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公开(公告)号：US09611804B2
公开(公告)日：2017-04-04
申请号：US14415194
申请日：2013-07-18
Applicant: MAHLE International GmbH
Inventor： Sascha-Oliver Boczek , Ulrich Bischofberger , Rainer Scharp
CPC classification number: F02F3/0092 , B23P15/10 , F02F3/003 , F02F3/18 , F02F2003/0061 , F05C2201/0448 , Y10T29/49252
Abstract: 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.
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公开(公告)号：US09518531B2
公开(公告)日：2016-12-13
申请号：US14363494
申请日：2012-11-06
Applicant: Volker Gniesmer , Emmerich Ottliczky , Gunter Bayer
Inventor： Volker Gniesmer , Emmerich Ottliczky , Gunter Bayer
CPC classification number: F02F3/003 , B23P15/10 , F02B3/06 , F02F3/00 , F02F3/16 , F02F3/22 , F02F2003/0061 , F02F2200/04 , F05C2201/021 , F05C2201/0448 , Y10T29/49275
Abstract: A piston of an internal combustion engine, includes a piston upper part and a piston lower part which are supported via corresponding joining webs, in each case forming a joining zone connected in a material-to-material manner by means of a multi-orbital rotary friction weld. The joining webs and which are in each case directly connected have a wall thickness S1, S2 which is identical as far as possible. The piston encloses a combustion-chamber recess and at least one cooling duct which are made centrally or eccentrically in the piston. The combustion chamber recess and the cooling duct form a circular contour or a contour which deviates from a circular shape.
Abstract translation: 内燃机的活塞包括活塞上部和活塞下部，该活塞上部和活塞下部通过相应的连接腹板支撑，在每种情况下，通过多轨道旋转形成以物料对材料方式连接的接合区域 摩擦焊接。 连接腹板并且在每种情况下直接连接具有尽可能相同的壁厚S1，S2。 活塞包围燃烧室凹部和至少一个在活塞中央或偏心地制成的冷却管道。 燃烧室凹部和冷却管道形成偏离圆形的圆形轮廓或轮廓。
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公开(公告)号：US20160273535A1
公开(公告)日：2016-09-22
申请号：US15144491
申请日：2016-05-02
Applicant: Saudi Arabian Oil Company
Inventor： Chidirim Enoch Ejim , Rafael Adolfo Lastra Melo , Jinjiang Xiao
CPC classification number: F04C13/008 , E21B43/121 , F04C2/084 , F04C2/102 , F04C11/003 , F04C14/24 , F04C15/0092 , F04C15/0096 , F04C2240/54 , F04C2250/20 , F05C2201/021 , F05C2201/0448 , F05C2225/02
Abstract: One example of a gerotor pump includes an inner rotor comprising multiple teeth, the inner rotor configured to rotate about a first longitudinal gerotor pump axis. The gerotor pump also includes a hollow outer rotor including an outer surface and an inner surface having substantially identical contours, the inner surface configured to engage with the multiple teeth and to rotate about a second longitudinal gerotor pump axis. The pump includes a pump housing within which the inner rotor and the outer rotor are disposed, wherein the outer surface of the outer rotor defines gaps between the pump housing and the outer rotor.
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公开(公告)号：US20160273534A1
公开(公告)日：2016-09-22
申请号：US15070477
申请日：2016-03-15
Applicant: Saudi Arabian Oil Company
Inventor： Rafael Adolfo Lastra Melo , Jinjiang Xiao
CPC classification number: F04C13/008 , E21B43/121 , F04C2/084 , F04C2/102 , F04C11/003 , F04C14/24 , F04C15/0092 , F04C15/0096 , F04C2240/54 , F04C2250/20 , F05C2201/021 , F05C2201/0448 , F05C2225/02
Abstract: One example of a gerotor pump includes an inner rotor comprising multiple teeth, the inner rotor configured to rotate about a first longitudinal gerotor pump axis. The gerotor pump also includes a hollow outer rotor including an outer surface and an inner surface having substantially identical contours, the inner surface configured to engage with the multiple teeth and to rotate about a second longitudinal gerotor pump axis. The pump includes a pump housing within which the inner rotor and the outer rotor are disposed, wherein the outer surface of the outer rotor defines gaps between the pump housing and the outer rotor.
