公开(公告)号：US11356006B2

公开(公告)日：2022-06-07

申请号：US16774696

申请日：2020-01-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Suresh Gopalakrishnan ,  Chandra S. Namuduri ,  Alexandru Rajala ,  Thomas W. Nehl ,  Xiaohui Du ,  Edward L. Kaiser

IPC: H02K24/00 ,  H02K7/00 ,  B60L50/60 ,  B60L53/22 ,  H02K11/225

Abstract: An electric machine includes a machine rotor circumscribed by a machine stator, and having a rotor shaft, rotor stack, and end cap which rotate about an axis. The end cap includes lobes equal in number to a number of pole pairs of the machine rotor. A position sensor assembly has a predetermined alignment with the machine rotor and stator. The sensor assembly includes a sensor rotor formed by the lobes and a sensor stator having a printed circuit board with conductive sine and cosine traces. Machine rotor rotation causes the sensor assembly to output an unmodulated sine and cosine signals to a controller, which then calculates a calibrated reference angle. A magnetic axis of an electrical phase of the machine is aligned with and bisects a peak of the sine trace. A direct axis of the machine rotor aligns with an edge of a lobe.

公开(公告)号：US10017044B2

公开(公告)日：2018-07-10

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 ,  B60K6/20 ,  B60K6/54 ,  B60K6/547

CPC classification number: B60K6/50 ,  B60K6/20 ,  B60K6/40 ,  B60K6/48 ,  B60K6/54 ,  B60K6/547 ,  B60K2006/4825 ,  B60K2006/4833 ,  F16H7/02 ,  F16H7/12 ,  F16H7/1281 ,  F16H2007/0808 ,  F16H2007/0865 ,  F16H2007/0874 ,  F16H2007/0893 ,  F16H2007/0897 ,  Y02T10/6221

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：US09657705B2

公开(公告)日：2017-05-23

申请号：US14208434

申请日：2014-03-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alan G. Holmes ,  Michael G. Reynolds ,  Alexandru Rajala ,  Chandra S. Namuduri ,  Venkata Prasad Atluri

IPC: F02N11/00 ,  F02N15/06 ,  F02N11/04 ,  B60K6/20 ,  F16H7/02 ,  F02N15/08 ,  F02N15/04

CPC classification number: F02N15/06 ,  B60K6/20 ,  B60K6/485 ,  F02N11/04 ,  F02N15/043 ,  F02N15/067 ,  F02N15/08 ,  F16H7/02 ,  Y02T10/6226 ,  Y10T74/138

Abstract: A powertrain and an electromechanical apparatus are disclosed. A ring gear is attached to a first distal end of a crankshaft such that the ring gear and the crankshaft are rotatable in unison about a longitudinal axis. A motor-generator includes a motor/generator shaft being rotatable about a first axis spaced from the longitudinal axis. A starter mechanism includes a first starter gear coupleable to the motor/generator shaft and rotatable about a second axis spaced from the longitudinal axis. The first starter gear is movable along the second axis between a first position engaging the ring gear such that torque is transferred from the motor/generator shaft through the first starter gear and the ring gear to the crankshaft to start the engine, and a second position disengaged from the ring gear to rotatably disconnect the starter mechanism from the ring gear.

