公开(公告)号：US10569325B2

公开(公告)日：2020-02-25

申请号：US15754601

申请日：2016-08-29

Applicant: KS Kolbenschmidt GmbH

Inventor： Eberhard Weiss

IPC: F02F3/18 ,  B21K1/18 ,  B23P15/10 ,  F02B23/06

Abstract: The invention discloses a method for producing an internal combustion engine piston having at least one cavity which is filled with an alkali metal cooling medium and is subsequently closed. The at least one cavity longitudinally extends from a central point into the piston body toward the piston circumference. The invention further discloses a piston produced according to the method.

公开(公告)号：US20190323450A1

公开(公告)日：2019-10-24

申请号：US16470642

申请日：2017-12-19

Applicant: KS Kolbenschmidt GmbH

Inventor： Gerhard LUZ ,  Ingo ROTH ,  Eberhard WEISS

IPC: F02F3/22 ,  F01P3/10 ,  F01P7/14 ,  B21K1/18

Abstract: A piston for an internal combustion engine includes a piston upper part and a piston lower part having a cooling channel including at least one inlet opening. A dam-type elevation is formed in the region of the at least one inlet opening through forging of the dam elevation in the cooling channel portion in the piston lower part. In one example, a funnel-shaped inlet contour is formed in the inlet opening by pre-forging. In one example, a V-shaped element is formed in the piston upper part cooling chamber portion in alignment with the inlet opening and used as a coolant jet splitter.

公开(公告)号：US10144052B2

公开(公告)日：2018-12-04

申请号：US15426724

申请日：2017-02-07

Applicant: Ohio State Innovation Foundation

Inventor： Rajiv Shivpuri

IPC: B21K1/18 ,  B23P15/10 ,  F02F3/18 ,  F02F3/22

Abstract: A piston, particularly a piston for use in a diesel engine, particularly a heavy duty diesel engine, is formed from a billet of metal, such that the finished piston has a mass that is at least 50%, and, more preferably, up to about 62%, of the mass of the billet. Other than finishing steps, the piston is formed with a closed gallery, without loss of mass through machining processes.

公开(公告)号：US10077738B2

公开(公告)日：2018-09-18

申请号：US14778076

申请日：2014-03-18

Applicant: Mahle International GmbH

Inventor： Gerhard Berr ,  Sascha-Oliver Boczek ,  Reiner Mueller ,  Rainer Scharp

IPC: B21K1/18 ,  F02F3/28 ,  B23P15/10 ,  F02F3/00 ,  B23K15/00 ,  B23K26/32 ,  B23K26/282 ,  B23K101/00 ,  B23K103/04 ,  F02F3/22 ,  B23K103/00

CPC classification number: F02F3/28 ,  B21K1/18 ,  B21K1/185 ,  B23B2215/245 ,  B23K15/0053 ,  B23K15/0093 ,  B23K26/282 ,  B23K26/32 ,  B23K2101/003 ,  B23K2103/04 ,  B23K2103/50 ,  B23P15/10 ,  F02F3/003 ,  F02F3/22 ,  F02F2003/0061 ,  F02F2200/04

Abstract: A method for producing a piston for an internal combustion engine may include the steps of: producing a piston main body from a first blank via a deformation process; producing a piston ring part from a second blank via at least one of a deformation process and a casting process; pre-machining the first blank and the second blank, and finish machining a welding surface of the first blank and a welding surface of the second blank; connecting the pre-machined first blank and the pre-machined second blank via a welding process to form a piston body; and performing at least one of a secondary machining and a finish machining of the piston body to produce the piston.

公开(公告)号：US20180119636A1

公开(公告)日：2018-05-03

申请号：US15796723

申请日：2017-10-27

Applicant: Mahle International GmbH

Inventor： Klaus Keller ,  Rainer Scharp

IPC: F02F3/16 ,  B21K1/18 ,  B23K20/12 ,  B23K26/21

CPC classification number: F02F3/16 ,  B21K1/185 ,  B23K20/12 ,  B23K20/129 ,  B23K26/21 ,  B23K2101/003 ,  F02F3/22 ,  F02F2003/0061

Abstract: A method for manufacturing a piston of an internal combustion engine from a piston upper part and a piston lower part may include producing at least the piston lower part as a forged steel part. A partial cross section of a cooling duct may be provided in the piston lower part. A closed supply inlet funnel may be forged within the piston lower part. The closed supply inlet funnel may be bored into the piston lower part from the cooling duct. A borehole may be introduced into the piston lower part obliquely to a piston axis. The piston lower part and the piston upper part may be welded to one another.

