  F16H2200/2023 ,  F16H2200/2035 ,  F16H2200/2069 ,  F16H2200/2084 ,  F16H2200/2097

Abstract: A powertrain includes an electric motor and a first planetary gear stage having a first rotatable member drivingly connected to the electric motor and at least one second rotatable member. A second planetary gear stage includes a third rotatable member drivingly connected to the at least one second rotatable member and includes at least one fourth rotatable member. One of the third rotatable member and the at least one fourth rotatable member is connected to an output member. A passive one-way clutch and a selectable one-way clutch are associated with at least one of the first and second planetary gear stages for varying operation of the first and second planetary gear stages based upon an operation state of the selectable one-way clutch and a direction of rotation of the electric motor.

公开(公告)号：US20180345949A1

公开(公告)日：2018-12-06

申请号：US15608384

申请日：2017-05-30

Applicant: GM Global Technology Operations LLC

Inventor： Alan G. HOLMES ,  Min-Joong KIM ,  Edward A. RAPA, JR. ,  Brendan M. CONLON ,  Joseph R. LITTLEFIELD ,  Donald L. DUSENBERRY

IPC: B60W10/115 ,  B60L15/20 ,  F16H61/70

CPC classification number: B60W10/115 ,  B60L11/18 ,  B60L15/20 ,  F16H61/702 ,  F16H2003/442

Abstract: An electric vehicle drive system includes an electric motor, first and second planetary gear sets, including sun gear, carrier and ring gear members, first and second output shafts, and a housing. The members of the first planetary gear set are connected with the electric motor, the first output shaft, and a member of the second planetary gear set. The members of the second planetary gear set are connected with the first planetary gear set, the housing, and the second output shaft. The first planetary gear set provides differential reduction and the second planetary gear set provides reversal and reduction. Optional clutches can provide the function of a limited slip differential and distribute torque preferentially to one output shaft or the other.