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    • 6. 发明申请
    • PISTON FOR INTERNAL COMBUSTION ENGINE
    • 内燃机活塞
    • WO02031336A1
    • 2002-04-18
    • PCT/GB2001/004467
    • 2001-10-08
    • F02F3/00F16J1/00F16J1/02F16J1/04F16J1/16
    • F02F3/00F02F2200/04F05C2201/021F05C2251/042F16J1/001F16J1/02F16J1/04
    • An engine piston (10) has a crown portion (12) generated about a longitudinal piston axis (14) and, extending axially from the crown, a pair of gudgeon pin bosses (26, 28) defining a pin axis (30) and spaced apart at opposite sides of an orthogonal thrust axis (40). A circumferentially discontinuous skirt defines lateral thrust and non-thrust bearing regions (34, 36), respectively, centered on the thrust axis, each joined by convexly bowed reinforcement ribs (62, 64, 66, 68) to the bosses. The bearing region (36) on the nun-thrust side of the piston is circumferentially shorter than thrust region (34), reducing piston mass to one side of the piston, and the reinforcement ribs are offset in pin axis direction where thy intersect the bosses. Mass reducing recesses (106, 108) are formed in the underside of the crown between the unskirted periphery (37), reinforcement ribs and bosses, the offset ribs (66, 68) permitting the recesses to extend further as at (110) and permit greater reduction in mass. The asymmetry of mass reduction permits bosses and pin axis to be offset towards the thrust region (34) whilst having the centre of mass of the piston acting through or near the pin axis.
    • 发动机活塞(10)具有围绕纵向活塞轴线(14)产生并且从冠部轴向延伸的冠部(12),一对限定销轴线(30)的舵头销凸起(26,28) 在正交推力轴线(40)的相对侧分开。 圆周不连续的裙部分别分别以推力轴线为中心的侧向推力轴承区域和非止推轴承区域(34,36),每个轴承区域由凸起的加强肋(62,64,66,68)连接到凸台。 活塞的推力侧上的轴承区域(36)周向地比推力区域(34)短,从而将活塞质量减小到活塞的一侧,并且加强筋在销轴线方向偏移 。 减重凹槽(106,108)形成在未固定的周边(37),加强肋和凸台之间的冠部的下侧,允许凹部在(110)处进一步延伸的偏移肋(66,68)并允许 更大的质量减少。 质量减小的不对称允许凸台和销轴线朝向推力区域(34)偏移,同时使活塞的质心通过或靠近销轴线。
    • 7. 发明申请
    • COLD-FORMED PISTON FOR HYDRAULICALLY OPERATED BRAKE
    • 用于液压操作制动器的冷却活塞
    • WO1991012445A1
    • 1991-08-22
    • PCT/EP1990001959
    • 1990-11-16
    • ALFRED TEVES GMBHWEILER, Rolf
    • ALFRED TEVES GMBH
    • F16J01/00
    • B21H7/182B23P15/10F16D2125/06F16J1/001Y10T29/49249Y10T29/49265
    • The side walls of cold-formed pistons for hydraulically operated brakes can be distorted if the forces acting on the piston head are large enough, the piston wall flexing outwards or inwards. The invention describes a piston (1), designed to overcome this disadvantage, in which the side wall (5) is reinforced by forming a groove (3) in the wall. Working the region of the wall which is to incorporate the groove is carried out in such a way that the wall thickness (a) within the critical region (2) is not less than the wall thickness of the unworked part of the side wall (4). In a further development of the invention, it is proposed that use is made of the reinforcement groove to accommodate or hold in place a sealing sleeve, rubber sealing ring and/or retention spring for brake shoes.
    • 如果作用在活塞头上的力足够大,活塞壁向外或向内弯曲,则用于液压操作制动器的冷成型活塞的侧壁可能会变形。 本发明描述了一种旨在克服这个缺点的活塞(1),其中通过在壁中形成凹槽(3)来增强侧壁(5)。 以使得临界区域(2)内的壁厚(a)不小于侧壁(4)的未加工部分的壁厚度的方式进行将要结合凹槽的壁的区域的工作 )。 在本发明的进一步发展中,提出使用加强槽来容纳或保持用于制动蹄的密封套,橡胶密封环和/或固定弹簧。
    • 9. 发明申请
    • PISTON ASSEMBLY
    • 活塞装配
    • WO2013160649A3
    • 2013-12-19
    • PCT/GB2013050396
    • 2013-02-19
    • ISENTROPIC LTD
    • HOWES JONATHAN SEBASTIAN
    • F16J1/00F04B3/00F04B53/14F04B53/16F16J10/02F25B1/02
    • F16J1/00F04B53/14F04B53/143F04B53/162F16J1/001F16J10/02F16J15/16
    • A piston assembly (12) comprising a reciprocating sleeve (14) incorporating an integral internal piston surface (28), which sleeve is slidably mounted upon a cylinder head (18) so as to define a piston chamber (26) therewith, the piston chamber being sealed in the vicinity of the cylinder head (18) by a circumferential static seal (20) that acts to seal against the reciprocating sleeve (14). The static seal (20) may occupy a horizontal plane and may include sacrificial wear zones and be formed from a graphite-based material. The piston assembly may be an oversquare assembly for use in an oil-free environment for processing high temperature gases, for example, a hot gas engine or heat pump or heat engine such as may be used in an energy storage system.
    • 一种活塞组件(12),包括结合有一体内部活塞表面(28)的往复式套筒(14),所述套筒可滑动地安装在气缸盖(18)上以便限定活塞室(26),活塞室 通过用于密封往复式套筒(14)的周向静密封(20)密封在气缸盖(18)附近。 静态密封件(20)可以占据水平面并且可以包括牺牲耐磨区域并且由石墨基材料形成。 活塞组件可以是用于在无油环境中用于处理高温气体的过方形组件,例如可用于能量存储系统中的热气发动机或热泵或热机。