公开(公告)号：US20090056534A1

公开(公告)日：2009-03-05

申请号：US12225569

申请日：2007-03-23

Applicant: Rainer Scharp

Inventor： Rainer Scharp

IPC: F02F3/00

CPC classification number: F02F3/0076

Abstract: The invention relates to a piston (10, 110, 210, 310) for an internal combustion engine, comprising a piston head (11, 111, 211, 311) and a piston shaft (16, 116, 216, 316). The invention is characterized in that on the internal wall (22, 122, 222, 322) of the piston shaft (16, 116, 216, 316) at least one reinforcing rib (25, 125, 225, 325) is provided that extends in parallel to the piston center axis (A).

Abstract translation: 本发明涉及一种用于内燃机的活塞（10,110,210,310），其包括活塞头（11,111,211,311）和活塞轴（16,116,216,316）。 本发明的特征在于，在活塞轴（16,116,216,316）的内壁（22,122,222,322）上提供至少一个加强肋（25,125,225,325），其延伸 平行于活塞中心轴线（A）。

公开(公告)号：US07464684B2

公开(公告)日：2008-12-16

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 a 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）和一半（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：US07387100B2

公开(公告)日：2008-06-17

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: F02F3/00

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。

公开(公告)号：US07302927B1

公开(公告)日：2007-12-04

申请号：US11451258

申请日：2006-06-12

Applicant: Rainer Scharp

Inventor： Rainer Scharp

IPC: F02F31/00

CPC classification number: F02F3/22 ,  F02F3/0023

Abstract: Proposed is a two-part piston 1 for an internal combustion engine, having an upper part 2 that has a pin 31 having an outside thread 32 on the underside of its piston crown 4, and having a lower part 3, which is connected with the upper part 2 by means of a nut 29 screwed onto the pin 31. The lower part 3 has an elastically resilient upper base part 25, onto which an expansion sleeve 26, elastic in the axial direction, is formed, which has an opening 27 having a collar 28, which is directed radially inward, into which the pin 31 is introduced. An elastic compression sleeve 30 is formed onto the nut 29, which sleeve rests against the collar 28. In this connection, the elastic resilience of the base part 25, the expansion sleeve 26, the compression sleeve 30, the pin 31, and the piston crown 4 has the result that the screw connection has a flat characteristic line despite a low compression height of the piston 1, thereby imparting great strength to the screw connection.

公开(公告)号：US20070137605A1

公开(公告)日：2007-06-21

申请号：US11451258

申请日：2006-06-12

Applicant: Rainer Scharp

Inventor： Rainer Scharp

IPC: F02F3/00 ,  F01P1/04

CPC classification number: F02F3/22 ,  F02F3/0023

Abstract: Proposed is a two-part piston 1 for an internal combustion engine, having an upper part 2 that has a pin 31 having an outside thread 32 on the underside of its piston crown 4, and having a lower part 3, which is connected with the upper part 2 by means of a nut 29 screwed onto the pin 31. The lower part 3 has an elastically resilient upper base part 25, onto which an expansion sleeve 26, elastic in the axial direction, is formed, which has an opening 27 having a collar 28, which is directed radially inward, into which the pin 31 is introduced. An elastic compression sleeve 30 is formed onto the nut 29, which sleeve rests against the collar 28. In this connection, the elastic resilience of the base part 25, the expansion sleeve 26, the compression sleeve 30, the pin 31, and the piston crown 4 has the result that the screw connection has a flat characteristic line despite a low compression height of the piston 1, thereby imparting great strength to the screw connection.

