公开(公告)号：US20190107187A1

公开(公告)日：2019-04-11

申请号：US16214888

申请日：2018-12-10

Applicant: GM Global Technology Operations LLC

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

IPC: F16H45/02 ,  F16D41/16 ,  F16D41/08 ,  F16D41/12

Abstract: Disclosed are damper assemblies for engine disconnect devices, methods for making such damper assemblies, and motor vehicles with a disconnect device for coupling/decoupling an engine with a torque converter (TC). A disconnect clutch for selectively connecting an engine with a TC includes a pocket plate that movably mounts to the TC. The pocket plate includes pockets movably seating therein engaging elements that engage input structure of the TC and thereby lock the pocket plate to the TC. A selector plate moves between engaged and disengaged positions such that the engaging elements shift into and out of engagement with the TC input structure, respectively. A flex plate is attached to the engine's output shaft for common rotation therewith. A damper plate is attached to the pocket plate for common rotation therewith. Spring elements mate the damper and flex plates such that the damper plate is movably attached to the flex plate.

公开(公告)号：US20190048970A1

公开(公告)日：2019-02-14

申请号：US15675134

申请日：2017-08-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: F16F15/14 ,  F16D3/12

Abstract: An isolator assembly includes a clutch configured to operate in a full locked condition and a slip condition. Additionally, the isolator assembly includes a damper and a centrifugal pendulum absorber (CPA). The damper is configured to reduce oscillation when the clutch is in one of the full locked condition and the slip condition. The damper includes a blade that is biasable. The CPA is coupled to the damper and configured to reduce oscillation when the clutch is in one of the full locked condition and the slip 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：US20180355923A1

公开(公告)日：2018-12-13

申请号：US15619776

申请日：2017-06-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: F16D15/00 ,  B62D63/04 ,  B60K17/02 ,  F16D19/00

CPC classification number: F16D15/00 ,  B60K6/54 ,  B60K17/02 ,  F16D19/00

Abstract: Disclosed are latching mechanisms for engine disconnect devices, methods for making and for using such latching mechanisms, and motor vehicles with a disconnect device for coupling/decoupling an engine with a torque converter (TC). A disconnect clutch for selectively connecting an engine with a TC includes a pocket plate that movably mounts to the TC. The pocket plate includes pockets movably seating therein struts that engage notches in a notch plate to lock the pocket plate to the notch plate. A selector plate moves between deactivated and activated positions such that the struts shift into and out of engagement with the notch plate notches, respectively. An activation device is selectively actuable to move the selector plate between activated and deactivated positions. A latching mechanism automatically transitions to a latched state responsive to the selector plate being activated. When latched, this latching mechanism retains the selector plate in the activated position.

公开(公告)号：US10107340B1

公开(公告)日：2018-10-23

申请号：US15479368

申请日：2017-04-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Farzad Samie ,  Tito R. Huffman ,  Chunhao J. Lee

IPC: F16D27/08 ,  F16D27/14

Abstract: A device is configured to control activation of a low-friction clutch, wherein the low-friction clutch includes a first member coaxial to a second member and a controllable activation device interposable therebetween. The device includes a piston that is mechanically coupled to the activation device, a spring that is disposed to urge the piston in a first direction, a controllable electrical coil disposed adjacent to the piston. The electrical coil is disposed to generate an electro-magnetic force to urge the piston in a second direction that is opposed to the first direction when activated, and the spring and the electrical coil interact with the piston to selectively mechanically couple the first and second members via the controllable activation device.

公开(公告)号：US20180291968A1

公开(公告)日：2018-10-11

申请号：US15479368

申请日：2017-04-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Farzad Samie ,  Tito R. Huffman ,  Chunhao J. Lee

IPC: F16D27/08 ,  F16D27/14

CPC classification number: F16D27/08 ,  F16D27/14

Abstract: A device is configured to control activation of a low-friction clutch, wherein the low-friction clutch includes a first member coaxial to a second member and a controllable activation device interposable therebetween. The device includes a piston that is mechanically coupled to the activation device, a spring that is disposed to urge the piston in a first direction, a controllable electrical coil disposed adjacent to the piston. The electrical coil is disposed to generate an electro-magnetic force to urge the piston in a second direction that is opposed to the first direction when activated, and the spring and the electrical coil interact with the piston to selectively mechanically couple the first and second members via the controllable activation device.

公开(公告)号：US20180050686A1

公开(公告)日：2018-02-22

申请号：US15239010

申请日：2016-08-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Venkata Prasad Atluri ,  Norman K. Bucknor ,  Robert S. Conell ,  Suresh Gopalakrishnan ,  Lei Hao ,  Chunhao J. Lee ,  Derek F. Lahr ,  Dongxu Li ,  Shifang Li ,  Chandra S. Namuduri ,  Thomas W. Nehl ,  Avoki M. Omekanda ,  Bob R. Powell, JR. ,  Rashmi Prasad ,  Farzad Samie ,  Neeraj S. Shidore ,  Aaron M. Sullivan

IPC: B60W20/40 ,  B60W10/06 ,  B60W10/08 ,  B60W10/30 ,  B60W20/13 ,  B60W20/50 ,  B60K6/26 ,  B60K6/48 ,  F02N11/04

CPC classification number: B60W20/40 ,  B60K6/26 ,  B60K6/387 ,  B60K6/48 ,  B60K2006/268 ,  B60K2006/4808 ,  B60K2006/4816 ,  B60K2006/4825 ,  B60K2006/4833 ,  B60W10/06 ,  B60W10/08 ,  B60W10/30 ,  B60W20/13 ,  B60W20/50 ,  B60W2510/244 ,  B60W2720/10 ,  B60Y2200/92 ,  B60Y2300/18066 ,  B60Y2300/18125 ,  B60Y2300/182 ,  F02N11/04 ,  Y02T10/6221 ,  Y02T10/6252 ,  Y02T10/6256 ,  Y02T10/626 ,  Y02T10/6278 ,  Y02T10/6286 ,  Y10S903/906 ,  Y10S903/93

