公开(公告)号：US20120000439A1

公开(公告)日：2012-01-05

申请号：US13135134

申请日：2011-06-27

Applicant: Rainer Scharp ,  Sascha-Oliver Boczek

Inventor： Rainer Scharp ,  Sascha-Oliver Boczek

IPC: F02F3/16

CPC classification number: F02F3/22 ,  F02F3/003

Abstract: A piston for an internal combustion engine has an upper and a lower piston part. The upper piston part has a cooling cavity on its underside, and the lower piston part has a ceiling element with a cover hood, which closes off the cooling cavity. The cover hood is securely attached on the ceiling element if the central part of the cover element has an oil drain opening, the top of which is formed as a neck, the upper edge of which neck has a circumferential bead having an underside configured as a circumferential undercut, and if the cover hood has a centrally located opening, the edge of which has slits that are distributed over the circumference and lie radially. The cover hood is attached on the neck so that the sheet-metal tabs are snapped in below the undercut, between the slits, and form a secure snap-in connection with the neck.

Abstract translation: 内燃机的活塞具有上活塞部和下活塞部。 上活塞部件在其下侧具有冷却腔，下活塞部件具有顶盖元件，盖帽罩封闭冷却腔。 如果盖元件的中心部分具有排油口，其顶部形成为颈部，则盖罩被牢固地附接在天花板上，其顶部的上边缘具有下侧的周向胎圈，所述下边缘被构造为 并且如果盖罩具有位于中心的开口，其边缘具有分布在圆周上并且径向放置的狭缝。 覆盖罩附接在颈部上，使得金属薄片卡扣在切口下方的切口之间，并与颈部形成牢固的卡扣连接。

公开(公告)号：US07946216B2

公开(公告)日：2011-05-24

申请号：US11792659

申请日：2005-11-28

Applicant: Rainer Scharp ,  Bernd Mahr

Inventor： Rainer Scharp ,  Bernd Mahr

IPC: F16J1/00

CPC classification number: F02F3/0015 ,  F02F3/003 ,  F16J1/005

Abstract: The invention relates to a two-piece piston (1) for an internal combustion engine, comprising a piston upper piece (2) and a piston lower piece (2). A cylindrical molding (24) is arranged on the underside of the piston upper piece (2), facing away from the piston crown, lying coaxial to the piston axis (15), with two radial outward-facing hooked projections (27) on the end thereof facing away from the piston crown. The piston lower piece (6) has an opening (16) on the piston crown side, in which the cylindrical molding (24) with the projections (27) is introduced and rotated on assembly of the piston upper piece (2) on the piston lower piece (6), such that the projections (27) engage behind the edge of the opening (16).

Abstract translation: 本发明涉及一种用于内燃机的两件式活塞（1），其包括活塞上部件（2）和活塞下部件（2）。 活塞上部件（2）的下侧布置有圆柱形模制件（24），其背离与活塞轴线（15）同轴的活塞顶盖，在其上具有两个径向向外的钩形突起（27） 其端部远离活塞冠。 活塞下部件（6）在活塞顶侧具有开口（16），其中具有突起（27）的圆柱形模制件（24）在活塞上部件（2）组装在活塞上时被引入并转动 下部件（6），使得突起（27）接合在开口（16）的边缘后面。

公开(公告)号：US07743745B2

公开(公告)日：2010-06-29

申请号：US11791777

申请日：2005-11-28

Applicant: Rainer Scharp

Inventor： Rainer Scharp

IPC: F02F3/18

CPC classification number: F02F3/22 ,  F02F3/0023

Abstract: Disclosed is a multipart, cooled piston for a combustion engine, comprising, in a radially outward direction, an annular cooling duct located on the bottom side that faces away from the piston head. The cooling duct is closed by a cooling duct cover which is embodied as a ring. The cooling duct cover is provided with a tongue in the radially inner zone. The tongue engages into a recess that is molded into the bottom piston part, thus preventing the cooling duct cover from rotating relative to the piston during assembly as well as during operation.

