公开(公告)号：US09086141B2

公开(公告)日：2015-07-21

申请号：US13664459

申请日：2012-10-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Vijay A. Neelakantan ,  John E. Marano ,  Randall B. Dlugoss

IPC: B60W10/06 ,  B60W10/02 ,  F16H61/04 ,  F16H59/48 ,  F16H61/684

CPC classification number: F16H61/0437 ,  F16H59/48 ,  F16H61/684 ,  F16H2061/044

Abstract: A vehicle includes an engine and transmission having gear sets, an input member that is continuously connected to the engine and a gear set, a binary clutch assembly, a speed sensor, and a controller. The binary clutch assembly includes a freewheeling element holding torque in one rotational direction, and also a selectable one-way clutch (SOWC) portion holding torque in two rotational directions when applied. The controller executes a method to transmit a first binary clutch command to the binary clutch assembly and thus apply the SOWC portion at vehicle launch, and calculates, via the processor, an acceleration value of the vehicle using the measured speed. The controller also selects a shift apply point of the binary clutch assembly as a function of the calculated acceleration value, and transmits a second binary clutch command to the binary clutch assembly to release the SOWC portion at the selected shift apply point.

Abstract translation: 车辆包括具有齿轮组的发动机和变速器，连续地连接到发动机的输入构件和齿轮组，二元离合器组件，速度传感器和控制器。 二进制离合器组件包括在一个旋转方向上保持转矩的续流元件，以及当施加时在两个旋转方向上保持转矩的可选择单向离合器（SOWC）部分。 控制器执行将第一二进制离合器命令发送到二进制离合器组件的方法，从而在车辆启动时施加SOWC部分，并且经由处理器使用所测量的速度来计算车辆的加速度值。 控制器还根据计算的加速度值选择二进制离合器组件的换档应用点，并将第二二进制离合器命令发送到二元离合器组件，以在所选择的换档应用点释放SOWC部分。

公开(公告)号：US08983745B2

公开(公告)日：2015-03-17

申请号：US13794915

申请日：2013-03-12

Applicant: GM Global Technology Operations LLC

Inventor： Vijay A. Neelakantan ,  Nathaniel E. Wilke

IPC: F16D48/06

CPC classification number: F16D48/06 ,  F16D2500/30406 ,  F16D2500/3165 ,  F16D2500/50287 ,  F16D2500/50661 ,  F16D2500/7044

Abstract: A method of executing a double transition shift in a transmission includes determining via a controller that one of four clutches involved in the shift has a clutch slip direction relative to input member rotation direction in one of the current gear and the commanded gear and an opposite clutch torque direction relative to input member torque direction in the other of the current gear and the commanded gear. The controller then calculates clutch torques for at least some of the offgoing clutches and at least some of the oncoming clutches, and controls torque at the offgoing clutches and the oncoming clutches during the shift according to the calculated clutch torques to ensure that the clutch with the opposite slip and torque directions does not provide reaction torque during the shift unless clutch slip across said one of the four clutches is zero or in the clutch torque direction.

Abstract translation: 在变速器中执行双转变的方法包括：通过控制器确定在当前齿轮和指令齿轮中的一个中相对于变速中的四个离合器中的一个相对于输入构件旋转方向具有离合器滑动方向，以及相反的离合器 在当前齿轮和指令齿轮中的另一个中相对于输入构件扭矩方向的转矩方向。 控制器然后根据计算出的离合器转矩来计算至少一些离合器和至少一些迎面而来的离合器的离合器扭矩，并根据所计算的离合器转矩控制离合器和迎面而来的离合器的转矩，以确保离合器与 相反的滑移和扭矩方向在换档期间不提供反作用力矩，除非在四个离合器中的所述一个离合器上的离合器滑动为零或在离合器扭矩方向上。

公开(公告)号：US20140121914A1

公开(公告)日：2014-05-01

申请号：US13664459

申请日：2012-10-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Vijay A. Neelakantan ,  John E. Marano ,  Randall B. Dlugoss

IPC: B60W10/02

CPC classification number: F16H61/0437 ,  F16H59/48 ,  F16H61/684 ,  F16H2061/044

Abstract: A vehicle includes an engine and transmission having gear sets, an input member that is continuously connected to the engine and a gear set, a binary clutch assembly, a speed sensor, and a controller. The binary clutch assembly includes a freewheeling element holding torque in one rotational direction, and also a selectable one-way clutch (SOWC) portion holding torque in two rotational directions when applied. The controller executes a method to transmit a first binary clutch command to the binary clutch assembly and thus apply the SOWC portion at vehicle launch, and calculates, via the processor, an acceleration value of the vehicle using the measured speed. The controller also selects a shift apply point of the binary clutch assembly as a function of the calculated acceleration value, and transmits a second binary clutch command to the binary clutch assembly to release the SOWC portion at the selected shift apply point.

