公开(公告)号：US20200124152A1

公开(公告)日：2020-04-23

申请号：US16165346

申请日：2018-10-19

Applicant: GM Global Technology Operations LLC

Inventor： Chunhao J. LEE ,  Farzad Samie ,  Derek F. Lahr ,  Norman K. Bucknor ,  Dongxu Li

IPC: F16H45/02 ,  F16H41/24 ,  F16D41/12 ,  F16D41/04 ,  F16F15/123

Abstract: A powertrain system includes a flex plate, a transmission input shaft, a torque coupling, a one-way clutch, and a damper assembly. The flex plate is configured to be connected to a crankshaft of an engine. The torque coupling connects the transmission input shaft to the flex plate while allowing slip between the transmission input shaft and the flex plate. The one-way clutch is configured to couple the flex plate to the torque coupling. The damper assembly couples the flex plate to the one-way clutch and is configured to inhibit vibration transmission from the flex plate to the one-way clutch.

公开(公告)号：US10514096B2

公开(公告)日：2019-12-24

申请号：US15727141

申请日：2017-10-06

Applicant: GM Global Technology Operations LLC

Inventor： Farzad Samie ,  Chunhao J. Lee ,  Derek F. Lahr ,  Dmitriy Bruder

IPC: F16H61/662 ,  F16H9/12

Abstract: The continuously variable transmission (CVT) assembly includes a CVT including a drive pulley, a driven pulley, and an endless rotatable device coupled between the drive pulley and the driven pulley. The CVT assembly also includes an actuator coupled to the drive pulley. The CVT assembly also includes an angle sensor coupled to the endless rotatable device such that the angle sensor is configured to measure an angular position of the endless rotatable device. The CVT assembly also includes a controller in communication with the actuator and the angle sensor. The controller is programmed to: (a) determine a speed ratio of the CVT based on the angular position of the endless rotatable device; and (b) control the actuator to adjust the clamping force exerted on the drive pulley in response to determining the speed ratio of the CVT.

公开(公告)号：US10473195B2

公开(公告)日：2019-11-12

申请号：US15615387

申请日：2017-06-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Farzad Samie ,  Jian Yao ,  Chi-Kuan Kao

IPC: F16H9/12 ,  F16H9/16 ,  F16H9/24

Abstract: A continuously-variable transmission (CVT) assembly is employed for transmitting a torque from an external power-source. The CVT includes a variable-diameter input pulley and a variable-diameter output pulley, each having a respective range of adjustment. The CVT also includes a continuous torque-transmitting element extending between the variable-diameter input pulley and the variable-diameter output pulley, and thereby operatively connecting the input pulley to the output pulley. The CVT additionally includes a first elastic element having a first zero stiffness over the range of adjustment of the variable-diameter input pulley and configured to apply a first constant spring clamping force via the input pulley to the continuous torque-transmitting element. Furthermore, the CVT includes a second elastic element having a second zero stiffness over the range of adjustment of the variable-diameter input pulley and configured to apply a second constant spring clamping force via the output pulley to the continuous torque-transmitting element.

公开(公告)号：US20190257384A1

公开(公告)日：2019-08-22

申请号：US15899423

申请日：2018-02-20

Applicant: GM Global Technology Operations LLC

Inventor： Dongxu Li ,  Farzad Samie ,  Derek F. Lahr

IPC: F16F15/14 ,  F16D7/02 ,  F16F15/30

Abstract: An isolator assembly includes a clutch configured to operate in a full locked condition. The isolator assembly also includes a first damper and a second damper configured to reduce oscillation when the clutch is in the full locked condition. The first and second dampers each include at least one plate and at least one spring. The isolator assembly further includes a centrifugal pendulum absorber (CPA) coupled to one of the first and second dampers. The CPA is configured to reduce oscillation when the clutch is in the full locked condition. A vehicle includes an engine and a transmission. The engine includes an output shaft and the transmission includes an input member. The vehicle includes the isolator assembly operable between the output shaft and the input member.

公开(公告)号：US10358123B2

公开(公告)日：2019-07-23

申请号：US15829043

申请日：2017-12-01

Applicant: GM Global Technology Operations LLC

Inventor： Chunhao J. Lee ,  Neeraj S. Shidore ,  Dongxu Li ,  Norman K. Bucknor ,  Farzad Samie ,  Derek F. Lahr

IPC: B60W10/02 ,  B60W20/40 ,  B60L15/20

Abstract: Presented are engine-disconnect clutches with attendant control logic, methods for making/operating such disconnect clutches, and hybrid electric vehicles (HEV) equipped with an engine that is coupled to/decoupled from a transmission and electric motor via a disconnect clutch. A representative method for controlling an HEV powertrain includes receiving an HEV powertrain operation command, then determining a clutch mode of a multi-mode clutch device to execute the HEV powertrain operation. This multi-mode clutch device is operable in: a lock-lock mode, in which the clutch device transmits torque to and from the engine; a free-free mode, in which the clutch device disconnects the engine's output member from the transmission's input member, preventing torque transmission to and from the engine; a lock-free mode, in which the clutch device transmits torque from but not to the engine; and, a free-lock mode, in which the clutch device transmits torque to but not from the engine.

