公开(公告)号：US08181623B2

公开(公告)日：2012-05-22

申请号：US13134480

申请日：2011-06-08

Applicant: Peter Kemnitz ,  Klaus Keller

Inventor： Peter Kemnitz ,  Klaus Keller

IPC: F16J1/08

CPC classification number: F16J1/16 ,  F02F3/00 ,  F05C2251/14 ,  F05C2253/20 ,  F16C33/201 ,  Y10T29/49249

Abstract: A piston for an internal combustion engine has at least two hub bores for holding a piston pin. The hub bores are formed with a cylindrical inner contour and are provided with a coating comprising a resin with solid lubricant particles embedded therein. The coating forms at least one geometric deviation from the cylindrical inner contour of the hub bores. A method for producing a piston of the type, includes producing bores with a cylindrical inner contour and applying a coating medium comprising a resin with solid lubricant particles embedded therein to the inner faces of the bores by a coating tool, such that the resulting coating forms at least one geometric deviation from the cylindrical inner contour of the hub bores.

Abstract translation: 用于内燃机的活塞具有至少两个用于保持活塞销的轮毂孔。 轮毂孔形成有圆柱形内轮廓，并且设置有包括固体润滑剂颗粒嵌入其中的树脂的涂层。 涂层与轮毂孔的圆柱形内轮廓形成至少一个几何偏差。 一种用于生产这种类型的活塞的方法包括制造具有圆柱形内轮廓的孔，并通过涂覆工具将包含固体润滑剂颗粒的树脂涂覆在孔的内表面上的涂层介质，使得所得到的涂层形成 与轮毂孔的圆柱形内轮廓的至少一个几何偏差。

公开(公告)号：US20080011262A1

公开(公告)日：2008-01-17

申请号：US11629969

申请日：2005-06-17

Applicant: Rainer Scharp ,  Peter Kemnitz

Inventor： Rainer Scharp ,  Peter Kemnitz

IPC: F02F3/00

CPC classification number: F02F3/0023 ,  F16B5/0275 ,  F16B33/02

Abstract: The invention relates to an assembled piston (1) for an internal combustion engine, said piston consisting of an upper part (4) and a lower part (5) that are interconnected by means of an internal hexagon screw (6) consisting of an upper half (37) and lower half (38). The upper half (37) of the internal hexagon screw (6) comprises an external thread (39) which is parallel to the external thread (40) of the lower screw half (38) and has a larger lead angle than the same (40). The lead angle resulting from the difference between the lead angles of the two external threads (39, 40) is very small and contributes to a high strength of the screw connection.

Abstract translation: 本发明涉及一种用于内燃机的组装的活塞（1），所述活塞由上部（4）和下部（5）组成，所述上部（4）和下部（5）通过内六角螺钉（6）相互连接， 一半（37）和下半部（38）。 内六角螺丝（6）的上半部（37）包括与下螺钉半部（38）的外螺纹（40）平行的外螺纹（39），并且具有比同一螺纹 ）。 由两个外螺纹（39,40）的引导角之间的差引起的引导角非常小，并且有助于螺钉连接的高强度。

公开(公告)号：US06763758B2

公开(公告)日：2004-07-20

申请号：US10246135

申请日：2002-09-18

Applicant: Peter Kemnitz ,  Dieter Messmer

Inventor： Peter Kemnitz ,  Dieter Messmer

IPC: F01B3108

CPC classification number: F02F3/0023 ,  F02F3/22

Abstract: A multi-part cooled piston for an internal combustion engine comprises a one-piece piston upper part having a combustion bowl and an annular wall with a piston-ring part, and a one-piece piston lower part having a box-like piston skirt, and bosses to receive the piston pins joining the piston to the connecting rod and boss supports, which are joined to the piston skirt. A cooling channel is formed through the piston upper part and also the piston lower part and is limited thereby in its cross section. A reduction of the compression height and an increase of the heat load can be achieved with this piston despite increasing engine power. The piston can also be assembled without microstructural change. The piston upper part and the piston lower part are provided with support elements having seating faces, which form a first and a second seat. The support element comprising the first seat is provided with threads for screwing the two piston parts together, and in the screwed together condition of the piston upper part and piston lower part, the two piston parts are braced exclusively via the first and second seats.

