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公开(公告)号：US20190145500A1
公开(公告)日：2019-05-16
申请号：US15811736
申请日：2017-11-14
Applicant: GM Global Technology Operations LLC
Inventor： Joseph R. Littlefield , Alan G. Holmes , Rebecca K. Risko Cattell
IPC: F16H3/66
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 multiple node planetary gear-set connected to both input members and a second multiple node planetary gear-set connected to the output member. 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 second gear-set node to the transmission housing and a second torque-transmitting device for connecting one first gear-set node to one second gear-set node. One first gear-set node is directly and continuously connected to one second gear-set node. The first and second power sources are connected to the first gear-set, and the first power source is connected to the first gear-set node not directly and continuously connected to the second gear-set.
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公开(公告)号：US10167906B2
公开(公告)日：2019-01-01
申请号：US15214041
申请日：2016-07-19
Applicant: GM Global Technology Operations LLC
Inventor： Vijay A. Neelakantan , Joseph R. Littlefield , Lawrence A. Kaminsky
IPC: F16D11/00 , F16D25/061 , F16D25/08 , F16D11/14 , F16D13/52 , F16H1/28 , F16D121/04 , F16D121/14 , F16D127/06
Abstract: A clutch assembly having a first clutch member, a second clutch member axially slidable in a first axial direction to engage the first clutch member and in a second axial direction to disengage from the first clutch member, a spring biasing the second clutch member in one of the axial directions, a piston actuatable to move the second clutch member in the other of the axial directions, thereby overcoming a biasing force of the spring, and a latching device to selectively lock the piston in at least one of the first axial direction and second axial direction. The latching device includes a selectively retractable locking pin. The piston has an external surface defining a slot to receive the locking pin, thereby locking the piston in the first position or the second position. A method of operating the clutch assembly is provided.
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公开(公告)号：US20180304736A1
公开(公告)日：2018-10-25
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
CPC classification number: B60K6/365 , B60K6/48 , B60K2006/4816 , B60Y2200/92 , F16H3/724 , Y10S903/91
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.
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公开(公告)号：US20180112774A1
公开(公告)日：2018-04-26
申请号：US15299497
申请日：2016-10-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Joseph R. Littlefield , Dumitru Puiu
IPC: F16H63/34
CPC classification number: F16H63/3433 , F16H63/3466
Abstract: A vehicle includes a park actuator motor that is external to a transmission housing in the vehicle, a default to park mechanism that is internal to the transmission housing, and a park inhibit solenoid that is internal to the transmission housing.
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公开(公告)号：US20220136594A1
公开(公告)日：2022-05-05
申请号：US17085038
申请日：2020-10-30
Applicant: GM Global Technology Operations LLC
Inventor： Alan G. Holmes , Pete R. Garcia , Joseph R. Littlefield
Abstract: An electric drive unit clutch for an automobile includes a first rotatable shaft, a one-way clutch fixedly mounted onto the first rotatable shaft, a dog clutch slidingly mounted onto the first rotatable shaft and adapted to rotate with the first rotatable shaft, a clutch ring positioned between the one-way clutch and the dog clutch, and a second rotatable shaft rotatable engaged with the clutch ring, wherein the clutch ring is adapted to transfer rotational motion from the second rotatable shaft through the one-way clutch and the dog clutch to the first rotatable shaft.
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Patent Agency Ranking
公开(公告)号：US11035448B2
公开(公告)日：2021-06-15
申请号：US16786559
申请日：2020-02-10
Applicant: GM Global Technology Operations LLC
Inventor： Joseph R. Littlefield , Alan G. Holmes
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.
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公开(公告)号：US10982745B2
公开(公告)日：2021-04-20
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: F16H48/42 , F16H48/10 , F16H1/46 , B60K1/00 , F16H48/00 , F16H48/11 , B60K17/354 , B60K17/04 , B60K17/16 , B60K17/346
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.
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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
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.
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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
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.
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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
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.
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