公开(公告)号：US09782823B2

公开(公告)日：2017-10-10

申请号：US14349758

申请日：2012-10-05

Applicant: MAHLE International GmbH

Inventor： Roland Grunert ,  Juergen Friedrich ,  Timo Seng ,  Wolfgang Janisch ,  Armin Wenzel

IPC: B21K1/18 ,  B21J5/02 ,  B21J13/02

CPC classification number: B21K1/18 ,  B21J5/025 ,  B21J13/02 ,  B21J13/025 ,  B21K1/185

Abstract: A forging device for producing a piston blank has a forging mold that has an essentially cylindrical cavity matching the radial outer surface of the piston blank, a forging base delimiting the cavity, and a central die consisting of a mandrel that has a conically tapering extension which is mounted on the mandrel and the shape of which matches the inner surface of the piston blank. In order to form the radially outer surfaces of the piston slipper walls and a peripheral cooling pocket located radially outside the slipper walls in the piston head, the forging device has two lateral jaws which are mounted in the forging device so as to be movable at an angle to the longitudinal axis of the forging device.

公开(公告)号：US09470311B2

公开(公告)日：2016-10-18

申请号：US13523284

申请日：2012-06-14

Applicant: Michael T. Lapp

Inventor： Michael T. Lapp

IPC: F16J1/20 ,  F16J1/00 ,  B21K1/18 ,  F02F3/00 ,  F02F3/22

CPC classification number: F16J1/005 ,  B21K1/18 ,  F02F3/0023 ,  F02F3/22 ,  F16J1/20 ,  Y10T29/49256 ,  Y10T29/49263

Abstract: Exemplary power cell assemblies and methods of making the same are disclosed. An exemplary power cell assembly may include a piston crown and connecting rod. In an exemplary illustration, a power cell assembly includes a piston crown having a ringland extending circumferentially about a combustion bowl. The boss portions may each include inwardly extending shoulders defining arcuate crown running surfaces. The power cell assembly may further include a connecting rod having a shank and an upper end received in a cavity of the crown. The upper end of the connecting rod may define arcuate connecting rod running surfaces extending away from the shank. The crown running surfaces and connecting rod running surfaces generally allow the connecting rod to pivot with respect to the piston crown about an axis of rotation that extends from one of the boss portions to the other of the boss portions.

Abstract translation: 公开了示例性电池组件及其制造方法。 示例性电力单元组件可以包括活塞冠和连杆。 在示例性说明中，动力单元组件包括具有围绕燃烧碗圆周延伸的环状的活塞冠。 凸起部分可以各自包括限定弓形冠运动表面的向内延伸的肩部。 动力单元组件还可以包括连接杆，该连杆具有柄部和容纳在冠部的空腔中的上端部。 连杆的上端可以限定弓形连接杆运行表面，其远离柄部延伸。 龙头运行表面和连杆运行表面通常允许连杆相对于活塞冠围绕从一个凸台部分延伸到另一个凸台部分的旋转轴线枢转。

公开(公告)号：US20160288275A1

公开(公告)日：2016-10-06

申请号：US14777995

申请日：2014-03-18

Applicant: MAHLE INTERNATIONAL GMBH

Inventor： Gerhard Berr ,  Sascha-Oliver Boczek ,  Reiner Mueller ,  Rainer Scharp

IPC: B23P15/10 ,  F02F3/26 ,  F02F3/00 ,  B21K1/18

CPC classification number: B23P15/10 ,  B21K1/18 ,  B21K1/185 ,  B23B2215/245 ,  B23K35/0255 ,  B23K2101/003 ,  F02B23/0687 ,  F02B23/0696 ,  F02F3/003 ,  F02F3/26 ,  F02F2003/0061 ,  F02F2200/04 ,  F02F2200/06 ,  Y02T10/125

Abstract: A method for producing a piston for an internal combustion engine may include the steps of: producing a piston upper part from a first blank via a deformation process; producing a piston lower part from a second blank via at least one of a deformation process and a casting process; connecting the first blank of the piston upper part and the second blank of the piston lower part to form a piston body via a welding process; and performing at least one of a secondary machining process and a finish machining process of the piston body to produce the piston.

