Patents by Inventor Zongfa Xie

Zongfa Xie 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: 11111825
    Abstract: The present invention discloses a hydraulic valve mechanism with variable valve opening times and an internal combustion engine, which can effectively implement a single-opening working mode, a two-opening working mode or a multi-opening working mode of a valve in the same working cycle, and can implement a rapid and stable switchover among various working modes according to working condition requirements of the internal combustion engine. A main structure thereof includes a housing, a valve cam including a main protrusion and at least one auxiliary protrusion, a hydraulic rotary valve having a hydraulic switch valve function, a hydraulic drive component, a valve drive component, and the like. Oil passages of the hydraulic drive component, the hydraulic rotary valve, and the valve drive component are in communication.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: September 7, 2021
    Assignee: LONGKOU ZHONGYU INVESTMENT HOLDING LTD.
    Inventors: Zhaoyu Wang, Zongfa Xie, Kang Han
  • Publication number: 20210262368
    Abstract: The present invention discloses a hydraulic valve mechanism with variable valve opening times and an internal combustion engine, which can effectively implement a single-opening working mode, a two-opening working mode or a multi-opening working mode of a valve in the same working cycle, and can implement a rapid and stable switchover among various working modes according to working condition requirements of the internal combustion engine. A main structure thereof includes a housing, a valve cam including a main protrusion and at least one auxiliary protrusion, a hydraulic rotary valve having a hydraulic switch valve function, a hydraulic drive component, a valve drive component, and the like. Oil passages of the hydraulic drive component, the hydraulic rotary valve, and the valve drive component are in communication.
    Type: Application
    Filed: March 18, 2020
    Publication date: August 26, 2021
    Applicant: LONGKOU ZHONGYU INVESTMENT HOLDING LTD.
    Inventors: Zhaoyu WANG, Zongfa XIE, Kang HAN
  • Patent number: 9995188
    Abstract: The present invention relates to a valve train mechanism and a fuel supply system of internal combustion engine, and particularly relates to an oil control device of a hydraulic fully variable valve system of the internal combustion engine. This device connected with the hydraulic valve system of internal combustion engine, the device consists of a housing, a rotary valve, a hydraulic accumulator and a transmission mechanism. The rotary valve, the hydraulic accumulator and the transmission mechanism are installed in the housing. The rotary valve consists of a rotary valve shaft and a rotary valve sleeve. The hydraulic accumulator consists of an accumulator piston, an accumulator spring, an end cover, a sealing seat ring and a rubber gasket and is installed in the cavity at one end of the housing. An accumulator chamber is provided between the rotary valve and the hydraulic accumulator. The transmission mechanism consists of a transmission gear, a gear shaft and a cross slide coupling.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: June 12, 2018
    Assignee: Shandong University
    Inventor: Zongfa Xie
  • Publication number: 20160237865
    Abstract: The present invention relates to a valve train mechanism and a fuel supply system of internal combustion engine, and particularly relates to an oil control device of a hydraulic fully variable valve system of the internal combustion engine. This device connected with the hydraulic valve system of internal combustion engine, the device consists of a housing, a rotary valve, a hydraulic accumulator and a transmission mechanism. The rotary valve, the hydraulic accumulator and the transmission mechanism are installed in the housing. The rotary valve consists of a rotary valve shaft and a rotary valve sleeve. The hydraulic accumulator consists of an accumulator piston, an accumulator spring, an end cover, a sealing seat ring and a rubber gasket and is installed in the cavity at one end of the housing. An accumulator chamber is provided between the rotary valve and the hydraulic accumulator. The transmission mechanism consists of a transmission gear, a gear shaft and a cross slide coupling.
    Type: Application
    Filed: August 12, 2013
    Publication date: August 18, 2016
    Inventor: Zongfa Xie