Patents by Inventor Jyuta TASE

Jyuta TASE 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).

  • Sliding structure for internal combustion engine, method for controlling idling operation, and method for controlling operation of internal combustion engine
    Patent number: 11111875
    Abstract: In a sliding structure for an internal combustion, a cylinder has recesses in a stroke center region. Piston rings have inclined surfaces on an outer circumferential surface, and a lubricating oil flows between the inner wall surface and the outer circumferential surface that relatively move via the inclined surfaces. At any RPM equal to or greater than at idle, a center friction coefficient at the stroke center region through which the piston rings pass at the highest speed is less than a center friction coefficient when no recesses are formed in the stroke center region. Contrarily, at the RPM, an outside friction coefficient when the piston rings pass through a region outside the stroke center region is less than an outside friction coefficient when the recesses are formed in the outside region. As a result, further improved low fuel efficiency is achieved for the dimple liner technique.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: September 7, 2021
    Inventors: Mitsuru Urabe, Hirokazu Murata, Kazuhiko Kanno, Jyuta Tase, Kazumi Moroi
  • SLIDING STRUCTURE FOR INTERNAL COMBUSTION ENGINE, METHOD FOR CONTROLLING IDLING OPERATION, AND METHOD FOR CONTROLLING OPERATION OF INTERNAL COMBUSTION ENGINE
    Publication number: 20200325844
    Abstract: In a sliding structure for an internal combustion, a cylinder has recesses in a stroke center region. Piston rings have inclined surfaces on an outer circumferential surface, and a lubricating oil flows between the inner wall surface and the outer circumferential surface that relatively move via the inclined surfaces. At any RPM equal to or greater than at idle, a center friction coefficient at the stroke center region through which the piston rings pass at the highest speed is less than a center friction coefficient when no recesses are formed in the stroke center region. Contrarily, at the RPM, an outside friction coefficient when the piston rings pass through a region outside the stroke center region is less than an outside friction coefficient when the recesses are formed in the outside region. As a result, further improved low fuel efficiency is achieved for the dimple liner technique.
    Type: Application
    Filed: May 30, 2017
    Publication date: October 15, 2020
    Inventors: Mitsuru URABE, Hirokazu MURATA, Kazuhiko KANNO, Jyuta TASE, Kazumi MOROI