Patents by Inventor Fulin WEI

Fulin WEI 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).

  • SCR system and engine
    Patent number: 12503968
    Abstract: An SCR system includes a box body, a urea nozzle and a mixer. The mixer is arranged inside the box body, and is cylindrical, and the first end of the mixer faces the urea nozzle. The mixer comprises a check ring, a swirl tube and a perforated pipe which are connected in sequence. The check ring is arranged close to the urea nozzle, and is provided with a plurality of first through holes. Multiple second through holes are formed in the swirl tube, and multiple third through holes are formed in the perforated pipe. The mixer further comprises a retaining ring, an inner ring of the retaining ring is connected to an outer wall of the swirl tube and/or the perforated pipe, and an outer ring of the retaining ring is connected to an inner wall of the box body. Also provided is an engine.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: December 23, 2025
    Assignee: WEICHAI POWER CO., LTD.
    Inventors: Dailong Shi, Fulin Wei, Peng Zheng, Jiayun Yang, Xiaoli Zhang, Chao Jiang, Yi Luo
  • SCR SYSTEM AND ENGINE
    Publication number: 20250172084
    Abstract: An SCR system includes a box body, a urea nozzle and a mixer. The mixer is arranged inside the box body, and is cylindrical, and the first end of the mixer faces the urea nozzle. The mixer comprises a check ring, a swirl tube and a perforated pipe which are connected in sequence. The check ring is arranged close to the urea nozzle, and is provided with a plurality of first through holes. Multiple second through holes are formed in the swirl tube, and multiple third through holes are formed in the perforated pipe. The mixer further comprises a retaining ring, an inner ring of the retaining ring is connected to an outer wall of the swirl tube and/or the perforated pipe, and an outer ring of the retaining ring is connected to an inner wall of the box body. Also provided is an engine.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 29, 2025
    Applicant: WEICHAI POWER CO., LTD.
    Inventors: Dailong SHI, Fulin WEI, Peng ZHENG, Jiayun YANG, Xiaoli ZHANG, Chao JIANG, Yi LUO