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公开(公告)号：US20250119029A1
公开(公告)日：2025-04-10
申请号：US18480655
申请日：2023-10-04
Applicant: GM Global Technology Operations LLC
Inventor： Suresh Gopalakrishnan , Craig S. Ross , Chandra S. Namuduri , Chunhao J. Lee , Thomas W. Nehl , Yulei Chen
IPC: H02K11/215
Abstract: An electric drive unit includes a housing and a rotor rotatably supported in the housing. The rotor includes a rotor shaft defining a rotor axis and a plurality of rotor laminations fixedly mounted to the shaft. The plurality of rotor laminations support a plurality of magnetic poles, and a hydraulic unit connected to the plurality of rotor laminations. The hydraulic unit has a magnetic shunt that is selectively shiftable relative to the plurality of magnetic poles. A position sensing system is operable to detect a rotational speed of the rotor and a position of the magnetic shunt relative to the plurality of magnetic poles. The position sensing system includes a rotor shaft position trigger coupled for rotation with the rotor shaft, and a magnetic shunt position trigger supported by the hydraulic unit.
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公开(公告)号：US11146132B2
公开(公告)日：2021-10-12
申请号：US16744616
申请日：2020-01-16
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Shawn H. Swales , Khwaja M. Rahman , Craig S. Ross , Goro Tamai
Abstract: A permanent magnet electric machine (PM machine) includes a rotor with rotatable magnets and a stator defining an air gap with the rotor. An actuator rotates the rotatable magnets at predetermined operating points through an angular distance sufficient for changing magnetic pole orientations of the rotatable magnets, and thus modifies magnetic flux linkage with stator windings across the air gap. Fixed magnets may be arranged around a circumference of the rotor. The actuator may be actively or passively driven. Flux-shunting elements are optionally disposed in the rotor to further modify the flux linkage. A gear set connected to torque transfer elements may be driven by the actuator to rotate the rotatable magnets. A vehicle includes drive wheels, a transmission, and the PM machine. A method controls magnetic flux linkage in the PM machine noted above.
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公开(公告)号：US10581287B2
公开(公告)日：2020-03-03
申请号：US15860239
申请日：2018-01-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Shawn H. Swales , Khwaja M. Rahman , Craig S. Ross , Goro Tamai
Abstract: A permanent magnet electric machine (PM machine) includes a rotor with rotatable magnets and a stator defining an air gap with the rotor. An actuator rotates the rotatable magnets at predetermined operating points through an angular distance sufficient for changing magnetic pole orientations of the rotatable magnets, and thus modifies magnetic flux linkage with stator windings across the air gap. Fixed magnets may be arranged around a circumference of the rotor. The actuator may be actively or passively driven. Flux-shunting elements are optionally disposed in the rotor to further modify the flux linkage. A gear set connected to torque transfer elements may be driven by the actuator to rotate the rotatable magnets. A vehicle includes drive wheels, a transmission, and the PM machine. A method controls magnetic flux linkage in the PM machine noted above.
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公开(公告)号：US10533640B2
公开(公告)日：2020-01-14
申请号：US15641359
申请日：2017-07-05
Applicant: GM Global Technology Operations LLC
Inventor： Joseph R. Littlefield , Craig S. Ross
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.
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公开(公告)号：US20150252877A1
公开(公告)日：2015-09-10
申请号：US14201225
申请日：2014-03-07
Applicant: GM Global Technology Operations LLC
Inventor： Edward W. Mellet , Craig S. Ross , James M. Hart
IPC: F16H3/62
CPC classification number: F16H3/62 , F16H3/666 , F16H2200/0078 , F16H2200/2012 , F16H2200/2048
Abstract: A transmission is provided having an input member, an output member, at least four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and a brake actuatable in combinations of four to establish a plurality of forward gear ratios and at least one reverse gear ratio.
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Patent Agency Ranking
公开(公告)号：US08961356B2
公开(公告)日：2015-02-24
申请号：US13921906
申请日：2013-06-19
Applicant: GM Global Technology Operations LLC
Inventor： Casie M. Bockenstette , Carlos E. Marin , Paul G. Otanez , Craig S. Ross
IPC: F16H3/62
CPC classification number: F16H3/66 , F16H2200/0069 , F16H2200/2012 , F16H2200/2046
Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes actuatable in combinations of four to establish a plurality of forward gear ratios and one reverse gear ratio. The transmission also includes a transmission auto start/stop enabler which includes a latch mechanism. The latch mechanism readies at least one of the plurality of torque transmitting devices during an engine auto stop/start event or in preparation for a stop of the motor vehicle.
