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    REDUCED COMPRESSION HEIGHT DUAL GALLERY PISTON, PISTON ASSEMBLY THEREWITH AND METHODS OF CONSTRUCTION THEREOF
    3.
    发明公开
    REDUCED COMPRESSION HEIGHT DUAL GALLERY PISTON, PISTON ASSEMBLY THEREWITH AND METHODS OF CONSTRUCTION THEREOF 审中-公开
    减小压缩高度的双面活塞，活塞组件及其构造方法

    公开(公告)号：EP3240950A1

    公开(公告)日：2017-11-08

    申请号：EP15828457.0

    申请日：2015-12-30

    申请人： Federal-Mogul LLC

    发明人： AZEVEDO, Miguel ,  WEINENGER, Michael

    IPC分类号： F02F3/22 ,  F16J1/09 ,  F16J1/14 ,  F02F3/00 ,  F02F3/18

    摘要： A piston assembly, piston therefor and methods of construction are provided. The assembly includes a piston head and connecting rod operably coupled thereto via a wrist pin. The piston head has an upper crown with a combustion bowl and an undercrown surface. The lower crown includes axially aligned pin bores receiving the wrist pin. An upper wall of the lower crown has an oil inlet, an oil outlet and a concave, saddle bearing surface that bears against the wrist pin. A toroid-shaped outer cooling gallery is formed between wall portions of the upper and lower crowns, wherein the outer cooling gallery surrounds an inner cooling gallery. The connecting rod is fixed to the wrist pin for conjoint oscillation. The connecting rod has an oil passage in fluid communication with a through hole in the wrist pin to allow oil to flow therethrough into the inner cooling gallery via the oil inlet.

    REDUCED COMPRESSION HEIGHT PISTON AND PISTON ASSEMBLY THEREWITH AND METHODS OF CONSTRUCTION THEREOF
    5.
    发明授权
    REDUCED COMPRESSION HEIGHT PISTON AND PISTON ASSEMBLY THEREWITH AND METHODS OF CONSTRUCTION THEREOF 有权

    公开(公告)号：EP2900993B1

    公开(公告)日：2018-07-25

    申请号：EP13779962.3

    申请日：2013-09-27

    申请人： Federal-Mogul LLC

    发明人： AZEVEDO, Miguel ,  WEINENGER, Michael

    IPC分类号： F02F3/00 ,  F16J1/16 ,  F16C7/00 ,  F16C9/04

    CPC分类号： B23P15/08 ,  F02F3/00 ,  F02F3/0069 ,  F02F3/16 ,  F02F2200/00 ,  F16J1/005 ,  F16J1/09 ,  F16J1/16 ,  F16J7/00 ,  Y10T29/49249 ,  Y10T29/49268

    摘要： A piston assembly for an internal combustion engine, comprises: a piston head having an upper combustion wall with an undercrown surface and a ring belt region depending from said upper combustion wall, a floor having an upper surface and a bottom surface, said floor being spaced beneath said upper combustion wall in radial alignment with said ring belt region, a substantially enclosed, annular cooling gallery bounded by said undercrown surface and said floor, said cooling gallery extending radially inwardly from said ring belt region; a pair of pin bores depending directly from the floor of the cooling gallery; a pin having ends configured for oscillating receipt in the pin bores; a pin bearing surface extending within said pin bores and between said pin bores in said lower surface of said floor; a connecting rod having an end fixed to the pin for conjoint oscillation therewith; and a plurality of support members extending radially outwardly from a central longitudinal axis of said piston head, said support members extending between said undercrown surface and said upper surface of said floor.

    PISTON WITH COOLING GALLERY HAVING ENHANCED OIL INLET AND METHOD OF CONSTRUCTION THEREOF
    6.
    发明公开
    PISTON WITH COOLING GALLERY HAVING ENHANCED OIL INLET AND METHOD OF CONSTRUCTION THEREOF 审中-公开
    具有增强油进口的冷却库的活塞及其构造方法

    公开(公告)号：EP3234330A1

    公开(公告)日：2017-10-25

    申请号：EP15821243.1

    申请日：2015-12-18

    申请人： Federal-Mogul LLC

    发明人： WEINENGER, Michael

    IPC分类号： F02F3/22 ,  B21J5/06 ,  F01P3/10

    CPC分类号： F02F3/22 ,  B23P15/10 ,  F02F2003/0061

    摘要： A piston and method of construction thereof are provided. The piston includes an upper crown having an upper combustion surface and a lower crown depending therefrom. The lower crown includes a pair of laterally spaced, axially aligned pin bores configured for receipt of a wrist pin. A substantially closed, annular outer cooling gallery is formed between the upper and lower crowns, wherein a bottom surface of the cooling gallery is formed by a floor of the lower crown. An oil inlet and an oil outlet extend through the floor. The oil inlet includes an upstanding toroid-shaped protrusion that extends upwardly from the floor into the cooling gallery, wherein the protrusion is formed as a monolithic extrusion from the material of the lower crown floor.

    摘要翻译： 提供了一种活塞及其构造方法。 活塞包括具有上部燃烧表面和从其上垂下的下部冠部的上部冠部。 下冠部包括一对侧向间隔开的，轴向对齐的销孔，该销孔被构造成用于接收腕销。 在上冠和下冠之间形成基本封闭的环形外冷却通道，其中冷却通道的底面由下冠的底部形成。 进油口和出油口贯穿地面。 进油口包括从地板向上延伸到冷却油道中的直立环形突起，其中突起形成为与下冠顶地板的材料整体式挤压成形。

    MONOLITHIC, GALLERYLESS PISTON AND METHOD OF CONSTRUCTION THEREOF
    9.
    发明公开
    MONOLITHIC, GALLERYLESS PISTON AND METHOD OF CONSTRUCTION THEREOF 审中-公开

    公开(公告)号：EP3400381A1

    公开(公告)日：2018-11-14

    申请号：EP17701366.1

    申请日：2017-01-04

    申请人： Federal-Mogul LLC

    发明人： RIFFE, Jeff ,  WEINENGER, Michael

    IPC分类号： F02F3/20 ,  F02B23/06

    CPC分类号： F02F3/20

    摘要： A galleryless steell piston for an internal combustion engine is provided. The piston has a monolithic piston body including an upper wall forming an upper combustion surface with first and second portions. The first portion extends annularly along an outer periphery of the upper wall and the second portion defines a combustion bowl. The piston further includes undercrovvn surface located directly opposite the combustion bowl with an exposed 2-dimensional surface area allowing for contact of cooling oil. The exposed 2-dimensional surface area ranges from 25 to 60 percent of a cross-sectional area defined by a maximum outer diameter of the piston body. To further enhance cooling, a portion of the undercrown surface is concave or convex, such that oil is channeled during reciprocation of the piston from one side to the opposite side of the piston.