Abstract translation: 公开了一种用于内燃机的多部分冷却活塞，其包括在径向向外的方向上的位于底面上的背离活塞头的环形冷却管道。 冷却管道通过体现为环的冷却管道盖封闭。 冷却管道盖在径向内部区域中设置有舌部。 舌部接合到模制到底部活塞部分中的凹部中，从而防止冷却管道盖在组装期间以及在操作期间相对于活塞旋转。

公开(公告)号：US20100108000A1

公开(公告)日：2010-05-06

申请号：US12587960

申请日：2009-10-15

Applicant: Rainer Scharp ,  Klaus Keller ,  Volker Weisse

Inventor： Rainer Scharp ,  Klaus Keller ,  Volker Weisse

IPC: F01P1/04 ,  F02F3/00

CPC classification number: F02F3/003 ,  B23P15/10 ,  F02F3/22 ,  F02F2003/0061 ,  Y10T29/49252

Abstract: A multi-part piston for an internal combustion engine has an upper piston part having a piston crown, and a lower piston part. The lower piston part has pin boss supports and pin bosses connected with them and the upper piston part and the lower piston part each have an inner and an outer support element, which elements delimit an outer circumferential cooling channel. The inner support elements delimit a cavity that is open toward the pin bosses. The cavity has a separate cooling oil collector that has at least one cooling oil opening. The piston is produced by manufacturing the upper piston part and lower piston part, inserting the cooling oil collector into the upper piston part or lower piston part, and joining the upper and lower piston parts together by friction welding.

Abstract translation: 用于内燃机的多部件活塞具有具有活塞顶部的上活塞部件和下活塞部件。 下活塞部分具有销凸台支撑件和与其连接的销凸台，并且上活塞部分和下活塞部件各自具有内支撑元件和外支撑元件，该元件限定外周冷却通道。 内部支撑元件限定朝向销凸起敞开的空腔。 空腔具有独立的冷却油收集器，其具有至少一个冷却油开口。 活塞通过制造上活塞部和下活塞部，通过将冷却油收集器插入上活塞部或下活塞部，通过摩擦焊接将上下活塞部接合在一起而制造。

公开(公告)号：US20090250033A1

公开(公告)日：2009-10-08

申请号：US10574750

申请日：2004-10-04

Applicant: Rainer Scharp

Inventor： Rainer Scharp

IPC: F02F3/00 ,  F01B31/08

CPC classification number: F02F3/22

Abstract: The invention relates to a piston for an internal combustion engine comprising an annular cooling channel embodied in the edge area of the piston head and closed on a rod side with a cover consisting of two semicircular half-shells which are oriented with the internal sides thereof towards the piston and provided with a circular groove for arranging the half-shells on a projection embodied on the external side of the piston. The half-shells are provided on the abutting surfaces thereof with rest connections for easily connecting the half-shells to each other.

Abstract translation: 本发明涉及一种用于内燃机的活塞，其包括在活塞头的边缘区域中实施的环形冷却通道，并且在杆侧封闭，盖子由两个半圆形半壳组成，两个半圆形半壳的内侧朝向 活塞并设置有用于将半壳布置在体积在活塞的外侧上的突起上的圆形槽。 半壳在其邻接表面上设置有用于容易地将半壳彼此连接的静止连接。

公开(公告)号：US07584694B2

公开(公告)日：2009-09-08

申请号：US11630218

申请日：2005-06-20

Applicant: Rainer Scharp

Inventor： Rainer Scharp

IPC: F16J1/04 ,  F01B31/08

CPC classification number: F02F3/0023 ,  F02F3/22

Abstract: The invention relates to an assembled piston (1) for an internal combustion engine, said piston consisting of an upper part (4) provided with a combustion cavity (8), and a lower part (5) that is screwed to the upper part (4) by means of a screw (6) which is arranged coaxially to the piston axis (31). Said screw (6) is embodied as a set screw comprising a hexagon socket (6′) on the inner side of the piston and a head (6″) on the bottom side of the piston, the head (6″) forming part of the bottom of the combustion cavity (8) and being flush therewith (8) in the screwed state.

