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    • 1. 发明专利
    • Piston for internal combustion engine
    • 内燃机活塞
    • JP2011080473A
    • 2011-04-21
    • JP2010257552
    • 2010-11-18
    • Pivotal Engineering Ltdピヴォタル エンジニアリング リミテッド
    • MCLACHLAN PAUL ANTHONY
    • F02B53/00F01C9/00F01C19/00F01C21/06F01C21/08F02B55/02F02B55/04
    • F01C21/06F01C9/002
    • PROBLEM TO BE SOLVED: To provide a piston capable of obtaining appropriate seal relative to a front edge of the piston, a seal groove provided in a side part of the piston and a wall of a combustion chamber in an internal combustion engine using a pivot piston swinging around a pivot point inside of the combustion chamber.
      SOLUTION: A pivot piston includes: a pivot pin; and an arc-like first sealing surface 12 which describes a circumferential path around the pivot pin and forms a removable and replaceable skirt to the piston. The piston also includes an arc-like second sealing surface which describes a circumferential path around the pivot pin and is connected to the arc-like first sealing surface 12 by a floor part 21 of the piston. The arc-like second sealing surface includes at least two arc-like sealing parts 24 arranged on a bed 20 so they will have limited transverse movement on the bed 20. The parts 24 include matching surfaces which restrict the path of the combustion gases between the matching surfaces. The piston also includes a side part seal arranged in a groove 63 of a side part of the piston.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种能够相对于活塞的前边缘获得适当密封的活塞,设置在活塞的侧部中的密封槽和内燃机中的燃烧室的壁,其使用 枢转活塞围绕燃烧室内的枢转点摆动。 解决方案:枢轴活塞包括:枢轴销; 以及弧形的第一密封表面12,其描述围绕枢转销的周向路径并且形成可移动和可更换的裙部到活塞。 活塞还包括弧形的第二密封表面,其描述围绕枢转销的圆周路径,并且通过活塞的底板部分21连接到弧形的第一密封表面12。 弧形的第二密封表面包括布置在床20上的至少两个弧形密封部分24,因此它们将在床20上具有有限的横向运动。部件24包括匹配表面,其限制燃烧气体的路径 匹配表面。 活塞还包括布置在活塞的侧部的凹槽63中的侧部密封件。 版权所有(C)2011,JPO&INPIT
    • 3. 发明专利
    • Screw fluid machine
    • 螺杆流量计
    • JP2008196312A
    • 2008-08-28
    • JP2007029270
    • 2007-02-08
    • Kobe Steel Ltd株式会社神戸製鋼所
    • MATSUKUMA MASAKIMATSUI TAKAMASUUEHARA KAZUHIROWAKITA TAKAYUKI
    • F04C27/00F01C1/16F01C19/00F04C18/16
    • PROBLEM TO BE SOLVED: To provide a screw fluid compressor having inexpensive and space-saving shaft seal structure disposed on a discharge side of a rotor shaft. SOLUTION: The screw compressor 1 compresses target gas by screw rotors 4 stored in a rotor chamber 3 and meshed with each other. The screw compressor comprises: a non-contact seal 15 provided between the screw rotor 4 and a discharge side bearing 11 of a rotor shaft 7 of the screw rotor 4; a sleeve 18 provided between the non-contact seal 15 and the bearing 11 to be fitted on an outer circumference of the rotor shaft 7; a lip seal 16 brought into slide-contact with the outer periphery of the sleeve 18; and a communication passage 20 bringing a space 9 between the non-contact seal 15 and the lip seal 16 in communication with a low-pressure space 5 not higher than durable pressure of the lip seal 16. COPYRIGHT: (C)2008,JPO&INPIT
    • 解决方案:提供一种螺旋流体压缩机,其具有设置在转子轴的排出侧上的廉价且节省空间的轴密封结构。 解决方案:螺杆式压缩机1通过存储在转子室3中的螺杆转子4将目标气体压缩并彼此啮合。 螺杆式压缩机包括:设置在螺杆转子4和螺杆转子4的转子轴7的排出侧轴承11之间的非接触式密封件15; 设置在非接触式密封件15和轴承11之间以安装在转子轴7的外周上的套筒18; 唇形密封件16与套筒18的外周滑动接触; 以及连通通道20,其使得非接触式密封件15和唇形密封件16之间的空间9与不高于唇形密封件16的耐久压力的低压空间5连通。版权所有(C)2008 ,JPO&INPIT