Abstract translation: 车辆包括具有齿轮组的发动机和变速器，连续地连接到发动机的输入构件和齿轮组，二元离合器组件，速度传感器和控制器。 二进制离合器组件包括在一个旋转方向上保持转矩的续流元件，以及当施加时在两个旋转方向上保持转矩的可选择单向离合器（SOWC）部分。 控制器执行将第一二进制离合器命令发送到二进制离合器组件的方法，从而在车辆启动时施加SOWC部分，并且经由处理器使用所测量的速度来计算车辆的加速度值。 控制器还根据计算的加速度值选择二进制离合器组件的换档应用点，并将第二二进制离合器命令发送到二元离合器组件，以在所选择的换档应用点释放SOWC部分。

公开(公告)号：US20190145295A1

公开(公告)日：2019-05-16

申请号：US15814881

申请日：2017-11-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Robert Parrish ,  Vijay A. Neelakantan ,  Michael A. Fisher ,  David J. Varda

IPC: F01M11/08 ,  F01M1/02 ,  F01M11/00

Abstract: A fluid management system, or flow control system, for an automotive propulsion system is provided. The system includes a housing defining a sump configured to collect a volume of liquid and gaseous fluid and a pump configured to pump fluid from the sump. The pump defines a pump inlet and a pump outlet. A conduit is in fluid communication with the pump outlet. A passive valve is disposed within the conduit, the conduit defining a conduit outlet downstream of the passive valve, and the conduit further defining an orifice between the pump and the passive valve. The passive valve allows hydraulic fluid to flow past the valve, while substantially preventing air from flowing past the passive valve. The air is instead bled out through the orifice, along with some of the hydraulic fluid.

公开(公告)号：US20180100581A1

公开(公告)日：2018-04-12

申请号：US15288399

申请日：2016-10-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Vijay A. Neelakantan ,  Christopher G. Benson

IPC: F16H63/34

CPC classification number: F16H63/3466 ,  F16H63/3433 ,  F16H63/3441 ,  F16H63/3475 ,  F16H63/3491

Abstract: A transmission for a vehicle includes an electro-mechanical park actuator mechanism that provides motive force to an actuator rod of a park actuator, a default to park mechanism that is internal to the transmission housing, and an electromechanical park inhibit mechanism that is internal to the transmission housing.

公开(公告)号：US20150151733A1

公开(公告)日：2015-06-04

申请号：US14094108

申请日：2013-12-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Randall B. Dlugoss ,  Vijay A. Neelakantan

IPC: B60W10/11 ,  B60W10/02

CPC classification number: B60W10/11 ,  B60W10/02 ,  F16H61/0437 ,  F16H61/16 ,  F16H61/686 ,  F16H2059/465 ,  F16H2061/044 ,  F16H2200/2094

Abstract: A vehicle includes an engine and transmission assembly, the latter having a stationary member, a plurality of gear sets, an input member, a friction clutch, a binary clutch assembly, and a transmission control module (TCM). The binary clutch assembly includes a freewheeling element and a binary device such as a selectable one way clutch or dog clutch. The TCM selectively delays a release of the binary clutch assembly via a binary clutch indicator method by detecting a requested shift of the transmission requiring an engagement of the friction clutch, and commanding the release of the binary clutch assembly. The TCM determines an amount of slip across the binary clutch assembly and executes the requested shift of the transmission only when the determined amount of slip exceeds a calibrated slip threshold. Slip may be measured or calculated.

Abstract translation: 车辆包括发动机和变速器组件，后者具有固定构件，多个齿轮组，输入构件，摩擦离合器，二元离合器组件和变速器控制模块（TCM）。 二进制离合器组件包括续流元件和二进制装置，例如可选择的单向离合器或爪式离合器。 TCM通过检测要求的摩擦离合器的接合的变速器的要求的换档并且指令二次离合器组件的释放来选择性地延迟二进制离合器组件的释放。 TCM确定跨过二元离合器组件的滑移量，并且仅当所确定的滑移量超过校准的滑移阈值时才执行所要求的变速器换档。 滑移可以被测量或计算。

公开(公告)号：US20140277977A1

公开(公告)日：2014-09-18

申请号：US13794915

申请日：2013-03-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Vijay A. Neelakantan ,  Nathaniel E. Wilke

IPC: F16D48/06

CPC classification number: F16D48/06 ,  F16D2500/30406 ,  F16D2500/3165 ,  F16D2500/50287 ,  F16D2500/50661 ,  F16D2500/7044

