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    Piston for an internal combustion engine
    2.
    发明授权
    Piston for an internal combustion engine 有权

    公开(公告)号：US09765728B2

    公开(公告)日：2017-09-19

    申请号：US14424706

    申请日：2013-08-27

    申请人： MAHLE International GmbH

    发明人： Ulrich Bischofberger ,  Sascha-Oliver Boczek

    IPC分类号： F02F3/22 ,  F01P3/10 ,  F02F3/18 ,  F02F3/00 ,  F01P3/00

    CPC分类号： F02F3/22 ,  F01P3/10 ,  F01P2003/006 ,  F02F3/0015 ,  F02F3/0084 ,  F02F3/18

    摘要： A piston for an internal combustion engine includes a piston head and a piston skirt, wherein the piston head has a piston base, a circumferential ring part and, in the region of the ring part, a circumferential closed cooling channel or sealed cavity. An inner side of the piston has two lower surfaces which transform continuously in the region of the piston central axis (M) to form an arched surface. The piston skirt has piston hubs provided with hub bores which are interconnected by means of running surfaces which have inner surfaces facing the inside of the piston. Starting from the free ends of the piston skirt, inside the piston on the pressure side (DS) and/or counter pressure side (GDS), an inner surface of a running surface continuously transforms into a guiding surface for a coolant which transforms continuously on the side thereof into a lower surface.

    Piston for an internal combustion engine
    3.
    发明授权
    Piston for an internal combustion engine 有权

    公开(公告)号：US09726109B2

    公开(公告)日：2017-08-08

    申请号：US14395237

    申请日：2013-04-15

    申请人： Mahle International GmbH

    发明人： Sascha-Oliver Boczek

    IPC分类号： F02F3/00 ,  F02F3/20 ,  F02F3/18

    CPC分类号： F02F3/20 ,  F02F3/18

    摘要： A piston for an internal combustion engine may include an encircling ring section in a region of a piston crown. The piston may include a convection region, which has at least one cavity containing a heat transfer medium for dissipation of heat from the piston crown to an underside of the piston. The piston may include a heat insulating region, which is arranged between the ring section and the convection region and thermally insulates the ring section.

    PISTON WITH SEALED COOLING GALLERY AND METHOD OF CONSTRUCTION THEREOF
    4.
    发明申请
    PISTON WITH SEALED COOLING GALLERY AND METHOD OF CONSTRUCTION THEREOF 审中-公开
    具有密封冷却图案的活塞及其构造方法

    公开(公告)号：US20160222911A1

    公开(公告)日：2016-08-04

    申请号：US15011852

    申请日：2016-02-01

    申请人： Federal-Mogul Corporation

    发明人： Gregory Salenbien ,  Miguel Azevedo

    IPC分类号： F02F3/18 ,  F02F3/00

    CPC分类号： F02F3/18 ,  F02F3/003 ,  F02F3/16 ,  F02F2003/0061

    摘要： A piston for an internal combustion engine and method of construction thereof is provided. The piston has a piston body including an upper part and a lower part. The upper part has an upper combustion surface configured for direct exposure to combustion gases within a cylinder bore with an undercrown surface beneath the upper combustion surface. The body has a ring belt region configured for receipt of at least one piston ring adjacent the upper combustion surface with an annular cooling gallery configured radially inwardly from the ring belt region. The cooling gallery has a floor, wherein the floor has at least one through opening. A coolant medium is disposed in the cooling gallery, and a sealing member is disposed in the at least one through opening to seal off the coolant medium in the coolant gallery.

    摘要翻译： 提供了一种内燃机的活塞及其构造方法。 活塞具有包括上部和下部的活塞体。 上部具有上部燃烧表面，其构造成用于直接暴露于具有在上燃烧表面下方的底下表面的气缸孔内的燃烧气体。 主体具有环带区域，其被配置为接收与上燃烧表面相邻的至少一个活塞环，其具有从环带区域径向向内配置的环形冷却槽。 冷却库具有地板，其中地板具有至少一个通孔。 冷却剂介质设置在冷却槽中，并且密封构件设置在至少一个通孔中以密封冷却剂库中的冷却剂介质。

    PISTON WITH SUPPLEMENTAL COOLING GALLERY AND INTERNAL COMBUSTION ENGINE THEREWITH
    5.
    发明申请
    PISTON WITH SUPPLEMENTAL COOLING GALLERY AND INTERNAL COMBUSTION ENGINE THEREWITH 有权
    活塞与补充冷却画廊和内燃机发动机

    公开(公告)号：US20130206084A1

    公开(公告)日：2013-08-15

    申请号：US13370695

    申请日：2012-02-10

    申请人： Miguel Azevedo ,  Warran Boyd Lineton ,  Keith Hampton

    发明人： Miguel Azevedo ,  Warran Boyd Lineton ,  Keith Hampton

    IPC分类号： F01P3/10

    CPC分类号： F02F3/22 ,  F01P3/08 ,  F02F3/18

    摘要： An internal combustion engine and piston therefor is provided. The piston has a body including an upper combustion wall, a cylindrical outer wall including a ring belt region depending from the upper combustion wall, and a pair of pin bosses having axially aligned pin bores. The piston has a first cooling gallery in radial alignment with the ring belt region with a cooling medium contained therein. An insert member is fixed to the body in axially spaced relation beneath a lower wall of the first cooling gallery. The insert member bounds a second cooling gallery beneath the lower wall of the first cooling gallery. The insert member has an inlet opening configured to allow oil to flow into the second cooling gallery against the lower wall of the first cooling gallery and a separate outlet opening configured to allow the oil to flow outwardly from the second cooling gallery.