Abstract: A hybrid vehicle propulsion includes an engine and a first electric machine, where each is configured to selectively provide torque to propel the vehicle. The propulsion system also includes a second electric machine coupled to the engine to provide torque to start the engine from an inactive state. A high-voltage power source is configured to power both of the first electric machine and the second electric machine over a high-voltage bus. The propulsion system further includes a controller programmed to deactivate the engine and propel the vehicle using the first electric machine in response to the vehicle being driven at a steady-state speed for a predetermined duration of time. The controller is also programmed to restart the engine using the second electric machine powered by the high-voltage power source.

公开(公告)号：US20180015817A1

公开(公告)日：2018-01-18

申请号：US15211681

申请日：2016-07-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Farzad Samie ,  Derek F. Lahr ,  Peter Beller ,  Chunhao J. Lee

IPC: B60K6/50 ,  F16H57/04 ,  B60K6/36 ,  B60K6/387

CPC classification number: B60K6/50 ,  B60K6/30 ,  B60K6/36 ,  B60K6/387 ,  B60K6/48 ,  B60K2006/4825 ,  B60Y2200/92 ,  B60Y2400/424 ,  B60Y2400/426 ,  B60Y2400/70 ,  F16H47/065 ,  F16H57/0457 ,  Y02T10/6221 ,  Y02T10/6252 ,  Y10S903/909 ,  Y10S903/914 ,  Y10S903/915

Abstract: A geartrain for a powertrain system is disposed to transfer mechanical power between an internal combustion engine, an electric machine and a driveline. The geartrain includes a flywheel, a torque converter, an off-axis mechanical connection and a transmission gearbox. The off-axis mechanical connection includes a first element rotatably coupled to a second element. The flywheel is coupled to a crankshaft of the internal combustion engine. The torque converter includes a pump, a turbine and a pump hub, and the transmission gearbox includes an input member. The pump of the torque converter is coupled to the flywheel, and the pump hub is coupled to the first element of the off-axis mechanical connection. The second element of the off-axis mechanical connection is coupled to a rotor of the electric machine, and the turbine of the torque converter is coupled to the input member of the transmission gearbox.

公开(公告)号：US20170326965A1

公开(公告)日：2017-11-16

申请号：US15590462

申请日：2017-05-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Derek F. Lahr ,  Farzad Samie ,  Norman K. Bucknor ,  Chunhao J. Lee ,  Dongxu Li ,  Chandra S. Namuduri ,  Alexandru Rajala

IPC: B60K6/50 ,  B60K6/40 ,  B60K6/54 ,  B60K6/547 ,  B60K6/20

CPC classification number: B60K6/50 ,  B60K6/20 ,  B60K6/40 ,  B60K6/54 ,  B60K6/547

Abstract: A powertrain system is described, and includes an internal combustion engine including a crankshaft and an electric machine including a rotatable shaft, wherein the rotatable shaft is coupled to a motor pulley. A torque converter includes an impeller and a pump, wherein the pump is coupled to an outer sheave. An off-axis mechanical drive system includes the outer sheave of the torque converter rotatably coupled to the motor pulley of the electric machine. The electric machine is coupled to the pump of the torque converter via the off-axis mechanical drive system, and the crankshaft is coupled to the pump of the torque converter via a clutch.

公开(公告)号：US20170268669A1

公开(公告)日：2017-09-21

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: F16H61/70 ,  F16H37/02

CPC classification number: F16H61/702 ,  F16H37/022 ,  F16H61/6646 ,  F16H2200/2005 ,  F16H2200/2035 ,  F16H2200/2064 ,  F16H2200/2066 ,  F16H2200/2082 ,  F16H2200/2094

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.

公开(公告)号：US09709102B2

公开(公告)日：2017-07-18

申请号：US14739421

申请日：2015-06-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Farzad Samie ,  Tito R. Huffman ,  Chunhao J. Lee ,  Dongxu Li

IPC: F16D25/06 ,  F16D25/0638 ,  F16D25/04 ,  F16H59/74 ,  F16H61/30 ,  F16D25/12 ,  F16D48/02 ,  B60W10/06

CPC classification number: F16D25/0638 ,  B60W10/06 ,  F16D25/044 ,  F16D25/12 ,  F16D48/02 ,  F16H57/0441 ,  F16H57/08 ,  F16H59/74 ,  F16H61/30 ,  F16H63/3026 ,  F16H2059/746 ,  F16H2061/305 ,  F16H2063/3036

Abstract: A transmission includes an input member, a hydraulic pump, a hydraulic circuit, a clutch assembly for transferring torque between the input member and an output member. A mechanically-driven hydraulic pump is rotatably coupled to the input member and is fluidly connected to the hydraulic circuit. The clutch assembly includes a friction clutch pack, a clutch-apply piston, a clutch-release piston and a coned-disc spring. The clutch-release piston is fluidly coupled to a first hydraulic chamber that is fluidly coupled to the hydraulic circuit. The clutch-apply piston is fluidly coupled to a second hydraulic chamber that is selectively fluidly coupled to the hydraulic circuit. A second spring urges the clutch-apply piston and the coned-disc spring urges the clutch-release piston. When the hydraulic pump is not rotating, the clutch assembly is activated by the coned-disc spring urging the clutch-release piston.