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公开(公告)号：US10125866B2
公开(公告)日：2018-11-13
申请号：US15074280
申请日：2016-03-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chengwu Duan , Farzad Samie , Chunhao J. Lee , Jian Yao
IPC: F16H37/02 , F16H61/70 , F16H61/664
Abstract: A transmission variator includes a first pulley rotatably attached to an intermediate member of a geartrain, and a second pulley rotatably attached to an output member that is rotatably coupled to the driveline. The geartrain includes an input member, a planetary gear set, a first clutch, a second clutch and an intermediate member. The second clutch is a low drag clutch. The input member rotatably couples to the prime mover. A controller includes an instruction set that is executable to activate only the first clutch in response to a request to operate the driveline in a forward direction, and activate only the second clutch in response to a request to operate the driveline in a reverse direction.
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公开(公告)号：US20180080530A1
公开(公告)日：2018-03-22
申请号：US15526884
申请日：2014-11-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chengwu Duan , Ying Huang
CPC classification number: F16H9/24 , F16G5/18 , F16G13/04 , F16G13/08 , F16H9/18 , F16H55/30 , F16H55/56
Abstract: The CVT includes a first pulley and a second pulley. Each of the first and second pulleys includes a first sheave, a second sheave, and a pulley axle operatively coupled between the first sheave and the second sheave. The first sheave can move relative to the second sheave along the pulley axle. Each of the first and second sheaves includes a sheave body and a plurality of sheave teeth protruding from the sheave body. The CVT further includes an endless rotatable device operatively coupled between the first and second pulleys. The endless rotatable device includes a plurality of pins interconnecting at least two of the links. The endless rotatable device further includes a plurality of device teeth each coupled to the pins.
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公开(公告)号：US20170314676A1
公开(公告)日：2017-11-02
申请号：US15532264
申请日：2014-11-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Ying Huang , Chengwu Duan
CPC classification number: F16H61/66272 , F16G1/28 , F16G5/20 , F16H9/18 , F16H9/24 , F16H55/171 , F16H55/56 , F16H61/66236 , F16H61/66259 , F16H2059/465 , F16H2061/0087 , F16H2061/009
Abstract: A vehicle includes a power plant, continuously variable transmission (CVT), drive wheels, sensors, and controller. The CVT achieves a fixed gear/positive engagement and friction drive modes, and includes an input member that receives input torque from the power plant, an output member, and a variator assembly having drive and driven variator pulleys. The pulleys are connected to each other via an endless rotatable drive element, and to a respective one of the input and output members. Pulley actuators change a CVT speed ratio. The controller calculates a relative slip of the pulleys using measured speeds and displacements from the sensors, reduces the relative slip until the relative slip is below a calibrated speed limit or within a calibrated speed range via actuator control signal to the pulley actuators, and commands the fixed gear/positive engagement mode via positive engagement control signals to the CVT until the relative slip reaches zero.
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公开(公告)号：US20170226940A1
公开(公告)日：2017-08-10
申请号：US15019465
申请日：2016-02-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David Sun , Yongsheng He , Zhimin Liu , Chengwu Duan
CPC classification number: F02D41/0007 , F01L1/08 , F01L1/185 , F01L9/02 , F01L2105/00 , F02B37/04 , F02B37/10 , F02B37/12 , F02B37/14 , F02B39/04 , F02B2037/122 , F02D13/0234 , F02D2041/001 , Y02T10/144 , Y02T10/18
Abstract: An internal combustion engine includes a cylinder block that defines a cylinder and a cylinder head positioned relative to the cylinder block. A reciprocating piston is arranged inside the cylinder for compressing an air and fuel mixture at a geometric compression ratio of at least 10:1. A crankshaft is arranged in the cylinder block and rotated by the piston. An intake valve is operatively connected to the cylinder head and controls delivery of air to the cylinder for combustion therein. A mechanism provides late intake valve closing via constant peak lift of the intake valve over at least 5 degrees of crankshaft rotation. A multi-stage boosting system, having a turbocharger, a supercharger, and a continuously variable transmission for varying the supercharger's rotating speed, is regulated by a controller to selectively pressurize air being received from the ambient for delivery to the cylinder.
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公开(公告)号：US20250112512A1
公开(公告)日：2025-04-03
申请号：US18506185
申请日：2023-11-10
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Vincent Fedida , Alan G. Holmes , Chengwu Duan , Jian Yao
IPC: H02K1/2798 , H02K1/24 , H02K16/02
Abstract: A rotor for mounting on a rotational axis in an axial flux electric motor includes a ferromagnetic rotor core. The rotor also includes a plurality of alternating south and north pole permanent magnets (PMs) arranged on the ferromagnetic rotor core symmetrically around the rotational axis and facing the stator. The ferromagnetic rotor core includes a plurality of core saliencies extending to the rotor exterior surface. Each of the core saliencies is arranged between one south pole PM and one north pole PM. The plurality of core saliencies is phase-angle shifted relative to the plurality of alternating south and north pole PMs to thereby alter magnetic reluctance of the electric motor. An axial flux electric motor employing the above-described rotor is also contemplated.