公开(公告)号：US20190323475A1

公开(公告)日：2019-10-24

申请号：US15961216

申请日：2018-04-24

Applicant: GM Global Technology Operations LLC

Inventor： Chandra S. Namuduri ,  Lei Hao ,  Alexandru Rajala ,  Thomas W. Nehl

IPC: F02N15/04 ,  F02N11/08 ,  F16H1/28 ,  H02K5/15 ,  H02K5/22 ,  H02K7/08 ,  H02K7/116 ,  H02K11/21 ,  H02K11/33

Abstract: A starter assembly includes a partial planetary gear set connected to a pinion gear slidable along a first axis. The starter also includes a motor casing housing a brushless electric motor and having a first bearing. The motor includes multi-phase stator and rotor assemblies arranged inside the casing concentrically relative to the first axis. The rotor assembly has a rotor with a shaft supported by the first bearing and connected to a sun gear engaging the gear set, and a rotor position and speed sensor target. The starter additionally includes a motor end-cap for mating with and enclosing the motor casing and having a second bearing supporting the shaft. The starter also includes an electronics cover with a power connector for mating with the end-cap and housing an electronic commutator assembly. The commutator assembly includes power electronics, and control processor electronics arranged between the end-cap and the power electronics.

公开(公告)号：US20180050685A1

公开(公告)日：2018-02-22

申请号：US15239004

申请日：2016-08-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Venkata Prasad Atluri ,  Peter Beller ,  Norman K. Bucknor ,  Tito R. Huffman ,  Derek F. Lahr ,  Chunhao J. Lee ,  Dongxu Li ,  Chandra S. Namuduri ,  Thomas W. Nehl ,  Madhusudan Raghavan ,  Alexandru Rajala ,  Farzad Samie ,  Neeraj S. Shidore

IPC: B60W20/40 ,  B60W10/08 ,  B60W10/06 ,  B60W10/02 ,  B60W10/30 ,  B60K6/543 ,  B60K6/48

CPC classification number: B60W20/40 ,  B60K6/40 ,  B60K6/48 ,  B60K6/543 ,  B60K2006/4825 ,  B60W10/02 ,  B60W10/023 ,  B60W10/026 ,  B60W10/04 ,  B60W10/06 ,  B60W10/08 ,  B60W10/30 ,  B60W20/20 ,  B60W2510/244 ,  B60W2520/10 ,  B60W2540/10 ,  B60W2710/024 ,  B60W2710/0644 ,  B60W2710/081 ,  B60W2710/305 ,  B60Y2200/92 ,  B60Y2300/182 ,  Y02T10/6221 ,  Y02T10/6252 ,  Y10S903/93

Abstract: A vehicle propulsion system includes an engine and a first electric machine each configured to selectively provide torque to propel the vehicle. A second electric machine is 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. A propulsion controller is programmed to start the engine using cranking torque output from the second electric machine powered by the high-voltage power source. The controller is also programmed to operate both of the first electric machine and the combustion engine to propel the vehicle in response to an acceleration demand greater than a threshold. The controller is further programmed to decouple the engine and propel the vehicle using the first electric machine in response to vehicle speed less than a speed threshold.

公开(公告)号：US20170326964A1

公开(公告)日：2017-11-16

申请号：US15583383

申请日：2017-05-01

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: B60K6/48 ,  B60K6/40 ,  B60K6/36 ,  B60K6/52 ,  B60K6/38

CPC classification number: B60K6/48 ,  B60K6/36 ,  B60K6/38 ,  B60K6/387 ,  B60K6/40 ,  B60K6/52 ,  B60K17/28 ,  B60K17/346 ,  B60K23/0808 ,  B60K2006/4808 ,  B60K2023/0833 ,  B60Y2200/92 ,  B60Y2400/82 ,  Y02T10/6221 ,  Y02T10/626

Abstract: A drivetrain system for a vehicle is described, and includes an internal combustion engine, a geartrain, an electric machine, a power take-off unit, and a driveline. The internal combustion engine is coupled to the geartrain via a disconnect clutch and a torque converter. The geartrain includes a transmission and a differential gearset, including an output member of the transmission coupled to an input member of the differential gearset. The input member of the differential gearset is coupled to a rotor of the electric machine and the power take-off unit. The differential gearset is coupled to first and second intermediate driveshaft members of the driveline to transfer propulsion power to vehicle wheels that are arranged in a front-wheel configuration.

