Patents by Inventor Lidi CHEN

Lidi CHEN 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).

  • Valve lash detection and analysis
    Patent number: 10563545
    Abstract: Some examples described herein may involve determining an advance timing window between the valve opening or closing and a designated time that the valve is scheduled to open or close; determining a closing velocity of the valve; monitoring an engine speed of the engine; determining valve lash information based on the advance timing window, the closing velocity, and the engine speed, wherein the valve lash information identifies a magnitude of the valve lash or whether the magnitude of the valve lash associated with the valve satisfies a threshold; and performing an action based on the valve lash information.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: February 18, 2020
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Zhaoxu Dong, Arun Rajendran, Yifeng Lu, Xuefei Hu, Lidi Chen, Rodney D. Harms
  • VALVE LASH DETECTION AND ANALYSIS
    Publication number: 20190316496
    Abstract: Some examples described herein may involve determining an advance timing window between the valve opening or closing and a designated time that the valve is scheduled to open or close; determining a closing velocity of the valve; monitoring an engine speed of the engine; determining valve lash information based on the advance timing window, the closing velocity, and the engine speed, wherein the valve lash information identifies a magnitude of the valve lash or whether the magnitude of the valve lash associated with the valve satisfies a threshold; and performing an action based on the valve lash information.
    Type: Application
    Filed: April 13, 2018
    Publication date: October 17, 2019
    Applicant: Caterpillar Inc.
    Inventors: Yanchai ZHANG, Zhaoxu DONG, Arun RAJENDRAN, Yifeng LU, Xuefei HU, Lidi CHEN, Rodney D. HARMS