公开(公告)号：US10724610B2

公开(公告)日：2020-07-28

申请号：US16216404

申请日：2018-12-11

Applicant: GM Global Technology Operations LLC

Inventor： Edward W. Mellet ,  Alan G. Holmes

IPC: F16H3/62 ,  F16H3/72

Abstract: A hybrid powertrain includes an internal combustion engine and a multi-speed transmission coupled to the internal combustion engine. The multi-speed transmission includes an input member, an output member, and a first, second, third, fourth, and fifth planetary gear set each having a sun gear member, a planet carrier assembly member and a ring gear member. The multi-speed transmission further includes a first, second, third, fourth, and fifth planetary gear sets each having a sun gear member, a planet carrier assembly member and a ring gear member. The multi-speed transmission further includes seven torque-transmitting devices configured to selectively interconnect the first, second, third, fourth, and fifth planetary gear sets with one another in combinations of at least four to establish at least ten forward speed ratios and at least one reverse speed ratio between the input member and the output member.

公开(公告)号：US20200224754A1

公开(公告)日：2020-07-16

申请号：US16248208

申请日：2019-01-15

Applicant: GM Global Technology Operations LLC

Inventor： Alan G. Holmes ,  Joseph R. Littlefield ,  Brendan M. Conlon

IPC: F16H48/10 ,  F16H48/42 ,  F16H1/46

Abstract: A differential drive system includes an electric motor for generating an electric motor torque and an input planetary gear-set operatively connected to the electric motor to receive the electric motor torque. The input planetary gear-set has first, second, and third members. The first member receives the electric motor torque, the second member provides a first input torque in a first rotational direction in response to the electric motor torque, and the third member provides a second input torque in a second rotational direction, opposite the first direction, in response to the electric motor torque. The system also includes a first output gear-set operatively connected to the input planetary gear-set, and providing a first output torque in response to the first input torque. The system additionally includes a second output gear-set operatively connected to the input planetary gear-set and providing a second output torque in response to the second input torque.

公开(公告)号：US10704632B2

公开(公告)日：2020-07-07

申请号：US16137605

申请日：2018-09-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alan G. Holmes

IPC: F16D67/02 ,  F16H57/10 ,  F16D49/08 ,  F16D121/28 ,  F16H1/28 ,  F16D121/32 ,  F16H57/08 ,  F16D65/06

Abstract: The present disclosure provides a transmission clutch assembly having a drum, a brake band, a smart material band and an electrical circuit. The brake band substantially encircles the drum and includes first and second ends, a high friction inner surface, and a low friction outer surface. The smart material band includes a beginning end and a terminating end wherein the beginning end of the smart material band is coupled to the second end of the brake band while the terminating end of the smart material band is coupled to the first end of the brake band. The electrical circuit transfers an electrical current to the smart material band. The smart material band contracts when the electrical current is applied to the smart material band thereby drawing the first and second ends of the brake band closer and contracting the brake hand against the drum to restrict drum movement.

公开(公告)号：US20200173529A1

公开(公告)日：2020-06-04

申请号：US16786559

申请日：2020-02-10

Applicant: GM Global Technology Operations LLC

Inventor： Joseph R. Littlefield ,  Alan G. Holmes

IPC: F16H37/08 ,  B60K1/00 ,  B60K6/40 ,  B60K6/48 ,  B60K6/52

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：US10557536B2

公开(公告)日：2020-02-11

申请号：US16018541

申请日：2018-06-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph R. Littlefield ,  Alan G. Holmes

IPC: F16H37/08 ,  B60K1/00 ,  B60K6/40 ,  B60K6/48 ,  B60K6/52

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：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：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：US09950607B2

公开(公告)日：2018-04-24

申请号：US14939542

申请日：2015-11-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph Ralph Littlefield ,  Pete R. Garcia ,  Alan G. Holmes

IPC: B60K6/52 ,  B60K6/365 ,  B60K6/387 ,  B60K6/442 ,  F16H3/72 ,  F16H37/02 ,  B60K6/38

CPC classification number: B60K6/52 ,  B60K6/365 ,  B60K6/387 ,  B60K6/442 ,  B60K2006/381 ,  B60Y2200/92 ,  B60Y2400/73 ,  B60Y2400/82 ,  F16H3/725 ,  F16H37/02 ,  F16H2200/2007 ,  F16H2200/201 ,  F16H2200/2097 ,  Y02T10/6234 ,  Y02T10/6265 ,  Y10S903/911 ,  Y10S903/914 ,  Y10S903/916

Abstract: A powertrain includes an output member, and first and second simple planetary gear sets. The planetary gear sets each have a first, a second, and a third member including a sun gear, carrier, and ring gear member. The drive unit includes a single electric machine operable as a motor and having a rotor connected to rotate in unison with and drive the sun gear member of the first planetary gear set. An interconnecting member connects the second member of the first planetary gear set to rotate in unison with the first member of the second planetary gear set. The third member of the first planetary gear set or the second member of the second planetary gear set is continuously grounded to the stationary member or operatively connected to be driven by an engine. The third member of the second planetary gear set is continuously operatively connected to the output member.

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.