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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.

    COOLING CHANNEL COVER AND PISTON PROVIDED WITH A COOLING CHANNEL COVER
    5.
    发明申请
    COOLING CHANNEL COVER AND PISTON PROVIDED WITH A COOLING CHANNEL COVER 有权

    公开(公告)号：US20170314505A1

    公开(公告)日：2017-11-02

    申请号：US15523286

    申请日：2015-10-27

    申请人： Mahle International GmbH

    发明人： Sascha-Oliver Boczek ,  Rainer Scharp ,  Timo Linke

    IPC分类号： F02F3/22

    CPC分类号： F02F3/22

    摘要： An annular cooling channel cover for a piston may include an elastic material body having opposing end faces. At least two opposing end regions may provide a joint gap and at least one feed element for a coolant may be received in at least one opening disposed in the cooling channel cover. The feed element may include an inlet region and an outlet region, and may be held on the cooling channel cover via a clip-on latching connection. Spring clips may be disposed on the inlet region of the feed element, and/or latching elements may be disposed on the outlet region of the feed element. The spring clips may engage one of the end faces and the latching elements may engage the opposing end face. A closure element may engage into the joint gap to close the same.

    Cooling channel cover and piston provided with a cooling channel cover
    7.
    发明授权
    Cooling channel cover and piston provided with a cooling channel cover 有权

    公开(公告)号：US10240557B2

    公开(公告)日：2019-03-26

    申请号：US15523210

    申请日：2015-10-27

    申请人： Mahle International GmbH

    发明人： Sascha-Oliver Boczek ,  Timo Linke ,  Rainer Scharp

    IPC分类号： F02F3/10 ,  F02F3/22 ,  F02F3/24

    摘要： A cooling channel cover for a piston of an internal combustion engine may include a body having mutually opposite end faces. At least one supply element for a coolant may be received in an opening disposed in the cooling channel cover. The supply element may include an inlet region and an outlet region, and may be held on the cooling channel cover via a clipped-in latching connection. A spring tab may be disposed on the inlet region of the supply element, and/or a latching element may be disposed on the outlet region of the supply element. The spring clip may engage one of the end faces and the latching element may engage the opposite end face.

    Method for producing a piston
    9.
    发明授权
    Method for producing a piston 有权

    公开(公告)号：US09611804B2

    公开(公告)日：2017-04-04

    申请号：US14415194

    申请日：2013-07-18

    申请人： MAHLE International GmbH

    发明人： Sascha-Oliver Boczek ,  Ulrich Bischofberger ,  Rainer Scharp

    IPC分类号： F02F3/00 ,  B23P15/10 ,  F02F3/18

    CPC分类号： F02F3/0092 ,  B23P15/10 ,  F02F3/003 ,  F02F3/18 ,  F02F2003/0061 ,  F05C2201/0448 ,  Y10T29/49252

    摘要： The invention relates to a method for producing a piston (1) for an internal combustion engine, characterized by the following method steps: producing an upper piston part (2) and a lower piston part (3) having one or more recesses (4, 4′) for forming a closed cavity (5); introducing a heat transfer medium (6), in particular one or more alkali metals, that is solid or paste-like at ambient temperature and liquid at the intended operating temperature of the piston, into the recesses (4, 4′) of the lower piston part (3) and/or of the upper piston part (2), wherein the heat transfer medium (6) is provided in order, during the operative state of the piston (1), to effect heat transport within the piston (1) by convection; closing the recesses to form the closed cavity (5) which encloses the heat transfer medium (6); and connecting the upper piston part (2) to the lower piston part (3). This enables the piston (1) to be produced in a simplified manner.