Abstract translation: 用于内燃机的多部件冷却活塞包括一体式活塞上部，其具有燃烧碗和具有活塞环部分的环形壁，以及具有盒状活塞裙的一体活塞下部， 以及凸台以接收将活塞连接到连接到活塞裙部的连杆和凸台支撑件的活塞销。 通过活塞上部和活塞下部形成冷却通道，并在其横截面上受到限制。 即使增加发动机功率，也可以利用该活塞来实现压缩高度的降低和热负荷的增加。 活塞也可以在没有微结构变化的情况下组装。 活塞上部和活塞下部设置有具有座面的支撑元件，其形成第一座椅和第二座椅。 包括第一座椅的支撑元件设置有用于将两个活塞部件拧在一起的螺纹，并且在活塞上部和活塞下部的螺纹连接状态下，两个活塞部件仅经由第一和第二座部被支撑。

公开(公告)号：US06722263B2

公开(公告)日：2004-04-20

申请号：US10149800

申请日：2002-06-14

Applicant: Klaus Keller ,  Peter Kemnitz ,  Roland Lochmann

Inventor： Klaus Keller ,  Peter Kemnitz ,  Roland Lochmann

IPC: F01B3108

CPC classification number: F02F3/22 ,  Y10S285/921

Abstract: The aim of the invention is to provide an easy fastening of a tubular supply or a vertical pipe in a bottom covering of a cooling chamber for pistons of internal combustion engines, e.g. in a circular covering of a cooling channel of an articulated-skirt piston. To this end, the vertical tube or the tubular supply is clipped into the bottom covering or is fastened thereto by a detent connection.

Abstract translation: 本发明的目的是提供一种用于内燃机活塞的冷却室的底部覆盖物中的管状供应源或垂直管的容易的紧固。 在铰接裙状活塞的冷却通道的圆形覆盖物中。 为此，垂直管或管状供应件被夹紧到底部覆盖物中或通过制动连接件固定到其上。

公开(公告)号：US06698392B1

公开(公告)日：2004-03-02

申请号：US10270256

申请日：2002-10-11

Applicant: Hans-Jürgen Köhnert ,  Peter Kemnitz

Inventor： Hans-Jürgen Köhnert ,  Peter Kemnitz

IPC: F02F322

CPC classification number: F02F3/225 ,  F05C2201/0448

Abstract: A single-part cooling channel piston for a combustion engine with a piston head of forged steel comprises a combustion bowl in the piston crown, a ring wall with ring belt and an all-round closed cooling channel level with the ring belt. The piston skirt is connected to the pin bosses attached to the piston head. Inexpensive manufacture together with improved cooling and good form stability of the piston is achieved by providing the cooling channel with holes spread over its circumference towards the piston crown and spaced such that the piston material present between such holes forms supporting ribs for the piston crown.

Abstract translation: 用于具有锻造钢的活塞头的内燃机的单件式冷却通道活塞包括在活塞冠中的燃烧碗，具有环形带的环形壁和具有环形带的全面封闭的冷却通道水平。 活塞裙部连接到附接到活塞头的销凸台。 通过为冷却通道提供在其圆周上朝向活塞顶部扩展的孔并且间隔开，使得存在于这些孔之间的活塞材料形成用于活塞顶盖的支撑肋，实现了具有改进的冷却和良好的活塞形式稳定性的廉价制造。

公开(公告)号：US06698391B1

公开(公告)日：2004-03-02

申请号：US10270255

申请日：2002-10-11

Applicant: Peter Kemnitz

Inventor： Peter Kemnitz

IPC: F02F322

CPC classification number: F02F3/22 ,  F02F3/003 ,  F02F3/0084 ,  F05C2201/0448

Abstract: A multipart cooled piston for a combustion engine comprises a piston upper part of steel comprising a combustion bowl and a ring wall with ring belt, and a piston lower part comprising a box-shaped piston skirt, pin bosses for receiving the piston pin connecting the piston to the connecting rod, and pin boss supports connected to the piston skirt, an inexpensive manufacture with high form stability and improved cooling system is to be achieved in that a cooling channel formed in the piston upper part has holes spread over its circumference towards the piston crown, with the piston material present between such holes forming supporting ribs that each form sections of an all-round ring rib radially to the longitudinal piston axis (K), in that the piston lower part has an annular and all-round carrier rib connected to the pin boss supports, and in that the piston upper part and the piston lower part are non-detachably connected by means of the ring rib and the carrier rib.