Abstract translation: 提供一种变速器，其具有输入构件，输出构件，四个行星齿轮组，多个联接构件和多个扭矩传递装置。 每个行星齿轮组包括第一，第二和第三构件。 扭矩传递装置包括离合器和制动器，可组合起动四个，以建立多个前进档比和一个倒档传动比。 变速器还包括一个包括闩锁机构的变速器自动启/停启动器。 在发动机自动停止/启动事件期间，或者准备停止机动车辆时，闩锁机构准备好多个扭矩传递装置中的至少一个。
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公开(公告)号：US08771121B2
公开(公告)日：2014-07-08
申请号：US13918117
申请日：2013-06-14
Applicant: GM Global Technology Operations LLC
Inventor： Paul G. Otanez , Craig S. Ross
IPC: F16H31/00
CPC classification number: F16D25/14 , F16D48/0206 , F16D2048/0209 , F16D2048/0233 , Y10T137/8593
Abstract: An assembly includes a valve body having an inlet in selective communication with an outlet and having an unlatch port, a latching piston disposed within the valve body, a balance spring disposed between the latching piston and the valve body, and a valve piston disposed within the valve body. The inlet communicates with the outlet when the valve piston is in a first position and the inlet does not communicate with the outlet when the valve piston is in a second position. A diaphragm spring is disposed between the latching piston and the valve piston. A holding spring is disposed between the valve piston and the valve body. An unlatching mechanism is in communication with the unlatch port of the valve body.
Abstract translation: 一种组件包括：阀体，其具有与出口选择性连通的入口，并具有解锁口，设置在阀体内的闭锁活塞，设置在闭锁活塞和阀体之间的平衡弹簧，以及设置在阀体内的阀活塞 阀体。 当阀活塞处于第一位置时，入口与出口连通，并且当阀活塞处于第二位置时入口不与出口连通。 隔膜弹簧设置在闩锁活塞和阀活塞之间。 保持弹簧设置在阀活塞和阀体之间。 解锁机构与阀体的解锁口连通。
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公开(公告)号：US20130296093A1
公开(公告)日：2013-11-07
申请号：US13867495
申请日：2013-04-22
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Craig S. Ross , Paul G. Otanez
CPC classification number: F16H47/04 , F16D25/14 , F16D48/02 , F16D48/066 , F16D2048/0203 , F16D2048/0221 , F16D2048/0233 , F16D2048/0257 , F16H3/62 , F16H3/66 , F16H61/0021 , F16H2061/0034 , F16H2200/003 , F16H2200/201 , F16H2312/14
Abstract: A clutch latching system is provided for latching and draining a torque transmitting mechanism. The latching clutch control system may include a latching valve, a release valve, and an accumulator. The clutch latching system may include a clutch feed channel configured to provide hydraulic fluid from a pressurized source to a torque transmitting device when the torque transmitting device is engaged and the engine is running. A latching valve connects the clutch feed channel to the torque transmitting device. The latching valve is configured to selectively trap pressurized hydraulic fluid within the torque transmitting device. A hydraulic pressure storage circuit configured to selectively provide pressurized hydraulic fluid to the latching valve to unlatch the latching valve. A multiple speed transmission is also provided.
Abstract translation: 提供了用于锁定和排出扭矩传递机构的离合器锁定系统。 闩锁离合器控制系统可以包括闭锁阀，释放阀和蓄能器。 离合器锁定系统可以包括离合器进给通道，其构造成当扭矩传递装置接合并且发动机运行时将液压流体从加压源提供给扭矩传递装置。 闭锁阀将离合器进给通道连接到扭矩传递装置。 闭锁阀构造成选择性地将加压的液压流体捕获在扭矩传递装置内。 一种液压存储回路，其构造成选择性地向所述闭锁阀提供加压液压流体以解锁所述闭锁阀。 还提供了多速传动。
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公开(公告)号：US10541578B2
公开(公告)日：2020-01-21
申请号：US15860234
申请日：2018-01-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Shawn H. Swales , Khwaja M. Rahman , Goro Tamai , Craig S. Ross
Abstract: A permanent magnet electric machine (PM machine) for a vehicle or other system includes a rotor assembly, fixed permanent magnets, a stator, an actuator, and one or more repositionable/moveable flux-shunting elements. The flux-shunting element is repositioned to control flux at specific operating points of the PM machine. The rotor assembly has a rotor coaxially surrounding and coupled to a rotor shaft. The permanent magnets are mounted to or in the rotor, and the moveable flux-shunting element is positioned between the rotor shaft and a respective one of the permanent magnets. Inboard and outboard ends of each respective permanent magnet may be oriented toward the rotor shaft and stator, respectively. The actuator selectively positions the moveable flux-shunting element at one or more operating points of the PM machine to vary reluctance in a magnetic circuit formed by the stator and rotor assembly.
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公开(公告)号：US20180186229A1
公开(公告)日：2018-07-05
申请号：US15398745
申请日：2017-01-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Shawn H. Swales , Craig S. Ross
CPC classification number: B60K6/54 , B60K6/365 , B60K6/445 , B60Y2200/92 , B60Y2400/73 , F16H3/091 , F16H3/728 , F16H37/0826 , F16H37/0833 , Y10S903/91 , Y10S903/917
Abstract: A transmission for a hybrid powertrain includes a first input, a second input, a third input, and an output. A sun gear is attached to and rotatable with the first input. A carrier is attached to and rotatable with the third input. The carrier rotatably supports a plurality of pinions. Each of the pinions includes a first pinion gear and a second pinion gear. Each second pinion gear of the pinions is disposed in meshing engagement with the sun gear. A first ring gear is disposed in meshing engagement with each first pinion gear of the pinions. The first ring gear is disposed in torque communication with the second input. A second ring gear is disposed in meshing engagement with each second pinion gear of the pinions. The second ring gear is disposed in torque communication with the output.
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