公开(公告)号：US08695560B2

公开(公告)日：2014-04-15

申请号：US13516473

申请日：2010-12-17

Applicant: Wolfgang Issler ,  Peter Kemnitz

Inventor： Wolfgang Issler ,  Peter Kemnitz

IPC: F02F3/00

CPC classification number: F02F3/00

Abstract: A piston for an internal combustion engine has a piston crown, a circumferential fire land, a circumferential ring part having annular grooves, and a piston skirt, which comprises two skirt walls and two box walls set back from the ring part and connecting the skirt walls in such a way that an exposed underside of the ring part is formed in the area of each of the box walls. The box walls are provided with pin bosses having pin bores. At least one support element is arranged between each exposed underside of the ring part and the box wall associated with the underside of the ring part.

Abstract translation: 一种用于内燃机的活塞具有活塞冠，周向火炬，具有环形槽的周向环部分和活塞裙部，其包括两个裙部壁和从环形部分回缩并连接裙部壁的两个箱壁 使得环形部分的暴露的下侧形成在每个盒壁的区域中。 箱壁上设置有带销孔的销钉凸起。 至少一个支撑元件布置在环部分的每个暴露的下侧和与环部分的下侧相关联的箱壁之间。

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：US20080245335A1

公开(公告)日：2008-10-09

申请号：US11821025

申请日：2007-06-21

Applicant: Peter Kemnitz ,  Alexander Grossle

Inventor： Peter Kemnitz ,  Alexander Grossle

IPC: F02F3/00

CPC classification number: F02F3/025 ,  F16J1/09

Abstract: A piston for an internal combustion engine, comprising a piston head having a piston crown, a circumferential top land, and a circumferential ring belt having ring grooves. At least one ring groove is provided with a ring insert. A circumferential depression is provided in the top land, above the ring belt.

Abstract translation: 一种用于内燃机的活塞，包括具有活塞冠，圆周顶面和具有环形凹槽的周向环带的活塞头。 至少一个环形槽设置有环形插入件。 在环形带上方的顶部区域中设置有周向凹陷。

公开(公告)号：US5081967A

公开(公告)日：1992-01-21

申请号：US694415

申请日：1991-05-01

Applicant: Peter Kemnitz ,  Emil Ripberger

Inventor： Peter Kemnitz ,  Emil Ripberger

IPC: F02B3/06 ,  F02B23/06 ,  F02F3/00 ,  F02F3/22 ,  F16J1/14

CPC classification number: F02B23/0696 ,  F02F3/0069 ,  F02F3/22 ,  F16J1/14 ,  F02B3/06 ,  F02F2200/04 ,  F05C2201/021 ,  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 the 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 section has a thickness of between four percent and seven percent of the piston diameter, corresponding to an angle of zero to sixty degrees of the section with respect to a vertical longitudinally extending line. The thickness of the head above the space is six percent to twelve percent of the piston diameter. The top of the space is below the top ring groove. Above the second ring groove, the ring belt has a thickness of greater than two and one-half percent of the piston diameter.

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。 该部分具有活塞直径的4％至7％之间的厚度，对应于该部分相对于垂直纵向延伸线的零度至60度的角度。 在空间上方的头部的厚度为活塞直径的6％至12％。 空间顶部位于顶部环槽下方。 在第二环形槽的上方，环形带的厚度大于活塞直径的2.5％。

公开(公告)号：US20080264376A1

公开(公告)日：2008-10-30

申请号：US12008747

申请日：2008-01-14

Applicant: Ralf Braig ,  Rainer Fischer ,  Peter Kemnitz ,  Peter Kleinle

Inventor： Ralf Braig ,  Rainer Fischer ,  Peter Kemnitz ,  Peter Kleinle

IPC: F02F3/00

CPC classification number: F02F3/00 ,  F02F3/027

Abstract: A piston for an internal combustion engine has a piston crown, a circumferential top land, and a circumferential ring belt having ring grooves, as well as having a piston skirt that has two skirt walls disposed on the major thrust side and the minor thrust side of the piston, and two box walls, set back with regard to the ring belt, that connect the skirt walls. The box walls have pin bosses with pin bores. The skirt wall disposed on the major thrust side is shorter, in a circumference direction of the piston, than the skirt wall disposed on the minor thrust side.