Abstract translation: 齿轮泵的一个示例包括包括多个齿的内转子，内转子构造成绕第一纵向摆线泵轴线旋转。 齿轮泵还包括中空外转子，其包括外表面和具有基本相同轮廓的内表面，内表面构造成与多个齿接合并围绕第二纵向齿轮泵轴线旋转。 泵包括泵壳体，内部转子和外部转子设置在其中，外部转子的外表面限定了泵壳体和外部转子之间的间隙。
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公开(公告)号：US20160138593A1
公开(公告)日：2016-05-19
申请号：US14898042
申请日：2014-01-29
Applicant: FUJITSU GENERAL LIMITED
Inventor： Junya TANAKA , Kenji KOMINE
IPC: F04C18/356 , F04C29/12
CPC classification number: F04C18/3564 , C23C8/04 , C23C8/26 , C23C28/044 , C23C28/046 , F01C21/0809 , F04C23/001 , F04C23/008 , F04C29/12 , F04C2230/91 , F04C2230/92 , F05C2201/0406 , F05C2201/0409 , F05C2201/0439 , F05C2201/0448 , F05C2201/046 , F05C2201/0466 , F05C2203/0808 , F05C2203/083 , F05C2203/0882 , F05C2253/12
Abstract: A rotary compressor includes a compressing unit including: an annular cylinder; an end plate having a bearing unit, and closing an end portion of the cylinder; an annular piston fitted in a rotation shaft in the bearing unit, performing an orbital motion inside the cylinder, and forming an operation chamber with the cylinder inner wall; and a vane protruding from a groove of the cylinder to the operation chamber, coming into contact with the annular piston, and partitioning the operation chamber into an inlet chamber and a compression chamber. The vane is formed of steel and has a diamond-like carbon layer on a sliding surface with respect to the annular piston. The annular piston is formed of Ni—Cr—Mo cast iron to which 0.15 wt % to 0.45 wt % of phosphorus is added, or formed of cast iron or steel, and has an iron nitride layer on its outer circumferential surface.
Abstract translation: 旋转式压缩机包括：压缩单元，包括：环形气缸; 端板，其具有轴承单元，并且封闭所述气缸的端部; 安装在所述轴承单元中的旋转轴中的环形活塞，在所述气缸内部进行轨道运动，并且与所述气缸内壁形成操作室; 以及从所述气缸的槽突出到所述操作室的叶片，与所述环形活塞接触，并将所述操作室分隔成入口室和压缩室。 叶片由钢形成，并且在相对于环形活塞的滑动表面上具有类金刚石碳层。 环形活塞由添加了0.15重量％至0.45重量％的磷或由铸铁或钢制成的Ni-Cr-Mo铸铁形成，并且在其外圆周表面上具有氮化铁层。
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Patent Agency Ranking
公开(公告)号：US20160138520A1
公开(公告)日：2016-05-19
申请号：US14546674
申请日：2014-11-18
Applicant: Caterpillar Inc.
Inventor： James A. Subatch, Jr. , Matthew I. Rowan , Scott P. Coulier , Ashutosh Katari , Nikhil O. Lulla , James C. Weber , Steven C. Zoz
CPC classification number: F02F3/28 , F02B3/06 , F02B23/06 , F02B23/0621 , F02B23/0696 , F02B23/101 , F02F3/00 , F02F3/0015 , F02F3/22 , F05C2201/021 , F05C2201/0448 , Y02T10/125
Abstract: A piston for an internal combustion engine includes a piston body forming a crown portion and a skirt portion. The skirt portion includes a bore that receives a pin for connecting the piston to a connecting rod, and the crown portion forms a bowl surrounded by a flat crown surface having an annular shape and disposed along a plane. The bowl and the flat crown surface meet along a circular edge surrounding a rim of the bowl. The piston further includes an annular protrusion disposed within the bowl adjacent the rim. The annular protrusion has a generally convex shape in cross section created by an upper, inwardly extending surface and a lower, inwardly extending surface that meet along a convex apex. The piston further includes an airfoil surface formed in the flat crown surface. The airfoil surface has a convex shape and extends annularly around the rim of the bowl.
Abstract translation: 用于内燃机的活塞包括形成冠部和裙部的活塞体。 裙部包括容纳用于将活塞连接到连接杆的销的孔，并且冠部形成由具有环形形状并且沿着平面设置的平坦冠状表面包围的碗。 碗和平冠表面围绕碗的边缘周围的圆形边缘相交。 活塞还包括邻近边缘设置在碗内的环形突起。 环形突起具有由上部向内延伸的表面和沿着凸起顶点相交的下部向内延伸的表面形成的横截面的大致凸形形状。 活塞还包括形成在平坦冠面中的翼型面。 翼型表面具有凸形并围绕碗的边缘环形地延伸。
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公开(公告)号：US09279499B2
公开(公告)日：2016-03-08
申请号：US14377311
申请日：2013-02-08
Applicant: MAHLE International GmbH
Inventor： Wolfgang Issler , Daniel Lopez , Jose Valentim Lima Sarabanda
CPC classification number: F16J9/12 , F02B3/06 , F02F3/00 , F02F3/22 , F05C2201/021 , F05C2201/0448 , F16J9/14
Abstract: The invention relates to a piston ring (10, 110, 210, 310, 410, 510, 610) for pistons of internal combustion engines, having a ring running surface (14), a ring back (11), an upper ring flank (12), a lower ring flank (13), and two ring joint ends spaced apart by a gap (15). According to the invention, at least one opening (17, 121, 217, 223, 325, 407) is provided in the ring running surface (14), which opening forms a fluid connection between the ring running surface (14) and the ring back (11) or a ring flank (12, 13).