Abstract translation: 用于燃烧发动机的多部分冷却活塞包括钢的活塞上部，其包括燃烧碗和具有环形带的环形壁，以及包括箱形活塞裙部的活塞下部，用于接收连接活塞的活塞销的销凸起 连接杆和连接到活塞裙部的销凸台支撑件，可以实现具有高形状稳定性和改进的冷却系统的廉价制造，其中形成在活塞上部的冷却通道具有在其圆周上朝向活塞扩展的孔 其中活塞材料存在于这些孔之间，形成支撑肋，每个肋形成径向与纵向活塞轴线（K）的全面环形肋的部分，因为活塞下部具有连接的环形和全方位的承载肋 并且活塞上部和活塞下部通过环形肋和承载肋不可拆卸地连接。

公开(公告)号：US5261363A

公开(公告)日：1993-11-16

申请号：US028257

申请日：1993-03-09

Applicant: Peter Kemnitz

Inventor： Peter Kemnitz

IPC: F02F3/00 ,  F02F3/22

CPC classification number: F02F3/22 ,  F02F3/0015 ,  F02F2003/0061 ,  Y10T29/49256

Abstract: The invention relates to a piston for an internal combustion engine. The piston has a longitudinally extending axis and ring grooves for receiving piston rings, and a separate piston head having a top and an annular cooling oil duct. A ring belt extends downwardly from the top of the piston head to define an outer border of the annular cooling oil duct and forms a first support facing in an axial direction. Bosses define an inner border of the annular cooling oil duct and form a second support facing in an opposite axial direction. The cooling oil duct has an opening and an annular plate supported on the first and second supports by spring tension. The annular plate closes the opening of the annular cooling oil duct to retain oil therein to cool the piston.

Abstract translation: 本发明涉及一种用于内燃机的活塞。 活塞具有纵向延伸的轴线和用于接收活塞环的环形槽，以及具有顶部和环形冷却油导管的单独的活塞头。 环形带从活塞头的顶部向下延伸以限定环形冷却油管道的外边界并形成面向轴向方向的第一支撑件。 凸台限定环形冷却油管道的内边界并形成面向相反轴向方向的第二支撑件。 冷却油导管具有开口和通过弹簧张力支撑在第一和第二支撑件上的环形板。 环形板关闭环形冷却油管道的开口，以保持其中的油以冷却活塞。

公开(公告)号：US5113817A

公开(公告)日：1992-05-19

申请号：US694413

申请日：1991-05-01

Applicant: Peter Kemnitz ,  Michael Ullrich ,  Hanspeter Wieland

Inventor： Peter Kemnitz ,  Michael Ullrich ,  Hanspeter Wieland

IPC: F02B23/06 ,  F02F3/00 ,  F02F3/22

CPC classification number: F02F3/22 ,  F02B23/0696 ,  F02F3/0069 ,  F05C2201/0448 ,  Y02T10/125

Abstract: A piston for an internal combustion engine with a separate head and skirt which are joined by a piston pin. The ring belt extends downward from head and terminates above the pin. The space between the lower edge of the ring belt and a section of the head defines a cooling oil ring space. A depression is formed in the head and is partly defined by the section. The second land has the largest diameter and exclusively guides the piston. The height of the second land is in the range of three to seven percent of the piston diameter. The diametrical second land clearance is 1.5% to 2.5%. The diametrical third land clearance is one percent of the piston diameter. The diametrical top land clearance is in the range of 1.5 mm to 2.0 mm.

Abstract translation: 一种用于内燃机的活塞，其具有由活塞销连接的单独头部和裙部。 环带从头部向下延伸并终止在销的上方。 环带的下边缘和头部的一部分之间的空间限定了冷却油环空间。 在头部形成凹陷，并且部分地由该部分限定。 第二块土地具有最大的直径并专门引导活塞。 第二块土地的高度在活塞直径的三到七％的范围内。 直径第二次陆上清关为1.5％至2.5％。 直径第三陆面间隙是活塞直径的百分之一。 直径的顶面间隙在1.5mm至2.0mm的范围内。