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Patent Agency Ranking
公开(公告)号：US20250096357A1
公开(公告)日：2025-03-20
申请号：US18499726
申请日：2023-11-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lu Huang , Hui-ping Wang , Chengwu Duan , Derek F. Lahr , Zhenwen Hu , Jian Yao , Blair E. Carlson , Xiaoling Chen
IPC: H01M10/6557 , B60L50/64 , H01M10/613 , H01M10/625 , H01M10/6555 , H01M50/209 , H01M50/249 , H01M50/581
Abstract: The present disclosure describes a multi-function, integrated Super Beam assembly structure with integrated structural, cooling, and transverse elastic compliance functions; and Thermal Management Propagation (TMP) protection. The Super Beam assembly includes a pair of parallel face plates, coolant channel cover plates, and coolant channels that are defined by the face plate and the one or more coolant channel cover plates. The structural design of the cooling channels, and the corresponding air gaps formed in-between them, allows a transverse elastic compliance of the Super Beam assembly to be tuned to different amounts of elasticity. Top, bottom and/or end structural channels may be included. A pair of TMP suppression channels may be attached to the Super Beam assembly structure with an adhesive “thermal fuse” that preferentially melts and causes the pair of TMP suppression channels to detach from the Super Beam assembly during overheating in a TMP event.
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公开(公告)号：US20250088054A1
公开(公告)日：2025-03-13
申请号：US18609135
申请日：2024-03-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jian Yao , Chengwu Duan , Vincent Fedida , SeungHwan Keum , Alan G. Holmes
Abstract: A cooled axial flux electric motor includes a rotationally-fixed stator defining a rotational axis and having a plurality of conductive stator magnetic poles arranged radially about the axis. The motor also includes a rotor spaced axially from one side from the stator and rotatably mounted coaxially with the rotational axis and defined by inside and outside diameters. The rotor has a first exterior surface facing the stator and a second exterior surface arranged opposite the first exterior surface. A ferromagnetic rotor core defines the rotor second exterior surface. The rotor also includes alternating south and north pole permanent magnets (PMs) arranged on the rotor core symmetrically around the axis and facing the stator. The rotor additionally includes channels extending radially outwardly across the rotor and configured to direct a coolant, via centrifugal force, from the inside diameter toward the outside diameter as the rotor rotates about the axis.
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公开(公告)号：US20250088046A1
公开(公告)日：2025-03-13
申请号：US18490327
申请日：2023-10-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Vincent Fedida , Jian Yao , Chengwu Duan
Abstract: An electrical machine includes a rotationally-fixed stator defining a rotational axis of the electrical machine and having a plurality of stator magnetic poles, the stator magnetic poles disposed about the rotational axis. The electrical machine also has a rotor rotatably mounted coaxially with the rotational axis and axially spaced from the stator, the rotor having a plurality of permanent magnets facing the stator magnetic poles. Each stator magnetic pole includes a plurality of ferromagnetic laminations in a lamination stack that extends from a radially-inward extent to a radially-outward extent relative to the rotational axis, and a ferromagnetic composite pole portion affixed to the radially-outward extent or the radially-inward extent of the lamination stack of the stator magnetic pole.
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公开(公告)号：US12246606B2
公开(公告)日：2025-03-11
申请号：US17550004
申请日：2021-12-14
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lei Hao , Chandra S. Namuduri , Chengwu Duan , Suresh Gopalakrishnan , Neeraj S. Shidore , Venkata Prasad Atluri
Abstract: A power control system for a vehicle includes a charge port and a contactor connected to the charge port and including a first plurality of switches. An energy storage system includes a second plurality of switches and one or more battery packs. A bi-directional DC-DC converter is connected between the energy storage system and a plurality of vehicle loads. A controller is configured to control states of the first and second plurality of switches to configure in a plurality of modes including a range improvement mode, a first charging mode to perform charging at a first voltage level, a second charging mode to perform charging at a second voltage level, a battery preconditioning mode; and an accessory load support mode.
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公开(公告)号：US20240291061A1
公开(公告)日：2024-08-29
申请号：US18302455
申请日：2023-04-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jian Yao , Yue-Yun Wang , Zhenwen Hu , Chengwu Duan , Shuonan Xu
IPC: H01M10/615 , H01M10/625 , H01M10/6555
CPC classification number: H01M10/615 , H01M10/625 , H01M10/6555
Abstract: A mixed chemistry battery including a sensing cell having a first chemistry, a battery cell having a second chemistry that is different than the first chemistry. The mixed chemistry battery also includes a sensor configured to measure a temperature of the mixed chemistry battery and a heating system configured to heat the second battery cell. The mixed chemistry battery further includes a battery monitoring system configured to selectively connect the heating system to at least one of the first battery cell and the second battery cell based upon the temperature of the mixed chemistry battery.
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