公开(公告)号：US20170163181A1

公开(公告)日：2017-06-08

申请号：US15358179

申请日：2016-11-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chandra S. Namuduri ,  Rajeev Vyas ,  Fausto Eleazar Vazquez Flores ,  Mark J. Rychlinski ,  Varsha Sadekar

IPC: H02P6/06 ,  F01P7/10 ,  H02P6/14 ,  H02P27/08 ,  H02P29/20

CPC classification number: H02P6/06 ,  B60K11/06 ,  B60L1/003 ,  B60L2240/12 ,  B60L2240/445 ,  F01P7/048 ,  H02P6/14 ,  H02P27/08 ,  H02P29/20 ,  Y02T10/642 ,  Y02T90/16

Abstract: A vehicle including a cooling fan that is rotatably coupled to an electric motor that is electrically powered by a DC power source via an inverter is described. A method for controlling the cooling fan includes monitoring, via a first controller, a vehicle speed, and selecting a preferred operating state for the electric motor based upon the vehicle speed. The preferred operating state includes one of a first command associated with controlling the cooling fan to force air through the cooling system, a second command associated with a fan brake request, and a third command associated with an energy recovery mode. A discrete message from the first controller is communicated to an inverter controller, wherein the discrete message is based upon the preferred operating state for the electric motor. The inverter controller controls the inverter to control the electric motor in response to the discrete message.

公开(公告)号：US10101407B2

公开(公告)日：2018-10-16

申请号：US14948741

申请日：2015-11-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jakob Yonan ,  Varsha Sadekar ,  Mark J. Rychlinski

IPC: G01N27/416 ,  G01R31/36 ,  H01M10/42 ,  H01M10/48 ,  H01M10/06

Abstract: A method and system for diagnosing battery system problems in a vehicle, where the method distinguishes between problems of various battery system components. More particularly, battery connection problems such as loose connections, corroded battery terminals, etc., may be distinguished from battery system problems as a whole. Load related readings that generally reflect the performance of the battery system during a cranking event and one or more non-load related readings may be gathered and used to determine whether there is a battery system problem and whether there is a battery specific problem. If load related readings and/or non-load related readings fail to indicate a battery specific problem, a battery connection problem may be diagnosed.

公开(公告)号：US09587614B2

公开(公告)日：2017-03-07

申请号：US14669954

申请日：2015-03-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mark J. Rychlinski ,  David W. Walters ,  Michael G. Reynolds

IPC: F02N11/08 ,  F02D41/04 ,  F02D35/02

CPC classification number: F02N11/0818 ,  F02D35/02 ,  F02D41/042 ,  F02N11/0825 ,  F02N11/0837 ,  F02N2200/022 ,  F02N2200/023 ,  F02N2200/062 ,  F02N2200/122 ,  Y02T10/48

Abstract: Methods and systems are provided for controlling an auto stop feature of an engine of a vehicle. A sensor is configured to provide information pertaining to engine speed at first full compression of the engine and at predetermined times including and beyond the time to first full compression after commencement of engine crank. A processor is coupled to the sensor, and is configured to disable the auto stop feature if the engine speed is less than a predetermined speed threshold.

Abstract translation: 提供了用于控制车辆发动机的自动停止特征的方法和系统。 传感器被配置为在发动机起动之后的第一次全压缩期间以及包括和超出时间的预定时间提供与发动机转速相关的信息。 处理器耦合到传感器，并且被配置为如果发动机速度小于预定速度阈值则禁用自动停止特征。