Abstract translation: 本发明涉及一种用于内燃机活塞的活塞环（10,110,210,310,410,510,610），其具有环形运行表面（14），环形背面（11），上环形侧面 12），下环面（13）和由间隙（15）间隔开的两个环形接头端部。 根据本发明，至少一个开口（17,121,217,223,325,407）设置在环行进表面（14）中，该开口在环行进表面（14）和环之间形成流体连接 后部（11）或环形侧面（12,13）。
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公开(公告)号：US20150198112A1
公开(公告)日：2015-07-16
申请号：US14579325
申请日：2014-12-22
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Toshiyuki FUNAHASHI , Takashi IDE , Toshiro FUSHIMI
IPC: F02F3/00
CPC classification number: F02F3/0069 , F02B3/06 , F02F3/00 , F02F3/0076 , F02F3/02 , F02F3/22 , F05C2201/021 , F05C2201/0448
Abstract: A piston of an internal combustion engine includes a crown portion; a pair of thrust-side and counter-thrust-side skirt portions; and a pair of apron portions connecting the thrust-side skirt portion with the counter-thrust-side skirt portion. Each of the pair of apron portions includes an upper end wall connected with the crown portion, and a pin boss portion supporting a piston pin. A reverse-surface-side portion of the crown portion is formed with a hollow portion extending along an outer surface of the upper end wall of the apron portion. The upper end wall of the apron portion includes a bending portion between an outside surface of the pin boss portion and a circumferential end of the skirt portion. The bending portion bends in a step-like manner from the outside surface of the pin boss portion toward the circumferential end of the skirt portion.
Abstract translation: 内燃机的活塞包括冠部; 一对推力侧和反推力侧裙部; 以及连接推力侧裙部与反推力侧裙部的一对围裙部。 一对挡板部分中的每一个包括与冠部连接的上端壁和支撑活塞销的销毂部。 冠部的反面侧部形成有沿着裙环部的上端壁的外表面延伸的中空部。 围裙部分的上端壁包括在凸台部分的外表面和裙部之间的周向端部之间的弯曲部分。 弯曲部从台阶部的外表面向裙部的周向端部呈阶梯状地弯曲。
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公开(公告)号：US20150136063A1
公开(公告)日：2015-05-21
申请号：US14383901
申请日：2013-03-06
Applicant: Mahle International GmbH
Inventor： Manfred Hein
IPC: F16J1/16
CPC classification number: F16J1/16 , F02B3/06 , F02F3/00 , F02F3/22 , F05C2201/021 , F05C2201/0448 , Y10T403/25
Abstract: A piston pin for connecting a small connecting rod eye of a connecting rod with a piston of an internal combustion engine may include an inner bore with an eccentricity relative to an outer surface of the piston pin. The eccentricity may amount to a maximum of 0.5 mm. The outer surface may include spiral-shaped lubricating grooves.
Abstract translation: 用于将连杆的小连杆眼与内燃机的活塞连接的活塞销可包括相对于活塞销的外表面偏心的内孔。 偏心度最大可达0.5mm。 外表面可以包括螺旋状的润滑槽。
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公开(公告)号：US20150128892A1
公开(公告)日：2015-05-14
申请号：US14398784
申请日：2013-05-03
Applicant: MAHLE International GmbH
Inventor： Ulrich Bischofberger
CPC classification number: F02F3/20 , F01P3/10 , F02B3/06 , F02F3/00 , F02F3/18 , F02F3/22 , F02F3/26 , F05C2201/021 , F05C2201/0448
Abstract: The invention relates to a piston for an internal combustion engine, comprising a piston head and a piston skirt, the piston head having a peripheral annular part and in the region of the annular part, a peripheral cooling channel. The piston skirt comprises piston bores provided with hub bores, which are arranged over the hub connections on the underside of the piston head. The piston hubs are interconnected over the running surfaces. According to the invention, the wall of the cooling channel which extends in the region of the annular part comprises an inclined portion and together with the central axis of the piston (M), forms an acute angle (a). At least one bore which is closed towards the outside is arranged between a running surface and a hub bore such that the at least one bore leads into the cooling channel, and that the cooling channel and the at least one bore contain a coolant in the form of a metal or a metal alloy which have a low-melting point.
Abstract translation: 本发明涉及一种用于内燃机的活塞，其包括活塞头和活塞裙，所述活塞头具有外围环形部分，并且在所述环形部分的区域中是周边冷却通道。 活塞裙部包括设置有轮毂孔的活塞孔，其布置在活塞头的下侧上的轮毂连接件的上方。 活塞毂在运行表面上相互连接。 根据本发明，在环形部分的区域中延伸的冷却通道的壁包括倾斜部分并与活塞（M）的中心轴线一起形成锐角（a）。 至少一个朝向外部封闭的孔布置在运行表面和轮毂孔之间，使得至少一个孔进入冷却通道，并且冷却通道和至少一个孔包含形式的冷却剂 具有低熔点的金属或金属合金。
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