    摘要翻译： 提供内燃机及其活塞。 活塞具有主体，其包括上燃烧壁，包括从上燃烧壁悬垂的环带区域的圆柱形外壁和具有轴向对准销孔的一对销凸起。 活塞具有与环带区域径向对准的第一冷却库，其中包含冷却介质。 插入构件在第一冷却库的下壁下方以轴向间隔的关系固定到主体。 插入构件限定第一冷却库的下壁下方的第二冷却库。 插入构件具有入口开口，其构造成允许油流入第二冷却库中抵靠第一冷却库的下壁，并且单独的出口开口构造成允许油从第二冷却库向外流动。

    PISTON FOR AN INTERNAL COMBUSTION ENGINE
    6.
    发明申请
    PISTON FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
    内燃机活塞

    公开(公告)号：US20130047948A1

    公开(公告)日：2013-02-28

    申请号：US13238043

    申请日：2011-09-21

    申请人： Urs HEUSCHMANN

    发明人： Urs HEUSCHMANN

    IPC分类号： F02F3/00

    CPC分类号： F02F3/18 ,  F02F3/22

    摘要： A piston for an internal combustion engine has a piston crown, a circumferential ring belt, a circumferential cooling channel in the region of the ring belt, pin boss supports connected below the piston crown, and pin bosses connected with the pin boss supports, as well as a piston skirt. A cavity closed all around is provided below the piston crown and a coolant in the form of a metal or metal alloy having a low melting point is accommodated in the cavity.

    摘要翻译： 用于内燃机的活塞具有活塞冠，周向环带，环带区域中的周向冷却通道，连接在活塞顶部下方的销凸台支撑以及与销凸台支撑件连接的销凸起 作为活塞裙。 在活塞顶部下方设置有围绕的空腔，并且具有低熔点的金属或金属合金形式的冷却剂容纳在空腔中。

    Fully hydrodynamic piston ring and piston assembly with elastomerically conforming geometry and internal cooling
    8.
    发明授权
    Fully hydrodynamic piston ring and piston assembly with elastomerically conforming geometry and internal cooling 失效
    完全流体动力的活塞环和活塞组件，具有弹性符合几何和内部冷却

    公开(公告)号：US4470375A

    公开(公告)日：1984-09-11

    申请号：US502579

    申请日：1983-06-09

    申请人： Merle R. Showalter

    发明人： Merle R. Showalter

    IPC分类号： F01P3/22 ,  F02F3/18 ,  F02F5/00 ,  F16J1/04 ,  F16J1/08 ,  F16J9/00 ,  F16J9/06

    CPC分类号： F28D15/02 ,  F02F3/18 ,  F16J1/08 ,  F16J9/00 ,  F01P2003/2278 ,  F05C2225/02

    摘要： A piston ring and piston assembly designed for operation with the piston skirt fully flooded with oil and with the piston rings operating as fully hydrodynamic sliders is disclosed. Geometries of rings and piston skirt are arranged to conform elastically to the real out-of-round deformations of cylinder walls in such a fashion as to maximize the advantages of full film lubrication physics. The rings are loaded in circumferential compression and are flexible. This elastic configuration makes the rings conform instantaneously to cylinder wall out-of-round to a scale of microinches. This conformability is required to maintain oil control (zero oil pumping to the top of the cylinder wall) with fully hydrodynamic conditions between the rings and the cylinder wall. The piston has a piston skirt which is flexible enough to conform to cylinder wall out-of-round and maximize squeeze film effects. The piston skirt is arranged to superimpose squeeze film and pivoted pad slider physics. The piston is equipped with a heat piped internal heat transfer structure which maintains the piston in a near isothermal condition. The piston skirts are nearly isothermal. This controls expansion for improved hydrodynamic geometry. The great majority of heat transfer from the piston crown to the cylinder passes through the piston skirt oil film to the cylinder wall. The assembly utilizes component deformations to maximize hydrodynamic and squeeze film lubrication effects to minimize engine friction and wear.

    摘要翻译： 公开了一种活塞环和活塞组件，其设计用于使活塞裙部完全充满油并且活塞环作为完全流体动力滑块操作。 环和活塞裙的几何形状被布置成弹性地符合气缸壁的真正的不圆形变形，使得最大化全膜润滑物理学的优点。 环被加载在周向压缩中并且是柔性的。 这种弹性构造使得圆环瞬时地与圆筒壁不一致，达到微凹槽的尺度。 在环和气缸壁之间具有完全流体动力学条件的情况下，需要保持这种一致性，以保持油控制（零抽油到气缸壁顶部）。 活塞具有足够的弹性足以使圆筒壁不圆形并且最大化挤压膜效果。 活塞裙布置成叠加挤压薄膜和枢轴垫片滑块物理。 活塞配有热管内部传热结构，可将活塞保持在接近等温条件。 活塞裙几乎是等温的。 这控制了改进的流体动力学几何的扩展。 从活塞冠到气缸的大部分热传递通过活塞裙部油膜到气缸壁。 组件利用部件变形来最大限度地提高流体动力学和挤压薄膜润滑效果，以尽量减少发动机摩擦和磨损。