Patents by Inventor Yijun Tu

Yijun Tu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7660694
    Abstract: A method and arrangement is provided for estimating an initial value for an internal battery temperature of a vehicle using a four zone process that determines which of a predetermined set of time zones correlates with a measured period of time for an engine of the vehicle being in an engine-off condition. Once the time zone is determined, an initial estimated value of the internal temperature of the battery is determined as a function of a set of parameters correlated with the determined time zone. The set of time zones include a holding time zone, a model based estimation time zone which is greater in time than the holding time zone, a first self-adjustment zone which is greater in time than the model based estimation time zone, and a second self-adjustment time zone which is greater in time than the first self-adjustment time zone.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: February 9, 2010
    Assignee: Chrysler Group LLC
    Inventors: Zhijian J. Wu, Michel Trumbo, Yijun Tu, Min Han
  • Patent number: 7652887
    Abstract: An electronic control module mounted to an adaptive vehicle mount or directly onto a car body. The control module includes a casing which may have at least one leverage tab integral with the casing. The casing also includes an integral fastening tab, and may act as a lever such that the leverage tab and fastener tab withstand forces which counterbalances the force exerted on the casing when the casing is mounted to an adaptive vehicle mount or directly onto the car body.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: January 26, 2010
    Assignee: Chrysler Group LLC
    Inventors: Yijun Tu, Katherine Oster, Beverly Katz, Mahmoud A. Anani, Christina M. Marcath
  • Publication number: 20080310124
    Abstract: An electronic control module mounted to an adaptive vehicle mount or directly onto a car body. The control module includes a casing which may have at least one leverage tab integral with the casing. The casing also includes an integral fastening tab, and may act as a lever such that the leverage tab and fastener tab withstand forces which counterbalances the force exerted on the casing when the casing is mounted to an adaptive vehicle mount or directly onto the car body.
    Type: Application
    Filed: June 15, 2007
    Publication date: December 18, 2008
    Inventors: Yijun Tu, Katherine Oster, Beverly Katz, Mahmoud A. Anani, Christina M. Marcath
  • Publication number: 20070093952
    Abstract: A method and arrangement is provided for estimating an initial value for an internal battery temperature of a vehicle using a four zone process that determines which of a predetermined set of time zones correlates with a measured period of time for an engine of the vehicle being in an engine-off condition. Once the time zone is determined, an initial estimated value of the internal temperature of the battery is determined as a function of a set of parameters correlated with the determined time zone. The set of time zones include a holding time zone, a model based estimation time zone which is greater in time than the holding time zone, a first self-adjustment zone which is greater in time than the model based estimation time zone, and a second self-adjustment time zone which is greater in time than the first self-adjustment time zone.
    Type: Application
    Filed: July 11, 2006
    Publication date: April 26, 2007
    Inventors: Zhijian Wu, Michel Trumbo, Yijun Tu, Min Han
  • Publication number: 20070010930
    Abstract: A method and arrangement is provided for estimating an initial value for an internal battery temperature of a vehicle using a four zone process that determines which of a predetermined set of time zones correlates with a measured period of time for an engine of the vehicle being in an engine-off condition. Once the time zone is determined, an initial estimated value of the internal temperature of the battery is determined as a function of a set of parameters correlated with the determined time zone. The set of time zones include a holding time zone, a model based estimation time zone which is greater in time than the holding time zone, a first self-adjustment zone which is greater in time than the model based estimation time zone, and a second self-adjustment time zone which is greater in time than the first self-adjustment time zone.
    Type: Application
    Filed: September 12, 2006
    Publication date: January 11, 2007
    Inventors: Zhijian Wu, Michel Trumbo, Yijun Tu, Min Han
  • Patent number: 6902319
    Abstract: A method of estimating an internal temperature of a vehicle battery is based on heat transfer between a heat source and the battery. In addition to the heat source, airflow generated by vehicle movement and radiator fans affects the internal temperature of the battery. The method estimates an initial internal temperature of the battery at engine startup based on how long the engine was off. The temperature of the heat source is determined. A transfer function is determined to represent the effect of the airflow. The method updates a current internal temperature of the battery based on the initial internal temperature and an integration of the transfer function and the heat source temperature.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: June 7, 2005
    Assignee: DaimlerChrysler Corporation
    Inventors: Zhijian James Wu, Jyh-Laing L. Lin, Dean Marshall, Brad Schoeff, Michel Trumbo, John G Hatfield, James Karlet, Yijun Tu
  • Publication number: 20050074048
    Abstract: A method of estimating an internal temperature of a vehicle battery is based on heat transfer between a heat source and the battery. In addition to the heat source, airflow generated by vehicle movement and radiator fans affects the internal temperature of the battery. The method estimates an initial internal temperature of the battery at engine startup based on how long the engine was off. The temperature of the heat source is determined. A transfer function is determined to represent the effect of the airflow. The method updates a current internal temperature of the battery based on the initial internal temperature and an integration of the transfer function and the heat source temperature.
    Type: Application
    Filed: January 8, 2004
    Publication date: April 7, 2005
    Inventors: Zhijian Wu, Jyh-Laing Lin, Dean Marshall, Brad Schoeff, Michel Trumbo, John Hatfield, James Karlet, Yijun Tu