公开(公告)号：US20240359591A1

公开(公告)日：2024-10-31

申请号：US18307669

申请日：2023-04-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Azeem Sarwar ,  Chaitanya Sankavaram ,  Muhammad Aneeq Uz Zaman

IPC: B60L58/16 ,  B60L58/21 ,  G01R31/367 ,  G01R31/378 ,  G01R31/3835 ,  G01R31/396

CPC classification number: B60L58/16 ,  B60L58/21 ,  G01R31/367 ,  G01R31/378 ,  G01R31/3835 ,  G01R31/396

Abstract: Embodiments include methods and systems for identifying a root cause of battery cell degradation in a battery pack. Aspects include collecting voltage data for a plurality of battery cells in the battery pack and identifying a first cell of the plurality of battery cells as a defective battery cell. Aspects also include identifying a second cell of the plurality of battery cells as a nominal battery cell and calculating a self-discharge of the defective battery cell based on the voltage data of the defective battery cell and the nominal battery cell. Aspects further include calculating a capacity fade of the defective battery cell based on the voltage data of the defective battery cell and the nominal battery cell and determining the root cause of a defect of the defective battery cell based on the self-discharge and the capacity fade of the defective cell.

公开(公告)号：US20240168748A1

公开(公告)日：2024-05-23

申请号：US18057001

申请日：2022-11-18

Applicant: GM Global Technology Operations LLC

Inventor： Ramesh Sethu ,  Rami Ismail Debouk ,  Paolo Giusto ,  Azeem Sarwar

IPC: G06F8/65 ,  G06F8/33

CPC classification number: G06F8/65 ,  G06F8/33

Abstract: A system for CI/CD of AI/ML based components includes a cloud infrastructure which receives multiple new requirements from a vehicle designer or a developer, with the new requirements adapted for artificial intelligence/machine learning (AI/ML) based components of a vehicle. A dataset is provided. A metamorphic relations (MR) module receives input information from the dataset and sends MR information to the dataset. A components requirements database includes the new requirements in addition to existing requirements for the AI/ML based components. The MR module also receives components requirements data from the components requirements database and sends the MR information to the components requirements database. An AI/ML algorithm analyzes the input information from the dataset and prepares an updated component dataset.

公开(公告)号：US11170585B2

公开(公告)日：2021-11-09

申请号：US16443383

申请日：2019-06-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chaitanya Sankavaram ,  Dnyanesh G. Rajpathak ,  Azeem Sarwar ,  Xiangxing Lu ,  Dean G. Sorrell ,  Layne K. Wiggins

IPC: G07C5/00 ,  G07C5/08 ,  G07C5/02 ,  G06N20/00

Abstract: A system and method of performing fault diagnosis and analysis for one or more vehicles. The method includes: obtaining design failure mode and effect analysis (DFMEA) data that specifies a plurality of failure modes; receiving diagnostic association data; receiving vehicle operation signals association data; generating augmented DFMEA data that indicates a causal relationship between the diagnostic data and the first set of failure modes, and that indicates a causal relationship between the vehicle operation signals data and the second set of failure modes, wherein the augmented DFMEA data is generated based on the DFMEA data, the diagnostic association data, and the vehicle operation signals association data; and performing fault diagnosis and analysis for the one or more vehicles using the augmented DFMEA data.

公开(公告)号：US11155153B2

公开(公告)日：2021-10-26

申请号：US15995640

申请日：2018-06-01

Applicant: GM Global Technology Operations LLC

Inventor： John A. Cafeo ,  Madhusudan Raghavan ,  Wei Li ,  Anil Bika ,  Azeem Sarwar ,  Ran Y. Gazit ,  Winson Ng ,  Ryan C. Sekol ,  Thomas A. Yersak

IPC: B60K6/42 ,  B60R16/03 ,  H02J7/00 ,  B60R16/04 ,  B60K6/28

Abstract: A vehicle including a hybrid battery pack includes a first battery pack and a second battery pack. The first battery pack has a higher energy density than the second battery pack. The second battery pack has a higher power density than the first battery pack. A power inverter module is connected between the hybrid battery pack and a motor generator unit (MGU) that is connected to a powertrain of the vehicle. The power inverter module is configured to regulate power flow between the hybrid battery pack and the MGU. A battery management module is configured to: control switching of the power inverter module; selectively charge and discharge at least one of the first battery pack and the second battery pack; and selectively charge the first battery pack with power from the second battery pack.

公开(公告)号：US20200180466A1

公开(公告)日：2020-06-11

申请号：US16214813

申请日：2018-12-10

Applicant: GM Global Technology Operations LLC

Inventor： Azeem Sarwar ,  Xiangxing Lu ,  Ciro Spigno ,  Ryan B. Moulliet ,  Jeffrey S. Piasecki ,  Andrew J. Cornelli ,  Charles W. Wampler, II ,  Brian J. Koch ,  Margaux LeBlanc ,  Gus Hatoum

IPC: B60L58/10 ,  G01R31/396 ,  G01R31/382 ,  H01M10/48 ,  G01R31/36

Abstract: System and method of controlling operation of a device having a rechargeable energy storage pack with a plurality of cells, based on propulsion loss assessment. A controller is configured to obtain a state of charge data and an open circuit voltage of the rechargeable energy storage pack. The controller is configured to obtain a state of charge disparity factor (dSOC) from a selected dataset. The state of charge disparity factor (dSOC) is defined as a difference between a minimum value of the state of charge and an average value of the state of charge of the plurality of cells. The controller is configured to control operation of the device based in part on the state of charge disparity factor (dSOC) and a plurality of parameters (Pi), including raising one or more of a plurality of flags each transmitting respective information to a user.