Abstract translation: 提出了一种用于内燃机的两部分活塞1，其具有上部2，该上部部分2具有在其活塞冠4的下侧上具有外螺纹32的销31，并且具有下部3，该下部3与 上部部分2通过拧在销31上的螺母29。 下部3具有弹性弹性的上部基部25，在其上形成有沿轴向弹性的膨胀套筒26，该膨胀套筒26具有带径向向内定向的轴环28的开口27，销31 被介绍。 弹性压缩套筒30形成在螺母29上，该套筒靠在套环28上。 在这方面，基部25，膨胀套筒26，压缩套筒30，销31和活塞顶部4的弹性回弹性的结果是螺纹连接具有平坦的特性线，尽管压缩高度 活塞1，从而对螺钉连接赋予很大的强度。

公开(公告)号：US06772846B1

公开(公告)日：2004-08-10

申请号：US10384008

申请日：2003-03-07

Applicant: Rainer Scharp

Inventor： Rainer Scharp

IPC: F02F322

CPC classification number: B23B35/00 ,  F02F3/22 ,  Y10T29/49265 ,  Y10T29/49996

Abstract: A method for drilling shaker bores into a cooling channel of a single-part piston, in which gudgeon-pin bosses each having a gudgeon-pin bore and piston shaft elements are molded onto the piston head via a tie-up substantially extending fully around in the form of a ring. Passage bores are drilled into the tie-up coaxially with the shaker bores to be drilled into the cooling channel, and the shaker bore is drilled into the underside of the piston head with a drilling bit inserted in the respective passage bore.

Abstract translation: 一种将振动筛孔钻入单件活塞的冷却通道中的方法，其中每个具有舵头孔和活塞轴元件的舵头销凸起通过基本上完全延伸的结合模制在活塞头上 戒指的形式。 将通道孔与与待钻入冷却通道的振动器孔同轴地钻入，并且将钻孔钻入插入到相应通道孔中的钻头钻入活塞头的下侧。

公开(公告)号：US08631781B2

公开(公告)日：2014-01-21

申请号：US13199449

申请日：2011-08-30

Applicant: Sascha-Oliver Boczek ,  Rainer Scharp

Inventor： Sascha-Oliver Boczek ,  Rainer Scharp

IPC: F02F3/22

CPC classification number: F02F3/0076 ,  F02F3/22

Abstract: A piston for an internal combustion engine has an upper piston part and a lower piston part, which form an outer circumferential cooling channel. The piston has pin boss connections that lie opposite one another, at which pin bosses are provided, which have pin bores that define a center axis (M). The upper piston part and the lower piston part are connected with one another by way of outer joining surfaces and inner joining surfaces. A bridge that runs essentially parallel to the center axis (M) is configured in the lower piston part, in the region of the pin boss connections. The bridge has two longitudinal sides that delimit an upper bridge surface.

Abstract translation: 内燃机的活塞具有形成外周冷却通道的上活塞部和下活塞部。 活塞具有彼此相对设置的销凸台连接，在该凸台连接处设置有销凸起，其具有限定中心轴线（M）的销孔。 上活塞部和下活塞部通过外接合面和内接合面彼此连接。 基本上平行于中心轴线（M）延伸的桥梁被构造在下部活塞部分中，在凸台连接的区域中。 桥梁有两个纵向边界限定上桥面。

公开(公告)号：US08550052B2

公开(公告)日：2013-10-08

申请号：US13205988

申请日：2011-08-09

Applicant: Klaus Keller ,  Michael Ullrich ,  Rainer Scharp

Inventor： Klaus Keller ,  Michael Ullrich ,  Rainer Scharp

IPC: F02F3/16

CPC classification number: F02F3/22 ,  F02F3/003

Abstract: A piston for an internal combustion engine has an upper part and a lower part. The upper part has a collar with a ring rib and the lower part has a wall and a contact part radially within the wall. When the upper part is connected with the lower part by friction welding, the face surfaces of the ring rib, the collar, the wall, and the contact part form friction-welding surfaces and form a cooling channel and a cooling cavity between them. To supply the cooling channel and the cooling cavity with cooling oil, radial bores are introduced into the ring rib, which bores connect the cooling channel with the cooling cavity. In this way, it is guaranteed that a sufficient residual amount of oil collects in the cooling channel and in the cooling cavity, which amount is constantly renewed, and leads to good cooling of the piston crown.