Abstract translation: 一种内燃机的活塞的制造方法可以包括以下步骤：通过变形处理从第一坯料制造活塞上部; 通过变形过程和铸造过程中的至少一个从第二坯料生产活塞下部; 连接活塞上部的第一坯料和活塞下部的第二坯料，通过焊接工艺形成活塞体; 并且执行活塞体的二次加工处理和精加工处理中的至少一个以制造活塞。

公开(公告)号：US20130333557A1

公开(公告)日：2013-12-19

申请号：US13523284

申请日：2012-06-14

Applicant: Michael T. Lapp

Inventor： Michael T. Lapp

IPC: F02F3/00 ,  F02F3/16 ,  F02F3/26 ,  B21K1/18

CPC classification number: F16J1/005 ,  B21K1/18 ,  F02F3/0023 ,  F02F3/22 ,  F16J1/20 ,  Y10T29/49256 ,  Y10T29/49263

Abstract: Exemplary power cell assemblies and methods of making the same are disclosed. An exemplary power cell assembly may include a piston crown and connecting rod. In an exemplary illustration, a power cell assembly includes a piston crown having a ringland extending circumferentially about a combustion bowl. The boss portions may each include inwardly extending shoulders defining arcuate crown running surfaces. The power cell assembly may further include a connecting rod having a shank and an upper end received in a cavity of the crown. The upper end of the connecting rod may define arcuate connecting rod running surfaces extending away from the shank. The crown running surfaces and connecting rod running surfaces generally allow the connecting rod to pivot with respect to the piston crown about an axis of rotation that extends from one of the boss portions to the other of the boss portions.

Abstract translation: 公开了示例性电池组件及其制造方法。 示例性电力单元组件可以包括活塞冠和连杆。 在示例性说明中，动力单元组件包括具有围绕燃烧碗圆周延伸的环状的活塞冠。 凸起部分可以各自包括限定弓形冠运动表面的向内延伸的肩部。 动力单元组件还可以包括连接杆，该连杆具有柄部和容纳在冠部的空腔中的上端部。 连杆的上端可以限定弓形连接杆运行表面，其远离柄部延伸。 龙头运行表面和连杆运行表面通常允许连杆相对于活塞冠围绕从一个凸台部分延伸到另一个凸台部分的旋转轴线枢转。

公开(公告)号：US08011095B2

公开(公告)日：2011-09-06

申请号：US11791376

申请日：2005-11-23

Applicant: Wilfried Sander

Inventor： Wilfried Sander

IPC: B21K1/18

CPC classification number: F02F3/26 ,  B22D19/0027 ,  B22D19/14 ,  F02B23/0603 ,  F02B23/0639 ,  Y02T10/125 ,  Y10T29/49249 ,  Y10T29/49252 ,  Y10T29/49254 ,  Y10T29/49259

Abstract: The invention relates to a method for producing a piston for a combustion engine comprising a combustion recess, during which an annular fiber preform for reinforcing the edge of the combustion recess is firstly fastened inside the casting mold. Afterwards, a low-silicon aluminum/copper melt is introduced into the casting mold by which the fiber preform is infiltrated and molded into the recess edge within the scope of the casting process. The piston blank produced in this manner is then subsequently compacted by a high-temperature isostatic pressing before the piston is completed by means of a machining completion process. The flanks and the base areas of the second and third annular groove are coated by means of anodic oxidation, and the hub boreholes are smoothed and hardened by roller-burnishing. This results in a very high-quality and heavy-duty piston.

Abstract translation: 本发明涉及一种用于生产用于内燃机的活塞的方法，该燃烧发动机包括燃烧凹槽，在此期间首先将用于加强燃烧凹部的边缘的环形纤维预制件固定在铸模内。 然后，将低硅铝/铜熔体引入铸模中，通过该铸模将纤维预成型件渗透并在铸造过程的范围内模制到凹口边缘中。 以此方式制造的活塞坯料然后在活塞完成之前通过加工完成工艺通过高温等静压进行压实。 第二和第三环形槽的侧面和底部区域通过阳极氧化被涂覆，并且轮毂钻孔通过滚筒抛光被平滑和硬化。 这产生了非常高品质和重型活塞。