公开(公告)号：US20190143801A1

公开(公告)日：2019-05-16

申请号：US15811735

申请日：2017-11-14

Applicant: GM Global Technology Operations LLC

Inventor： Joseph R. Littlefield ,  Alan G. Holmes ,  Rebecca K. Risko Cattell

IPC: B60K6/365 ,  F16H3/72 ,  F16H3/66 ,  B60K6/48

Abstract: A vehicle powertrain includes first and second power sources and a transmission assembly having first and second input members and an output member. The transmission assembly also includes a first planetary gear-set connected to the first input member and a second planetary gear-set connected to the second input and the output members. The transmission assembly additionally includes a transmission housing retaining the first and second gear-sets. Furthermore, the transmission assembly includes a first torque-transmitting device for connecting one first gear-set node to the housing and a second torque-transmitting device for connecting a first gear-set node not connected to the housing to one second gear-set node. One first gear-set node is directly and continuously connected to one second gear-set node. The first power source is operatively connected to a node of the first gear-set and the second power source is operatively connected to a node of the second gear-set.

公开(公告)号：US10124661B1

公开(公告)日：2018-11-13

申请号：US15495438

申请日：2017-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph R. Littlefield ,  Alan G. Holmes ,  Rebecca K. Risko Cattell

IPC: B60K6/365 ,  F16H3/72 ,  B60K6/48

Abstract: A power-split hybrid powertrain for a vehicle includes a first power-source configured to generate a first output torque, a second power-source configured to generate a second output torque, and a transmission assembly having a transmission input member. The powertrain also includes a planetary gear-set having first, second, and third nodes, wherein each of the three nodes is operatively connected to a separate one of the first power-source, second power-source, and transmission input member. The powertrain additionally includes a housing configured to retain the planetary gear-set. Also, the powertrain includes a first torque-transmitting device configured to selectively connect to the housing the node that is operatively connected to the first power-source. Furthermore, the powertrain includes a second torque-transmitting device configured to selectively connect the node that is operatively connected to the first power-source to the node that is operatively connected to the second power-source.

公开(公告)号：US20180231064A1

公开(公告)日：2018-08-16

申请号：US15434526

申请日：2017-02-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph R. Littlefield ,  Jonathan Boyd

IPC: F16D11/16 ,  F16D23/12

CPC classification number: F16D11/16 ,  F16D23/12 ,  F16D2023/123

Abstract: A dog clutch for a vehicle transmission includes a driving member configured to rotate about an axis and including a cavity extending radially from the axis, a driving tooth slidably movable within the radially extending cavity, a driven member coaxially surrounding the driving member and including a radially inward extending driven tooth axially aligned with the driving tooth, an actuator shaft coaxially positioned within the driving member and movable along the axis, a retainer on the actuator shaft, a bullet actuator coaxially mounted on the actuator shaft, and a biasing member coaxially mounted on the actuator shaft and positioned between the bullet actuator and the retainer.

公开(公告)号：US20180112755A1

公开(公告)日：2018-04-26

申请号：US15334333

申请日：2016-10-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph R. Littlefield ,  Alan G. Holmes

IPC: F16H37/08 ,  B60K6/52 ,  B60K6/48 ,  B60K6/40

CPC classification number: F16H37/082 ,  B60K6/40 ,  B60K6/48 ,  B60K6/52 ,  B60K2001/001 ,  B60K2006/4833 ,  B60Y2200/92 ,  B60Y2400/73 ,  B60Y2400/80 ,  B60Y2400/82 ,  Y10S903/911 ,  Y10S903/916 ,  Y10S903/951

Abstract: A final drive assembly for a vehicle drive axle having first and second axle-shafts that are configured to rotate about a common first axis. The final drive assembly includes a first gear-set configured to be operatively connected to the first axle-shaft. The final drive assembly also includes a second gear-set configured to be operatively connected to the second axle-shaft. The final drive assembly additionally includes an electric motor configured to provide an electric motor torque input to each of the first and second gear-sets and arranged on a second axis that is parallel to the first axis.

公开(公告)号：US09840140B1

公开(公告)日：2017-12-12

申请号：US15229864

申请日：2016-08-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alan G. Holmes ,  Joseph R. Littlefield

IPC: B60K6/543 ,  B60K6/365 ,  F16H3/72

CPC classification number: B60K6/365 ,  B60K6/387 ,  B60K6/445 ,  B60K6/543 ,  B60K2006/4841 ,  F16H3/728 ,  F16H2200/2007 ,  F16H2200/201 ,  F16H2200/2041 ,  F16H2200/2043

Abstract: Disclosed are electrically variable transmissions (EVT), methods for making and for using EVTs, and hybrid electric vehicles with EVTs. Presented is a multi-speed power transmission for a motor vehicle with an engine, two electric motors, and a final drive. The transmission includes an input member connectable to the engine, an output member connectable to the final drive, and a stationary member connectable to a gear train. First and second torque-transmitting devices (TTD) respectively connect to the first and second motors. The transmission also includes a compound planetary gear arrangement with four junction points defined by two interconnected planetary gear sets. The first TTD selectively connects the first motor to the first junction point, while the second TTD selectively connects the second motor to the fourth junction point via the gear train. The input member connects at the second junction point, whereas the output member connects at the third junction point.