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公开(公告)号：US10982757B2
公开(公告)日：2021-04-20
申请号：US16037448
申请日：2018-07-17
Applicant: GM Global Technology Operations LLC
Inventor： Shushan Bai
IPC: F16H61/02 , F16H61/662 , F16H61/00 , F16H9/16
Abstract: A hydraulic control system for a continuously variable transmission (CVT) includes a pressure regulator subsystem, a selection valve in downstream fluid communication with the pressure regulator subsystem, the selection valve configured to control a flow of pressurized oil from the pressure regulator subsystem to a primary pulley circuit and a secondary pulley circuit, the primary pulley circuit in fluid communication with a primary pulley and the secondary pulley circuit in communication with a secondary pulley, and a ratio control pump disposed in fluid communication between the primary pulley circuit and the secondary pulley circuit, wherein rotation of the ratio control pump in a first direction pumps pressurized oil from the secondary pulley circuit to the primary pulley circuit and rotation of the control pump in a second direction pumps pressurized oil from the primary pulley circuit to the secondary pulley circuit to change a ratio of the CVT.
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公开(公告)号：US10473182B2
公开(公告)日：2019-11-12
申请号：US15964271
申请日：2018-04-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dongxu Li , Leonid Basin , Shushan Bai
IPC: F16F15/123 , F16D3/12 , F16H45/02 , F02D41/00
Abstract: A system for absorbing vibration and transmitting torque from a rotating power source to a rotatable load includes a rotatable driving member configured as an input to be driven by the power source to rotate about an axis of rotation. The system has a cam plate with a cam surface. A spring is configured to extend lengthwise in a radial direction relative to the axis of rotation. The spring is configured to be compressed due to the cam surface during relative rotation of the driving member and a driven member when the cam plate is operatively connected to rotate in unison with said one of the driving member and the driven member. The spring therefore has an effective spring rate dependent upon the cam surface, compression of the spring absorbs torsional vibration of the driving member, and the cam plate.
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公开(公告)号：US10119604B2
公开(公告)日：2018-11-06
申请号：US15352014
申请日：2016-11-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dongxu Li , Shushan Bai
Abstract: A torque transfer assembly includes input and output members configured to transfer torque from a prime mover to an automotive transmission. A torque transfer component, such as a torque converter or a dual-mass fly wheel, and a clutch are coupled to the input member. A torsional vibration damper includes a planetary gear set having first, second, and third nodes. First and second spring engagement elements are connected to two of the first, second, and third nodes. One or more springs contacts both of the first and second spring engagement elements. An outgoing member of the torque multiplying device is coupled to the first node of the planetary gear set, a driven element of the clutch is connected to the second node of the planetary gear set, and the output member is coupled to the third node of the planetary gear set.
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公开(公告)号：US20130237329A1
公开(公告)日：2013-09-12
申请号：US13870588
申请日：2013-04-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Shushan Bai , Paul G. Otanez , Vijay A. Neelakantan , Donald L. Dusenberry
CPC classification number: F16F15/145 , F16D3/12 , F16D3/66 , F16F15/123
Abstract: A system for absorbing vibration created by operation of an engine of the present invention includes a first plate driven by an engine shaft and a torque transmitting device for transferring torque from the engine shaft to a transmission input shaft. The system includes a first vibration absorber and a second vibration absorber. The first vibration absorber includes at least one selectively moveable mass. The second vibration absorber includes at least one biasing member and generally opposing ends. The first vibration absorber is configured to absorb vibrations created at a first harmonic of the engine and the second vibration absorber is configured to absorb vibrations created at multiple harmonics of the engine.
Abstract translation: 用于吸收由本发明的发动机操作产生的振动的系统包括由发动机轴驱动的第一板和用于将扭矩从发动机轴传递到变速器输入轴的扭矩传递装置。 该系统包括第一振动吸收器和第二振动吸收器。 第一振动吸收器包括至少一个选择性可移动的质量块。 第二振动吸收器包括至少一个偏置构件和大致相对的端部。 第一减震器构造成吸收在发动机的一次谐波处产生的振动，并且第二减震器构造成吸收在发动机的多次谐波处产生的振动。
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公开(公告)号：US20200025290A1
公开(公告)日：2020-01-23
申请号：US16037448
申请日：2018-07-17
Applicant: GM Global Technology Operations LLC
Inventor： Shushan Bai
IPC: F16H61/02 , F16H61/662
Abstract: A hydraulic control system for a continuously variable transmission (CVT) includes a pressure regulator subsystem, a selection valve in downstream fluid communication with the pressure regulator subsystem, the selection valve configured to control a flow of pressurized oil from the pressure regulator subsystem to a primary pulley circuit and a secondary pulley circuit, the primary pulley circuit in fluid communication with a primary pulley and the secondary pulley circuit in communication with a secondary pulley, and a ratio control pump disposed in fluid communication between the primary pulley circuit and the secondary pulley circuit, wherein rotation of the ratio control pump in a first direction pumps pressurized oil from the secondary pulley circuit to the primary pulley circuit and rotation of the control pump in a second direction pumps pressurized oil from the primary pulley circuit to the secondary pulley circuit to change a ratio of the CVT.