公开(公告)号：US10670385B2

公开(公告)日：2020-06-02

申请号：US15972564

申请日：2018-05-07

Applicant: GM Global Technology Operations LLC

Inventor： Azeem Sarwar ,  Gregory W. Deneszczuk

IPC: G01B7/14 ,  G01M13/021 ,  G01M1/16

Abstract: A device and associated method for monitoring a rotatable member is described, and includes a target wheel coupled to the rotatable member, and a sensor that is disposed to monitor the target wheel. The sensor is configured to generate a signal associated with rotation of the target wheel. A controller is in communication with the sensor and includes an instruction set that is executable to dynamically monitor the signal generated by the sensor during rotation of the target wheel and determine a magnitude of an airgap between the sensor and the target wheel based upon the signal. A variation in the magnitude of the airgap between the sensor and the target wheel can be determined based upon the signal, and a fault associated with the rotating member can be determined based upon the variation in the magnitude of the airgap.

公开(公告)号：US20190339054A1

公开(公告)日：2019-11-07

申请号：US15972564

申请日：2018-05-07

Applicant: GM Global Technology Operations LLC

Inventor： Azeem Sarwar ,  Gregory W. Deneszczuk

IPC: G01B7/14 ,  G01M13/02

Abstract: A device and associated method for monitoring a rotatable member is described, and includes a target wheel coupled to the rotatable member, and a sensor that is disposed to monitor the target wheel. The sensor is configured to generate a signal associated with rotation of the target wheel. A controller is in communication with the sensor and includes an instruction set that is executable to dynamically monitor the signal generated by the sensor during rotation of the target wheel and determine a magnitude of an airgap between the sensor and the target wheel based upon the signal. A variation in the magnitude of the airgap between the sensor and the target wheel can be determined based upon the signal, and a fault associated with the rotating member can be determined based upon the variation in the magnitude of the airgap.

公开(公告)号：US20190311558A1

公开(公告)日：2019-10-10

申请号：US15949255

申请日：2018-04-10

Applicant: GM Global Technology Operations LLC

Inventor： Anil Bika ,  Azeem Sarwar ,  Nathan Thompson ,  Jason Prince ,  James J. Kelly, III ,  Steven J. Samolinski

IPC: G07C5/08

Abstract: A non-integrated monitoring device and method for monitoring a subject vehicle includes monitoring, via a non-integrated sensor, a physical parameter being emitted from the subject vehicle. The physical parameter being emitted from the subject vehicle is analyzed to determine a dynamic signature for the subject vehicle. A baseline signature for the subject vehicle is obtained, and compared to the dynamic signature for the subject vehicle. Occurrence of a fault in a subsystem of the subject vehicle is detected based upon the comparing of the baseline signature for the subject vehicle and the dynamic signature for the subject vehicle, and the occurrence of the fault is communicated to an operator of the subject vehicle.

公开(公告)号：US10408098B2

公开(公告)日：2019-09-10

申请号：US15668756

申请日：2017-08-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Azeem Sarwar ,  Syed B. Mehdi ,  Xiangxing Lu ,  Bryan K. Pryor ,  Shanshan L. Peer

IPC: F01M11/10 ,  F01M1/02 ,  F01M1/16

Abstract: A method of diagnosing a lubrication system of an engine includes controlling an oil pump with a control signal. The control signal is a command having a value for a desired lubrication fluid pressure from the oil pump for a current operating state of the engine. A processing unit compares the value of the control signal for the current operating state of the engine to a threshold control value for the current operating state of the engine. When the processing unit determines that the value of the control signal for the current operating state of the engine deviates from the threshold control value for the current operating state of the engine, the processing unit analyzes the value of the control signal to identify a fault in the lubrication system.

公开(公告)号：US10378501B2

公开(公告)日：2019-08-13

申请号：US15834099

申请日：2017-12-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Azeem Sarwar ,  Chaitanya Sankavaram ,  Xiangxing Lu ,  Syed B Mehdi

IPC: F02M65/00 ,  F02D41/30 ,  F02M59/46

Abstract: An engine fuel delivery system, prognosis system, and method of conducting a fuel pump solenoid prognosis are provided. The engine fuel delivery system includes a fuel pump having a pumping chamber, a closeable inlet valve (such as a fuel pump control solenoid), and a fuel rail to communicate pressurized fuel received from the fuel pump to at least one engine cylinder. The engine fuel delivery system, prognosis system, and method are configured to determine a solenoid current feedback of a fuel pump control solenoid and a variation in the feedback. The fuel delivery system, prognosis system, and method are further configured to indicate a potential solenoid electrical connection fault if the solenoid current feedback is less than a predetermined current threshold and less than a predetermined variation threshold, and to indicate a potential solenoid weakened electromagnetic field fault if the solenoid current feedback is greater than the predetermined variation threshold.