Abstract: A method of executing a double transition shift in a transmission includes determining via a controller that one of four clutches involved in the shift has a clutch slip direction relative to input member rotation direction in one of the current gear and the commanded gear and an opposite clutch torque direction relative to input member torque direction in the other of the current gear and the commanded gear. The controller then calculates clutch torques for at least some of the offgoing clutches and at least some of the oncoming clutches, and controls torque at the offgoing clutches and the oncoming clutches during the shift according to the calculated clutch torques to ensure that the clutch with the opposite slip and torque directions does not provide reaction torque during the shift unless clutch slip across said one of the four clutches is zero or in the clutch torque direction.

Abstract translation: 在变速器中执行双转变的方法包括：通过控制器确定在当前齿轮和指令齿轮中的一个中相对于变速中的四个离合器中的一个相对于输入构件旋转方向具有离合器滑动方向，以及相反的离合器 在当前齿轮和指令齿轮中的另一个中相对于输入构件扭矩方向的转矩方向。 控制器然后根据计算出的离合器转矩来计算至少一些离合器和至少一些迎面而来的离合器的离合器扭矩，并根据所计算的离合器转矩控制离合器和迎面而来的离合器的转矩，以确保离合器与 相反的滑移和扭矩方向在换档期间不提供反作用力矩，除非在四个离合器中的所述一个离合器上的离合器滑动为零或在离合器扭矩方向上。

公开(公告)号：US20130324355A1

公开(公告)日：2013-12-05

申请号：US13709801

申请日：2012-12-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe Xie ,  Vijay A. Neelakantan

IPC: F16H61/664

CPC classification number: F16H61/6649 ,  F16H61/664 ,  F16H61/6646 ,  F16H61/6648

Abstract: A speed ratio containment process limits the speed ratio of a variator for a CVT for a motor vehicle when rolling backward by commanding a speed ratio that is higher than the actual speed ratio in an overdrive direction. Accordingly, the actual speed ratio moves to a lowest limit, which provides maximum torque when a driver of the motor vehicle steps on the accelerator pedal to resume forward motion of the motor vehicle.

Abstract translation: 速比保持过程通过指定在过驱动方向上的实际速比比高的速比来限制机动车辆的CVT的变速器的变速比。 因此，实际变速比移动到最低限度，当驾驶员踏上加速器踏板以恢复机动车辆的向前运动时，其提供最大转矩。

公开(公告)号：US20130228041A1

公开(公告)日：2013-09-05

申请号：US13862892

申请日：2013-04-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Paul G. Otanez ,  Shushan Bai ,  Vijay A. Neelakantan

IPC: F16F15/14

CPC classification number: F16F15/1407 ,  F16F15/1414 ,  F16F15/1421 ,  F16F15/145 ,  Y10T74/2128 ,  Y10T464/50

Abstract: A system for absorbing vibration in a rotary member having a predetermined rotary speed of the present invention has a selectively moveable mass and a positioning mechanism. The mass is in communication with the rotary member having a predetermined position. The positioning mechanism exerts a force on the mass at least when the rotary member operates below the predetermined rotary speed. The force exerted by the positioning mechanism orients the mass at the predetermined position when the rotary member operates below the predetermined rotary speed.

Abstract translation: 本发明的具有规定的转速的旋转部件的振动吸收系统具有选择性地移动的质量和定位机构。 该质量体与具有预定位置的旋转构件连通。 至少当旋转构件在预定转速以下运转时，定位机构对质量施加力。 当旋转构件在预定旋转速度下运行时，由定位机构施加的力将质量定位在预定位置。

公开(公告)号：US11242019B2

公开(公告)日：2022-02-08

申请号：US16156597

申请日：2018-10-10

Applicant: GM Global Technology Operations LLC

Inventor： Robert Parrish ,  Nathaniel J. Diroff ,  Vijay A. Neelakantan

IPC: B60R17/02 ,  F16N7/38 ,  F16N13/00 ,  H02K9/19 ,  F16N39/02 ,  F16N39/06 ,  F16N23/00

Abstract: A cooling and lubrication system for a motor vehicle drive unit includes a drive unit sump, a first mechanically-driven pump, a second mechanically-driven pump, and an oil/air separator reservoir, among other possible components. The drive unit sump holds drive unit fluid. The first mechanically-driven pump fluidly communicates with the drive unit sump, and the second mechanically-driven pump fluidly communicates with the drive unit sump. The oil/air separator reservoir resides downstream of the first mechanically-driven pump and resides downstream of the second mechanically-driven pump.