公开(公告)号：US20160167499A1

公开(公告)日：2016-06-16

申请号：US15051133

申请日：2016-02-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alan G. Holmes ,  Alexandru Rajala ,  Chandra S. Namuduri ,  Venkata Prasad Atluri

IPC: B60K6/22

CPC classification number: B60K6/22 ,  B60K6/40 ,  B60K6/485 ,  B60Y2200/92 ,  B60Y2300/192 ,  B60Y2400/70 ,  Y02T10/6226 ,  Y10S903/904 ,  Y10S903/909 ,  Y10T29/49233

Abstract: A powertrain for a vehicle includes an engine and a method of assembling the powertrain includes providing the engine. A starter mechanism is selectively operable to start the engine. A motor-generator includes an adapter to dispose the motor-generator and the starter mechanism in alternative assembly configurations being a first assembly configuration and a second assembly configuration. The first assembly configuration is when the starter mechanism is coupleable to the adapter to selectively transfer torque from the motor-generator through the adapter and the starter mechanism to start the engine. The second assembly configuration is when the starter mechanism is spaced from the adapter to operate independently of the motor-generator such that the starter mechanism selectively transfers torque to start the engine.

Abstract translation: 用于车辆的动力总成包括发动机，并且组合动力总成的方法包括提供发动机。 启动机构可选择性地操作以启动发动机。 电动发电机包括用于将电动发电机和起动机构配置为替代组装配置的适配器，其为第一组装配置和第二组装配置。 第一组合配置是当启动器机构与适配器耦合以选择性地传递来自电动发电机的转矩通过适配器和起动机构起动发动机时。 第二组合配置是当起动机构与适配器间隔开以独立于电动发电机工作，使得起动机构选择性地传递转矩来启动发动机。

公开(公告)号：US20210234447A1

公开(公告)日：2021-07-29

申请号：US16774696

申请日：2020-01-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Suresh Gopalakrishnan ,  Chandra S. Namuduri ,  Alexandru Rajala ,  Thomas W. Nehl ,  Xiaohui Du ,  Edward L. Kaiser

IPC: H02K24/00 ,  H02K7/00 ,  H02K11/225 ,  B60L50/60 ,  B60L53/22

Abstract: An electric machine includes a machine rotor circumscribed by a machine stator, and having a rotor shaft, rotor stack, and end cap which rotate about an axis. The end cap includes lobes equal in number to a number of pole pairs of the machine rotor. A position sensor assembly has a predetermined alignment with the machine rotor and stator. The sensor assembly includes a sensor rotor formed by the lobes and a sensor stator having a printed circuit board with conductive sine and cosine traces. Machine rotor rotation causes the sensor assembly to output an unmodulated sine and cosine signals to a controller, which then calculates a calibrated reference angle. A magnetic axis of an electrical phase of the machine is aligned with and bisects a peak of the sine trace. A direct axis of the machine rotor aligns with an edge of a lobe.

公开(公告)号：US09866157B2

公开(公告)日：2018-01-09

申请号：US14854187

申请日：2015-09-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Suresh Gopalakrishnan ,  Chandra S. Namuduri ,  Lei Hao ,  Alexandru Rajala

IPC: H02K29/08 ,  H02P6/16 ,  H02K11/215

CPC classification number: H02P6/16 ,  H02K11/215

Abstract: A transmission assembly has an integrated torque machine including a torque machine stator and a torque machine rotor. The torque machine rotor includes at least one set of rotor magnets. An integrated rotational position sensor is configured to monitor rotational position of the torque machine rotor in relation to the torque machine stator. The integrated rotational position sensor includes a sensor rotor element and a sensor stator element. The sensor rotor element includes at least one set of sensor rotor magnets. The sensor rotor element is positioned such that the at least one set of sensor rotor magnets are aligned with respect to a rotor pole of the at least one set of rotor magnets of the torque machine rotor. The sensor stator element is positioned such that the sensor stator element is aligned with a magnetic axis of the torque machine stator.

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.