公开(公告)号：US20190176607A1

公开(公告)日：2019-06-13

申请号：US15840411

申请日：2017-12-13

Applicant: GM Global Technology Operations LLC

Inventor： Derek F. Lahr ,  Farzad Samie ,  Chunhao J. Lee ,  Dongxu Li ,  Norman K. Bucknor

IPC: B60K6/26 ,  B60K6/38 ,  B60K6/485 ,  B60K6/405 ,  B60K17/02 ,  F04B17/05 ,  F16H45/02

Abstract: A powertrain includes an engine and a transmission. A vehicle includes a body structure and the powertrain supported by the body structure. The powertrain is configured to propel the body structure. The engine includes an output shaft, and the transmission includes an input member. The powertrain further includes a torque converter operable between the output shaft and the input member. The torque converter includes a pump and a turbine. The powertrain also includes a motor-generator operable as a motor and a generator. The input member of the transmission is connected to the turbine such that torque from the torque converter is transferrable to the input member. The input member of the transmission is coupled to the motor-generator such that torque is transferred between the input member and the motor-generator.

公开(公告)号：US10166975B2

公开(公告)日：2019-01-01

申请号：US15387697

申请日：2016-12-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Derek F. Lahr ,  Chunhao J. Lee ,  Farzad Samie ,  Dongxu Li ,  Dmitriy Bruder

IPC: B60W20/40 ,  B60K6/387 ,  F16D47/04 ,  F16H41/24 ,  F16H45/02 ,  F16H61/14 ,  F16D21/00

Abstract: A transmission includes a housing, and a transmission input member. A torque converter includes a pump and a turbine. The turbine of the torque converter is connected to the transmission input member. A lock-up clutch selectively connects the pump and the turbine. A cover is connected to and rotatable with the pump. The cover at least partially defines an interior of the torque converter. A torque converter input member passes through the cover. A one way clutch interconnects the torque converter input member and the cover. An engine brake friction clutch is disposed within the interior of the torque converter. The engine brake friction clutch selectively interconnects the torque converter input member and the cover in torque communication to transfer a braking torque therebetween.

公开(公告)号：US10151373B1

公开(公告)日：2018-12-11

申请号：US15618533

申请日：2017-06-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dongxu Li ,  Farzad Samie ,  Derek F. Lahr

IPC: F16F15/131 ,  F16F15/14 ,  F16H45/02

CPC classification number: F16F15/13157 ,  F16F15/1478 ,  F16H45/02 ,  F16H2045/0226 ,  F16H2045/0263 ,  F16H2045/0268

Abstract: A powertrain includes an engine having a crankshaft, and a transmission having an input. A vibration absorption assembly includes a mechanical connection system providing a first connection node, a second connection node, and a third connection node. The crankshaft is connected to a first one of the connection nodes. The input of the transmission is connected to a second one of the connection nodes. A centrifugal pendulum absorber is connected to a third one of the connection nodes. One of the connection nodes is a mechanically advantaged node. The centrifugal pendulum absorber is connected to the mechanically advantaged node.

公开(公告)号：US20180347673A1

公开(公告)日：2018-12-06

申请号：US15615387

申请日：2017-06-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Farzad Samie ,  Jian Yao ,  Chi-Kuan Kao

IPC: F16H9/12 ,  F16H9/16 ,  F16G5/18

CPC classification number: F16H9/125 ,  F16H9/16 ,  F16H2009/163 ,  F16H2009/245

Abstract: A continuously-variable transmission (CVT) assembly is employed for transmitting a torque from an external power-source. The CVT includes a variable-diameter input pulley and a variable-diameter output pulley, each having a respective range of adjustment. The CVT also includes a continuous torque-transmitting element extending between the variable-diameter input pulley and the variable-diameter output pulley, and thereby operatively connecting the input pulley to the output pulley. The CVT additionally includes a first elastic element having a first zero stiffness over the range of adjustment of the variable-diameter input pulley and configured to apply a first constant spring clamping force via the input pulley to the continuous torque-transmitting element. Furthermore, the CVT includes a second elastic element having a second zero stiffness over the range of adjustment of the variable-diameter input pulley and configured to apply a second constant spring clamping force via the output pulley to the continuous torque-transmitting element.

公开(公告)号：US10047822B1

公开(公告)日：2018-08-14

申请号：US15615092

申请日：2017-06-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Derek F Lahr ,  Farzad Samie ,  Dongxu Li

IPC: F16F15/14 ,  F16F15/131 ,  F16F1/10 ,  F16F1/04 ,  F16F1/366 ,  F16F13/02 ,  F16F13/00 ,  F16F15/123 ,  F16F15/10 ,  F16F15/12 ,  F16F15/134 ,  F16F15/121 ,  F16F15/133 ,  F16H45/02

Abstract: A torque transfer mechanism includes an input member to receive from a propulsion source, an input torque about an axis of rotation and an output member coupled to the input member to transfer the input torque to a downstream driveline component. The torque transfer mechanism also includes at least one clockspring to restrict relative rotation between the input member and the output member. The torque transfer further includes a mass plate coupled to the output member and configured to rotate about the axis of rotation. The torque transfer mechanism further includes a plurality of pendulum masses movably coupled to the mass plate wherein the clockspring is arranged to attenuate a first range of input torque vibration and a the plurality of pendulum masses are arranged to attenuate a second range of input torque vibration.