公开(公告)号：US10424127B2

公开(公告)日：2019-09-24

申请号：US15688457

申请日：2017-08-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shengbing Jiang ,  Xinyu Du ,  Steven W. Holland ,  Chaitanya Sankavaram ,  Azeem Sarwar ,  Shiming Duan

IPC: G01M17/00 ,  G06F11/30 ,  G06F7/00 ,  G06F19/00 ,  G07C5/00 ,  G05D1/00 ,  G07C5/08

Abstract: A controller architecture for monitoring an autonomic vehicle control system includes a first controller, a second controller, a telematics controller, a third controller, a plurality of subsystem controllers, a first and a second communication bus, and a first and a second communication link. The telematics controller in communication with the first controller. The second controller includes a second processor and a second memory device. Each subsystem controller is configured to effect operation of one of a subsystem, wherein each of the subsystem controllers includes a vehicle health monitor (VHM) agent. The third controller includes a third processor and a third memory device. A first instruction set includes a prognostic classification routine based upon inputs from the VHM agents of the plurality of subsystem controllers. The telematics controller is disposed to communicate an output from the prognostic classification routine to an off-board controller.

公开(公告)号：US20190172274A1

公开(公告)日：2019-06-06

申请号：US15830262

申请日：2017-12-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shiming Duan ,  Yao Hu ,  Christopher H. Knieper

IPC: G07C5/08 ,  G07C5/00

Abstract: A vehicle including a fluidic subsystem composed of an electric motor, a motor driver and a fluidic pump that is disposed in a fluidic circuit of the vehicle is described. A controller includes an instruction set that is executable to determine operating parameters associated with the fluidic subsystem, and determine a plurality of power efficiency parameters for the fluidic subsystem based upon the operating parameters. The power efficiency parameters include a hydraulic power efficiency, an electro-mechanical power efficiency and an electric power efficiency. The controller can determine a state of health for the fluidic subsystem based upon the power efficiency parameters, and detect a fault in the fluidic subsystem when the state of health is less than a threshold state of health. The fault can be communicated to a vehicle operator.

公开(公告)号：US10273867B2

公开(公告)日：2019-04-30

申请号：US15423045

申请日：2017-02-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shiming Duan ,  Christopher H. Knieper

IPC: F01P5/12 ,  F01P5/14 ,  F01P7/16 ,  F01P11/18

Abstract: A thermal management system includes an electric coolant pump, power source, and controller. The pump is in fluid communication with a heat source and a radiator, and has pump sensors for determining a pump voltage, speed, and current. The battery energizes the sensors. The controller receives the voltage, speed, and current from the sensors, determines a performance of the pump across multiple operating regions, calculates a numeric state of health (SOH) quantifying degradation severity for each of a plurality of pump characteristics across the regions, and executes a control action when the calculated numeric SOH for any region is less than a calibrated SOH threshold. The pump characteristics include pump circuit, leaking/clogging, bearing, and motor statuses. A vehicle includes an engine or other heat source, a radiator; and the thermal management system. The controller may execute a prognostic method for the electric coolant pump in the vehicle.

公开(公告)号：US10152834B1

公开(公告)日：2018-12-11

申请号：US15685336

申请日：2017-08-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chaitanya Sankavaram ,  Shiming Duan ,  Layne Wiggins ,  Stephen Levijoki ,  Dean Sorrell ,  Todar Kuzmanov

IPC: F23D11/38 ,  G07C5/08 ,  F01P1/02 ,  F02D9/02

Abstract: A method of conducting prognosis for an airflow management system for a combustion engine includes adjusting a throttle body valve position control signal in response to a detected airflow variation and monitoring an airflow variation compensation (AVC) value corresponding to a degree of adjustment of the control signal. The method also includes generating a throttle body coking severity metric based on at least a plurality of residual error values and the AVC value, and executing at least one response action based on the throttle body coking severity metric exceeding a predetermined threshold.

公开(公告)号：US20180216517A1

公开(公告)日：2018-08-02

申请号：US15423045

申请日：2017-02-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shiming Duan ,  Christopher H. Knieper

IPC: F01P5/12

CPC classification number: F01P5/12 ,  F01P5/14 ,  F01P7/16 ,  F01P7/164 ,  F01P11/18 ,  F01P2005/125 ,  F01P2025/32 ,  F01P2025/60 ,  F01P2031/00 ,  F01P2031/18

Abstract: A thermal management system includes an electric coolant pump, power source, and controller. The pump is in fluid communication with a heat source and a radiator, and has pump sensors for determining a pump voltage, speed, and current. The battery energizes the sensors. The controller receives the voltage, speed, and current from the sensors, determines a performance of the pump across multiple operating regions, calculates a numeric state of health (SOH) quantifying degradation severity for each of a plurality of pump characteristics across the regions, and executes a control action when the calculated numeric SOH for any region is less than a calibrated SOH threshold. The pump characteristics include pump circuit, leaking/clogging, bearing, and motor statuses. A vehicle includes an engine or other heat source, a radiator; and the thermal management system. The controller may execute a prognostic method for the electric coolant pump in the vehicle.