LASER WELDED PISTON ASSEMBLY; METHODS OF ASSEMBLING AND JOINING SUCH PISTON
    1.
    发明申请
    LASER WELDED PISTON ASSEMBLY; METHODS OF ASSEMBLING AND JOINING SUCH PISTON 审中-公开
    激光焊接活塞组件; 组装和接合这种活塞的方法

    公开(公告)号:WO2013044015A1

    公开(公告)日:2013-03-28

    申请号:PCT/US2012/056550

    申请日:2012-09-21

    摘要: An exemplary piston includes a piston body (102) having radially inner and outer body mating surfaces. The piston further includes a cooling gallery ring (104) cooperating with the piston body (102) to form a continuous upper combustion bowl surface and a cooling gallery. The cooling gallery ring (104) has radially inner and outer ring mating surfaces abutted along their corresponding radially inner and outer body mating surfaces, such that the cooling gallery is substantially enclosed. The piston body (102) and cooling gallery ring (104) is joined together along the radially inner and radially outer interface regions to form a generally one- piece piston assembly. The radially outer interface region may be elongated in a direction parallel to the piston axis, is facilitating a laser welding joining process.

    摘要翻译: 示例性活塞包括具有径向内部和外部主体配合表面的活塞体(102)。 活塞还包括与活塞主体(102)协作以形成连续的上燃烧碗表面和冷却槽的冷却槽环(104)。 冷却库环(104)具有沿其相应的径向内部和外部主体配合表面邻接的径向内部和外部环配合表面,使得冷却库基本封闭。 活塞主体(102)和冷却槽环(104)沿着径向内部和径向外部界面区域连接在一起以形成大体上一体式的活塞组件。 径向外界面区域可以在平行于活塞轴线的方向上伸长,有利于激光焊接接合过程。

    PISTONS WITH A ROUGH SURFACE
    2.
    发明申请
    PISTONS WITH A ROUGH SURFACE 审中-公开
    活泼的表面

    公开(公告)号:WO2011035919A1

    公开(公告)日:2011-03-31

    申请号:PCT/EP2010/005846

    申请日:2010-09-24

    IPC分类号: F02F3/00

    摘要: A piston for an internal combustion engine including a piston crown having an upper surface and a lower surface; a piston skirt; and a generally cup-shaped undercrown formed on the lower surface of the piston crown and integral with the top portions of opposing side walls of the piston skirt, at least a portion of the surface of the undercrown being rough, defining at least one region of increased surface area, wherein the distance between an uppermost and lowermost points of the surface of the undercrown in the at least one region of increased surface area is in the range of approximately 0.1mm to 1.0mm.

    摘要翻译: 一种用于内燃机的活塞,其包括具有上表面和下表面的活塞冠; 活塞裙; 以及形成在活塞顶部的下表面上并且与活塞裙部的相对侧壁的顶部成一体的大致杯形的底下,内底下表面的至少一部分是粗糙的,限定至少一个区域 增加的表面积,其中在增加的表面积的至少一个区域中底下的表面的最上面和最下点之间的距离在大约0.1mm至1.0mm的范围内。

    PISTON ASSEMBLY
    4.
    发明申请
    PISTON ASSEMBLY 审中-公开
    活塞组件

    公开(公告)号:WO2012045445A1

    公开(公告)日:2012-04-12

    申请号:PCT/EP2011/004956

    申请日:2011-10-05

    IPC分类号: F02F3/22 F02F3/00

    摘要: Exemplary piston assemblies and methods of making the same are disclosed. An exemplary piston assembly may include a piston crown and a piston skirt that is received in a central opening of the crown. The piston crown may include a ring belt portion defining, at least in part, a cooling gallery. The crown and skirt may each further include corresponding mating surfaces that extend about a periphery of the crown and skirt. The skirt mating surface and crown mating surface may generally be secured to each other that the crown and the skirt cooperate to form a continuous upper combustion bowl surface. The skirt and crown may cooperate to define a radially outer gap about a periphery of the piston crown.

    摘要翻译: 公开了示例性活塞组件及其制造方法。 示例性的活塞组件可以包括容纳在冠的中心开口中的活塞冠和活塞裙部。 活塞顶部可以包括至少部分地限定冷却库的环形带部分。 冠部和裙部可以各自进一步包括围绕冠部和裙部的周边延伸的对应的配合表面。 裙部配合表面和冠部配合表面通常可以彼此固定,使得冠部和裙部配合以形成连续的上部燃烧碗表面。 裙部和冠部可以协作以限定围绕活塞冠的周边的径向外部间隙。

    PISTON FOR AN INTERNAL COMBUSTION ENGINE
    5.
    发明申请
    PISTON FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
    内燃机活塞

    公开(公告)号:WO2013062955A1

    公开(公告)日:2013-05-02

    申请号:PCT/US2012/061461

    申请日:2012-10-23

    IPC分类号: F02F3/00 F02F3/22

    摘要: Exemplary pistons are disclosed, e.g., for an internal combustion engine. An exemplary piston includes a lower part and an upper part, whereby the lower part and the upper part define a circumferential closed cooling gallery. The cooling gallery may be provided with a gallery bottom. The piston may further include a circumferential bar positioned on the gallery bottom, the circumferential bar defining at least one coolant inlet and at least one coolant outlet extending through the bar.

    摘要翻译: 公开了示例性的活塞,例如用于内燃机。 示例性活塞包括下部和上部,由此下部和上部限定周向封闭的冷却廊。 冷却库可以设置有画廊底部。 该活塞还可以包括一个定位在工作台底部的圆周杆,圆周杆限定至少一个冷却剂入口和至少一个延伸穿过该杆的冷却剂出口。