Abstract translation: 本发明涉及一种用于内燃机的组装活塞（1），所述活塞由设置有燃烧腔（8）的上部（4）和与上部螺纹连接的下部（5）组成 4）通过与活塞轴线（31）同轴布置的螺钉（6）。 所述螺杆（6）被实施为固定螺钉，其包括在活塞的内侧上的六角形插槽（6'）和位于活塞的底侧的头部（6“），所述头部（6”）形成 在燃烧腔（8）的底部的一部分并且与螺旋状态的（8）齐平。

公开(公告)号：US07415959B2

公开(公告)日：2008-08-26

申请号：US11578876

申请日：2005-04-19

Applicant: Rainer Scharp

Inventor： Rainer Scharp

IPC: F01P1/04

CPC classification number: F02F3/22

Abstract: The invention relates to a cooling channel covering for a piston of an internal combustion engine in the form of a spring metal sheet which is measured in such a manner that wear and tear in the region of the surface is prevented, in such a manner that a peripheral gap is produced between the radial, external front side of the spring metal sheet and the radial, external limit of the step-shaped recess.

Abstract translation: 本发明涉及一种用于弹簧金属片形式的内燃机活塞的冷却通道盖，该弹簧金属片的形式是以这样一种方式测量的，即，防止表面区域的磨损和磨损， 在弹簧金属片的径向外侧前侧和阶梯状凹部的径向外部极限之间产生周向间隙。

公开(公告)号：US20080060514A1

公开(公告)日：2008-03-13

申请号：US11630218

申请日：2005-06-20

Applicant: Rainer Scharp

Inventor： Rainer Scharp

IPC: F16J1/01

CPC classification number: F02F3/0023 ,  F02F3/22

Abstract: The invention relates to an assembled piston (1) for an internal combustion engine, said piston consisting of an upper part (4) provided with a combustion cavity (8), and a lower part (5) that is screwed to the upper part (4) by means of a screw (6) which is arranged coaxially to the piston axis (31). Said screw (6) is embodied as a set screw comprising a hexagon socket (6′) on the inner side of the piston and a head (6″) on the bottom side of the piston, the head (6″) forming part of the bottom of the combustion cavity (8) and being flush therewith (8) in the screwed state.

Abstract translation: 本发明涉及一种用于内燃机的组装活塞（1），所述活塞由设置有燃烧腔（8）的上部（4）和与上部螺纹连接的下部（5）组成 4）通过与活塞轴线（31）同轴布置的螺钉（6）。 所述螺杆（6）被实施为固定螺钉，其包括在活塞的内侧上的六角形插槽（6'）和位于活塞的底侧的头部（6“），所述头部（6”）形成 在燃烧腔（8）的底部的一部分并且与螺旋状态的（8）齐平。

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：US20070028863A1

公开(公告)日：2007-02-08

申请号：US11485569

申请日：2006-07-12

Applicant: Rolf-Gerhard Fiedler ,  Rainer Scharp ,  Hans-Peter Wieland

Inventor： Rolf-Gerhard Fiedler ,  Rainer Scharp ,  Hans-Peter Wieland

IPC: F01P1/04

CPC classification number: F02F3/22

Abstract: A piston for an internal combustion engine has a piston head and a piston skirt spaced apart from the piston head by a ring-shaped recess. The piston has at least one pin bore for accommodating a piston pin. A ring-shaped circumferential cooling channel for a coolant is provided in the piston head, which channel is closed off by a cover ring that consists of at least two segments. At least one region of the cover ring projects at least partially into the clear opening of the at least one pin bore, in such a manner that the cover ring simultaneously forms the retaining element for the piston pin.

Abstract translation: 用于内燃机的活塞具有通过环形凹部与活塞头间隔开的活塞头和活塞裙部。 活塞具有用于容纳活塞销的至少一个销孔。 用于冷却剂的环形周向冷却通道设置在活塞头中，该通道被由至少两个段组成的盖环封闭。 盖环的至少一个区域至少部分地突出到至少一个销孔的透明开口中，使得盖环同时形成用于活塞销的保持元件。