利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.014 秒)

    Piston Device for Internal Combustion Engine
    1.
    发明申请
    Piston Device for Internal Combustion Engine 审中-公开
    内燃机活塞装置

    公开(公告)号：US20070272078A1

    公开(公告)日：2007-11-29

    申请号：US10597745

    申请日：2005-01-21

    申请人： Takeshi Yamada ,  Hideki Yoshida ,  Naoki Iijima

    发明人： Takeshi Yamada ,  Hideki Yoshida ,  Naoki Iijima

    IPC分类号： F16J1/04 ,  F02F3/00

    CPC分类号： F16J9/20 ,  F02F3/00 ,  F16J15/326

    摘要： A top ring has gas seal and oil control functions realizing approximately the same amount of oil consumption and blow-by gas as realized by three rings. A piston assembly includes a piston body having a top land portion and a ring groove on its periphery, and a piston ring having a U-shaped cross section including upper and lower leg portions and a base portion connecting the leg portions, and attached to the top land portion. Axial length from boundary of the base portion of the piston ring and the upper leg portion to a lower surface of the lower leg portion is larger than that from an upper surface of the top land portion to lower surface of the ring groove fitting the lower leg portion. Alternatively, axial grooves are on a thrust side of the top land portion, or a V-shaped annular groove is in a second land portion.

    摘要翻译： 顶环具有气密封和油控功能，实现与三环实现大致相同的油耗和窜气。 活塞组件包括：活塞体，其周边具有顶部接地部分和环形槽;以及活塞环，其具有包括上部和下部腿部的U形横截面和连接腿部的基部，并附接到 顶部陆地部分。 从活塞环的基部和上腿部分到下腿部的下表面的边界的轴向长度大于从顶部接合部的上表面到安装小腿的环槽的下表面的轴向长度 一部分。 或者，轴向槽位于顶部陆部的推力侧，或者V形环状槽位于第二陆部。