Abstract translation: 用于内燃机的活塞具有活塞冠，周向顶面和具有环形槽的周向环带，并且具有活塞裙部，其具有设置在主推力侧和短推力侧的两个裙壁 活塞和两个箱壁相对于连接裙壁的环形带回落。 箱壁有针孔，带针孔。 设置在主推力侧的裙壁在活塞的圆周方向上比设置在次推力侧的裙壁更短。

公开(公告)号：US6026777A

公开(公告)日：2000-02-22

申请号：US234750

申请日：1999-01-21

Applicant: Peter Kemnitz ,  Michael Ullrich

Inventor： Peter Kemnitz ,  Michael Ullrich

IPC: F01P3/10 ,  F02B23/06 ,  F02F3/00 ,  F02F3/22 ,  F02F3/26 ,  F16J1/01

CPC classification number: F02F3/0023 ,  F02B23/0696 ,  F02F3/22 ,  F02F2200/04 ,  F05C2201/0448 ,  Y02T10/125

Abstract: A piston with a cooling channel having a basic piston barrel made from forged steel and a box-shaped shaft, bosses and boss supports and connecting walls between the boss supports as well as a combustion trough. The piston increases the rigidity of the ring part. To accomplish this, the piston has a wall extending all around above the boss bores. A structural component is welded in between the wall and the piston head and limits the cooling channel. This design increases the rigidity of the ring part in pistons.

Abstract translation: 具有冷却通道的活塞具有由锻造钢制成的基本活塞筒和箱形轴，凸台和凸台支撑件以及凸台支撑件之间的连接壁以及燃烧槽。 活塞增加了环部的刚度。 为了实现这一点，活塞具有围绕凸起孔周围延伸的壁。 结构部件焊接在壁和活塞头之间，并限制冷却通道。 这种设计增加了活塞环部分的刚性。

公开(公告)号：US5778533A

公开(公告)日：1998-07-14

申请号：US849226

申请日：1997-05-30

Applicant: Peter Kemnitz

Inventor： Peter Kemnitz

IPC: F02F3/00 ,  B23P15/10 ,  F02F3/22 ,  F16J1/09 ,  F16J1/16

CPC classification number: B23P15/10 ,  F02F3/22 ,  F02F2200/04 ,  F05C2201/0448 ,  Y10T29/49249 ,  Y10T29/49265 ,  Y10T29/49996

Abstract: The invention concerns a method of producing a one-part piston which, in the region of the piston ring zone, has a closed cooling duct and a recess between the piston ring zone and the box-shaped piston body. The method comprises the following steps: a piston blank is produced by a forging process; the annular recess is produced by machining, the axial height of the recess corresponding at least to the axial height of the cooling duct; the cooling duct, which is open at the bottom, is produced by machining; hub bores are formed and the outer contour of the piston is finished; and the cooling duct, which is open at the bottom, is closed by a two-part cover ring.

Abstract translation: PCT No.PCT / DE95 / 01481 Sec。 371日期1997年5月30日 102（e）日期1997年5月30日PCT提交1995年10月21日PCT公布。 出版物WO96 / 20340 日期1996年7月4日本发明涉及一种制造单件活塞的方法，其在活塞环区域中具有封闭的冷却管道和活塞环区域与箱形活塞体之间的凹部。 该方法包括以下步骤：通过锻造工艺生产活塞坯料; 所述环形凹槽通过机械加工产生，所述凹部的轴向高度至少对应于所述冷却管道的轴向高度; 在底部开口的冷却管通过机械加工生产; 形成轮毂孔，活塞的外轮廓完成; 并且在底部开口的冷却管道由两部分的盖环封闭。

公开(公告)号：US08671905B2

公开(公告)日：2014-03-18

申请号：US13225663

申请日：2011-09-06

Applicant: Rainer Scharp ,  Peter Kemnitz ,  Michael Ullrich

Inventor： Rainer Scharp ,  Peter Kemnitz ,  Michael Ullrich

IPC: F02F3/00 ,  F16J1/00

CPC classification number: B23P15/10 ,  F02F3/003 ,  F02F3/22 ,  Y10T29/49254

Abstract: A piston for an internal combustion engine has a piston head that has a circumferential cooling channel as well as a combustion bowl having a circumferential bowl wall that makes a transition into a piston crown by way of a bowl edge region. The combustion bowl is formed at least in part by a piston base body and the bowl wall is formed at least in part from an insert. The insert is connected with the piston base body by means of beam welding. A lower weld seam is configured in the bowl wall, which seam encloses an acute angle with the piston center axis (M) and ends in the lower half of the cooling channel. An upper weld seam runs from the cooling channel ceiling to the piston crown and is disposed centered or radially offset toward the outside, with reference to the clear width of the cooling channel.