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Patent Agency Ranking
公开(公告)号：US20180245662A1
公开(公告)日：2018-08-30
申请号：US15964271
申请日：2018-04-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dongxu Li , Leonid Basin , Shushan Bai
IPC: F16F15/123 , F16D3/12 , F16H45/02 , F02D41/00
CPC classification number: F16F15/12306 , F02D41/0087 , F16D3/12 , F16F2230/0064 , F16H45/02 , F16H2045/0221 , F16H2045/0294
Abstract: A system for absorbing vibration and transmitting torque from a rotating power source to a rotatable load includes a rotatable driving member configured as an input to be driven by the power source to rotate about an axis of rotation. The system has a cam plate with a cam surface. A spring is configured to extend lengthwise in a radial direction relative to the axis of rotation. The spring is configured to be compressed due to the cam surface during relative rotation of the driving member and a driven member when the cam plate is operatively connected to rotate in unison with said one of the driving member and the driven member. The spring therefore has an effective spring rate dependent upon the cam surface, compression of the spring absorbs torsional vibration of the driving member, and the cam plate.
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公开(公告)号：US20180135736A1
公开(公告)日：2018-05-17
申请号：US15352014
申请日：2016-11-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dongxu Li , Shushan Bai
CPC classification number: F16H45/02 , B60K17/00 , F16H2045/0221 , F16H2045/0268
Abstract: A torque transfer assembly includes input and output members configured to transfer torque from a prime mover to an automotive transmission. A torque transfer component, such as a torque converter or a dual-mass fly wheel, and a clutch are coupled to the input member. A torsional vibration damper includes a planetary gear set having first, second, and third nodes. First and second spring engagement elements are connected to two of the first, second, and third nodes. One or more springs contacts both of the first and second spring engagement elements. An outgoing member of the torque multiplying device is coupled to the first node of the planetary gear set, a driven element of the clutch is connected to the second node of the planetary gear set, and the output member is coupled to the third node of the planetary gear set.
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公开(公告)号：US20170130834A1
公开(公告)日：2017-05-11
申请号：US14935574
申请日：2015-11-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Zhen J. Zhang , Paul G. Otanez , Shushan Bai
IPC: F16H61/662 , F16H9/18
CPC classification number: F16H61/66272 , F16H9/18 , F16H59/44
Abstract: A powertrain system including an internal combustion engine rotatably coupled to a variator of a continuously variable transmission (CVT) is described. A method for controlling the CVT includes determining an actual speed ratio, a desired speed ratio and a commanded speed ratio. A total speed ratio change rate is determined based upon the actual speed ratio, the desired speed ratio and the commanded speed ratio, and a commanded speed ratio trajectory is determined based upon the desired speed ratio and the commanded speed ratio. A ratio change coefficient and a force ratio factor are determined based upon the commanded speed ratio trajectory, and a shift force is determined based upon the total speed ratio change rate and the ratio change coefficient. A primary pulley force and a secondary pulley force for the CVT are controlled based upon the shift force and the force ratio factor.
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公开(公告)号：US11180152B1
公开(公告)日：2021-11-23
申请号：US17065953
申请日：2020-10-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Shushan Bai , Nathan M. Picot , Brandon M. Fell , Gregory M. Wilson , Ning Jin
Abstract: A fuel management system includes a memory and a control module. The memory stores fuel rate maps for multiple firing fractions, where: each of the firing fractions corresponds to a respective firing pattern of an engine; at least some of the firing patterns include deactivating one or more cylinders. The control module: for each of the firing fractions, determines a fuel efficiency value for each of multiple transmission gear ratios, where fuel efficiency values are provided for transmission ratio and firing fraction pairs; applies drive ability constraints to provide resultant transmission ratio and firing fraction pairs; subsequent to applying the drive ability constraints and based on the fuel efficiency values, selects one of the resultant transmission ratio and firing fraction pairs; and concurrently operates a transmission and the engine according to the selected one of the transmission ratio and firing fraction pairs.
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公开(公告)号：US09765884B2
公开(公告)日：2017-09-19
申请号：US14935574
申请日：2015-11-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Zhen J. Zhang , Paul G. Otanez , Shushan Bai
IPC: F16H61/662 , F16H9/18
CPC classification number: F16H61/66272 , F16H9/18 , F16H59/44
Abstract: A powertrain system including an internal combustion engine rotatably coupled to a variator of a continuously variable transmission (CVT) is described. A method for controlling the CVT includes determining an actual speed ratio, a desired speed ratio and a commanded speed ratio. A total speed ratio change rate is determined based upon the actual speed ratio, the desired speed ratio and the commanded speed ratio, and a commanded speed ratio trajectory is determined based upon the desired speed ratio and the commanded speed ratio. A ratio change coefficient and a force ratio factor are determined based upon the commanded speed ratio trajectory, and a shift force is determined based upon the total speed ratio change rate and the ratio change coefficient. A primary pulley force and a secondary pulley force for the CVT are controlled based upon the shift force and the force ratio factor.
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