公开(公告)号：US3941523A

公开(公告)日：1976-03-02

申请号：US519177

申请日：1974-10-30

申请人： Keiichiro Shin ,  Hiroshi Ozeki ,  Noriyuki Kurio

发明人： Keiichiro Shin ,  Hiroshi Ozeki ,  Noriyuki Kurio

IPC分类号： F01C19/12 ,  F01C21/04 ,  F01C19/08 ,  F04C27/00 ,  F04C29/02

CPC分类号： F01C19/12

摘要： A rotary piston of a rotary piston internal combustion engine has radially and inner and outer annular seals carried within grooves of the rotary piston thrust surface axially facing the engine casing sidewall with the axial end face of the oil seal tapering radially outwards relative to the engine sidewall and forming lip angles between the tapered end wall of the seal such that the lip angle for the outer seal is between 1.degree. and 3.degree., the lip angle for the inner seal is between 3.degree. and 5.degree., and the spring biasing force acting on the radially outer seal is less than that acting on the radially inner seal. Preferably, an oil removal bore is formed in the land portion between the grooves for return of the oil delivered thereto by action of the oil seal to the oil pan of the engine.

摘要翻译： 旋转活塞内燃机的旋转活塞具有径向和内外环形密封件，其承载在旋转活塞推力表面的凹槽内，轴向面向发动机壳体侧壁，其中油封的轴向端面相对于发动机侧壁逐渐向外逐渐变细 并且在密封件的锥形端壁之间形成唇角，使得外部密封件的唇部角度在1度和3度之间，内部密封件的唇部角度在3度和5度之间，并且弹簧偏置力作用 在径向外部密封件上的密封件小于作用在径向内部密封件上的密封件。 优选地，在槽之间的陆部中形成除油孔，用于通过油封的作用将油输送到发动机的油盘上。