Abstract translation: 用于内燃机的活塞具有活塞头，该活塞头具有周向冷却通道以及具有周向碗壁的燃烧碗，所述周向碗壁通过碗边缘区域转变成活塞冠。 燃烧碗至少部分地由活塞基体形成，并且碗壁至少部分地从插入物形成。 插入件通过梁焊接与活塞基体连接。 在碗壁中配置了较低的焊缝，该接缝与活塞中心轴线（M）围成锐角，并在冷却通道的下半部结束。 上部焊缝从冷却通道天花板延伸到活塞顶部，相对于冷却通道的透明宽度，将其设置为朝向外部居中或径向偏移。

公开(公告)号：US20130008407A1

公开(公告)日：2013-01-10

申请号：US13516473

申请日：2010-12-17

Applicant: Wolfgang Issler ,  Peter Kemnitz

Inventor： Wolfgang Issler ,  Peter Kemnitz

IPC: F02F3/00

CPC classification number: F02F3/00

Abstract: The present invention relates to a piston (10) for an internal combustion engine, comprising a piston crown (13), a circumferential fire land (14), a circumferential ring part (15) having annular grooves, and a piston skirt (16), which comprises two skirt walls (17) and two box walls (18) set back from the ring part (15) and connecting the skirt walls (17) in such a way that an exposed underside (25) of the ring part (15) is formed in the area of each of the box walls (18), wherein the box walls (18) are provided with pin bosses (19) having pin bores (21). According to the invention, at least one support element (26a, 26b) is arranged between each exposed underside (25) of the ring part (15) and the box wall (18) associated with said underside of the ring part.

Abstract translation: 本发明涉及一种用于内燃机的活塞（10），包括活塞冠（13），周向火炬（14），具有环形槽的周向环部（15）和活塞裙（16） ，其包括两个裙部壁（17）和从环形部分（15）回缩的两个箱壁（18），并且以这样的方式连接裙部壁（17），使得环部分（15）的暴露的下侧（25） ）形成在每个箱壁（18）的区域中，其中箱壁（18）设置有具有销孔（21）的销凸起（19）。 根据本发明，至少一个支撑元件（26a，26b）设置在环部分（15）的每个暴露的下侧（25）和与环部分的所述下侧相关联的箱壁（18）之间。

公开(公告)号：US20100012073A1

公开(公告)日：2010-01-21

申请号：US12312619

申请日：2007-10-23

Applicant: Peter Kemnitz

Inventor： Peter Kemnitz

IPC: F02F3/00 ,  F16J1/14

CPC classification number: F16J1/16 ,  F02F3/00

Abstract: The present invention relates to a piston (10) for an internal combustion engine having a piston head (11) and a piston skirt (16) with piston hubs (17) which are each connected to a hub bore (18) for receiving a piston bolt, wherein the piston hubs (17) are in the shape of a trapezoidal or step-shaped support in which the inner faces (19) of the piston hubs (17) include an acute angle (αa) with the central axis (M) of the piston. The invention provides that each hub bore (18) is embodied as a shaped bore which is widened at least in its inner area in such a way that the widened portion increases in size in the direction of the inner end (18′) of the hub bore (18) forming facets (120, 220) on the lateral surface (18) of the hub bore (18), and that the facets (120, 220) include an acute angle (αa, β) with the central axis (M) of the piston.

Abstract translation: 本发明涉及一种用于内燃机的活塞（10），其具有活塞头（11）和具有活塞套（17）的活塞裙部（16），活塞套（17）各自连接到轮毂孔（18），用于容纳活塞 螺栓，其中活塞轮毂（17）为梯形或阶梯状支撑件的形状，活塞毂（17）的内表面（19）包括与中心轴线（M）成锐角（αa） 的活塞。 本发明提供了每个轮毂孔（18）被实施为成形孔，其至少在其内部区域中被加宽，使得加宽部分在轮毂的内端（18'）的方向上尺寸增大 孔（18）在轮毂孔（18）的侧表面（18）上形成小平面（120,220），并且小平面（120,220）包括与中心轴线（M）的锐角（αa，β） ）活塞。