公开(公告)号：US20140137405A1

公开(公告)日：2014-05-22

申请号：US14162950

申请日：2014-01-24

Applicant: MAHLE INTERNATIONAL GMBH

Inventor： Rainer SCHARP ,  Peter KEMNITZ ,  Michael ULLRICH

IPC: B23P15/10

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

Abstract: A method for producing piston for an internal combustion engine which 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: 一种用于制造内燃机的活塞的方法，该内燃机具有具有周向冷却通道的活塞头以及具有通过碗边缘区域向活塞冠过渡的周向碗壁的燃烧碗。 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。 下焊缝 接缝被配置在碗壁中，该接缝与活塞中心轴线（M）围成锐角并且终止于冷却通道的下半部分。 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：US20140331958A1

公开(公告)日：2014-11-13

申请号：US14337316

申请日：2014-07-22

Applicant: MAHLE International GmbH

Inventor： Karlheinz BING ,  Michael T. LAPP ,  Rainer SCHARP ,  Michael ULLRICH

IPC: F02F3/00

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

Abstract: A method for the production of a piston for an internal combustion engine, having 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 at least a crown region of a combustion bowl as well as the piston skirt. The piston ring element has at least 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 are connected by a circumferential joining seam in the region of the combustion bowl.

Abstract translation: 一种用于生产用于内燃机的活塞的方法，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。 活塞基体至少具有燃烧碗的冠部区域以及活塞裙部。 活塞环元件至少具有活塞冠，燃烧碗的壁区域，周向顶部区域和具有环形槽的圆周环形带。 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通过在燃烧碗的区域中的周向连接接缝连接。