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    • 32. 发明授权
    • MONOBLOC PISTON
    • MONOBLOC活塞
    • EP1438485B9
    • 2010-12-22
    • EP02784182.4
    • 2002-10-21
    • FEDERAL-MOGUL CORPORATION
    • GAISER, RandallZHU, XiluoNIGRO, Roberto, Bueno
    • F01B31/08F16J1/04F02F3/00
    • F02F3/00F01M2001/083F02F3/22F02F2003/0007
    • A monobloc piston has at least two steel parts (13, 15) welded together to define an inner cooling gallery (32). An outer ring belt (14) is spaced from an inner annular support wall (34) and is joined by a combustion bowl (28) and a lower wall. A pair of pin bosses (38) have axially aligned pin bores (44). A skirt (46) is formed as one immovable piece with the pin bores. The piston has the following dimensional relationships: ISMD = 42-55% of BD, where ISMD is a mean diameter on the inner support wall and BD is an outer diameter of the ring belt wall, ISW = 3-8% of BD, where ISW is a sectional width of inner wall; CH > 53% of BD where CH is a compression height measured between the pin bore axis and the upper surface, TLH > 4% of BD, where TLH is a top land height measured between the top of the upper ring groove and the upper surface, SL = 30-80% of BD, where SL is a length of the skirt measured between the upper and lower ends of the skirt, SW = 2.5 - 6.5% of BD, where SW is a thickness of the skirt, and GV = 150-250% of BD2 and 5-20% of BD2 x CH, where GV is a volume of the oil gallery.
    • 单体活塞具有至少两个焊接在一起以限定内冷却通道(32)的钢部件(13,15)。 外环带(14)与内环形支撑壁(34)间隔开并由燃烧碗(28)和下壁连接。 一对销毂(38)具有轴向对齐的销孔(44)。 裙部(46)形成为具有销孔的一个不可移动件。 活塞具有以下尺寸关系:ISMD = BD的42-55%,其中ISMD是内支撑壁上的平均直径,BD是环形带壁的外径,ISW = BD的3-8%,其中 ISW是内壁的截面宽度; CH> 53%BD,其中CH是在销孔轴线和上表面之间测量的压缩高度,TLH> BD的4%,其中TLH是在上环槽的顶部与上表面之间测量的顶部平台高度 ,SL = 30-80%的BD,其中SL是在裙部的上端和下端之间测量的裙部的长度,SW = BD的2.5-6.5%,其中SW是裙部的厚度,并且GV = BD2的150-250%和BD2×CH的5-20%,其中GV是油库的体积。
    • 34. 发明公开
    • Piston
    • 科尔本
    • EP2096337A1
    • 2009-09-02
    • EP09162350.4
    • 2006-11-02
    • DRESSER, INC.
    • Donahue, Richard J.
    • F16J1/04F02F3/02
    • F16J1/04F02F3/02F02F3/022
    • The invention relates to an internal combustion engine, comprising at least one wall (210) defining a bore (205); and a piston (300) disposed in the bore (205) and coupled to a piston rod (102) to pivot about a pivot axis (305), the piston comprising a substantially circumferential outer surface having a head-portion (310) and a skirt profile line (320) below the head portion (310), at least a portion of the outer surface bearing against the wall (210) in a thrust plane when the piston (300) is substantially at operating temperature and subject to a thrust force (T), the portion of the thrust force (T) borne by the skirt profile line (320) in the thrust plane is definable by a skirt force centroid (R 1 ), the skirt force centroid (R 1 ) being positioned at an axial height at or below the pivot axis (305), wherein the head portion (310) of the outer surface has radii that are larger than at least some of the radii of the skirt profile line (320) of the outer surface when the piston is substantially at operating temperature.
    • 本发明涉及一种内燃机,其包括限定孔(205)的至少一个壁(210); 以及设置在孔(205)中并且联接到活塞杆(102)以围绕枢转轴线(520)枢转的活塞(300),所述活塞包括基本上圆周的外表面,其具有头部(310)和 在顶部部分(310)下方的裙部轮廓线(320),当活塞(300)基本处于工作温度并承受推力时,外表面的至少一部分在推力平面中抵靠壁(210) (T)中,推力平面中由裙型轮廓线(320)承载的推力(T)的部分可由裙部力矩(R 1)定义,裙部力矩(R 1)位于 在所述枢转轴线(305)处或下方的轴向高度,其中所述外表面的头部(310)具有比所述外表面的裙部轮廓线(320)的半径中的至少一些半径大的半径,当所述活塞 基本处于工作温度。