Abstract translation: 内燃机的活塞具有上部和下部。 上部具有带有环形肋的套环，下部具有壁和径向在壁内的接触部分。 当上部通过摩擦焊接与下部连接时，环形肋，轴环，壁和接触部分的表面形成摩擦焊接表面，并在它们之间形成冷却通道和冷却腔。 为了通过冷却油供应冷却通道和冷却腔，径向孔被引入到环形肋中，该孔将冷却通道与冷却腔连接。 以这种方式，可以确保在冷却通道和冷却腔中充分剩余的油量聚集在该冷却槽中，该量不断更新，并且导致活塞冠的良好冷却。

公开(公告)号：US20130008404A1

公开(公告)日：2013-01-10

申请号：US13199449

申请日：2011-08-30

Applicant: Sascha-Oliver Boczek ,  Rainer Scharp

Inventor： Sascha-Oliver Boczek ,  Rainer Scharp

IPC: F02F3/00

CPC classification number: F02F3/0076 ,  F02F3/22

Abstract: A piston for an internal combustion engine has an upper piston part and a lower piston part, which form an outer circumferential cooling channel. The piston has pin boss connections that lie opposite one another, at which pin bosses are provided, which have pin bores that define a center axis (M). The upper piston part and the lower piston part are connected with one another by way of outer joining surfaces and inner joining surfaces. A bridge that runs essentially parallel to the center axis (M) is configured in the lower piston part, in the region of the pin boss connections. The bridge has two longitudinal sides that delimit an upper bridge surface.

Abstract translation: 内燃机的活塞具有形成外周冷却通道的上活塞部和下活塞部。 活塞具有彼此相对设置的销凸台连接，在该凸台连接处设置有销凸起，其具有限定中心轴线（M）的销孔。 上活塞部和下活塞部通过外接合面和内接合面彼此连接。 基本上平行于中心轴线（M）延伸的桥梁被构造在下部活塞部分中，在凸台连接的区域中。 桥梁有两个纵向边界限定上桥面。

公开(公告)号：US20120222644A1

公开(公告)日：2012-09-06

申请号：US13066560

申请日：2011-04-18

Applicant: Karlheinz Bing ,  Michael T. Lapp ,  Rainer Scharp ,  Michael Ullrich

Inventor： Karlheinz Bing ,  Michael T. Lapp ,  Rainer Scharp ,  Michael Ullrich

IPC: F02F3/16 ,  B23P15/10 ,  F02F3/26

CPC classification number: F02F3/00 ,  B23K26/28 ,  B23K2101/003 ,  B23P15/10 ,  F02F3/003 ,  F02F3/22 ,  F02F2200/00 ,  Y10T29/49249 ,  Y10T29/49252

Abstract: A piston for an internal combustion engine has a piston head, a piston skirt, and a circumferential recess configured between the piston head and the piston skirt. The piston has a piston base body and a piston ring element. The piston base body has a crown region of a combustion bowl and the piston skirt. The piston ring element has a piston crown, a wall region of the combustion bowl, a circumferential top land, and a circumferential ring belt with ring grooves. The piston ring element has a circumferential cooling channel between the wall region of the combustion bowl and the ring belt, closed with a closure element. The piston base body and the piston ring element have a circumferential joining seam in the region of the combustion bowl, by way of which seam they are non-releasably connected with one another.

Abstract translation: 用于内燃机的活塞具有活塞头，活塞裙和构造在活塞头和活塞裙之间的周向凹部。 活塞具有活塞基体和活塞环元件。 活塞基体具有燃烧碗的顶部区域和活塞裙部。 活塞环元件具有活塞冠，燃烧碗的壁区域，周向顶部平台和具有环形凹槽的圆周环形带。 活塞环元件在燃烧碗的壁区域和环形带之间具有周边冷却通道，用闭合元件封闭。 活塞基体和活塞环元件在燃烧碗的区域中具有周向接合缝，通过它们不可释放地彼此连接。