Patents by Inventor Xunjin Xu

Xunjin Xu 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).

  • Clutchless transmission apparatus for controlling gear-position shifting and control method thereof
    Patent number: 8346446
    Abstract: A clutchless transmission apparatus and control method thereof. The transmission apparatus comprises a motor (10) and a transmission (20), said motor (10) is connected to said transmission (20) and supplies power to said transmission (20) via an input shaft of the transmission (20), wherein said apparatus further comprises a control device (30), which is electrically connected to said motor (10) and said transmission (20), wherein said control device (30) is configured to determine whether a gear-position shifting is required based on rotation speed of said transmission (20), if a gear-position shifting is required, regulates torque of said motor (10) to control said transmission (20) to disengage, and then regulates the rotation speed of said motor (10) based on the rotation speed of said transmission (20) to control said transmission (20) to engage for shifting gear-position.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: January 1, 2013
    Assignee: BYD Co. Ltd.
    Inventors: Kai Liu, Jian Gong, Xuguang Zhou, Bo Zu, Guangming Yang, Axi Qi, Xiaohua Tang, Bo Zhou, Xunjin Xu
  • Clutchless Transmission Apparatus for Controlling Gear-Position Shifting and Control Method Thereof
    Publication number: 20100114441
    Abstract: A clutchless transmission apparatus and control method thereof. The transmission apparatus comprises a motor(10) and a transmission(20), said motor(10) is connected to said transmission(20) and supplies power to said transmission(20) via an input shaft of the transmission(20), wherein said apparatus further comprises a control device(30), which is electrically connected to said motor(10) and said transmission(20), wherein said control device(30) is configured to determine whether a gear-position shifting is required based on rotation speed of said transmission(20), if a gear-position shifting is required, regulates torque of said motor(10) to control said transmission(20) to disengage, and then regulates the rotation speed of said motor(10) of said transmission(20) to control said transmission(20) to engage for shifting gear-position.
    Type: Application
    Filed: April 18, 2008
    Publication date: May 6, 2010
    Inventors: Kai Liu, Jian Gong, Xuguang Zhou, Bo Zu, Guangming Yang, Axi Qi, Xiaohua Tang, Bo Zhou, Xunjin Xu