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1.发明公开
公开(公告)号：EP2867509A1
公开(公告)日：2015-05-06
申请号：EP13731137.9
申请日：2013-06-24
CPC分类号： F02F3/22 , F02F3/0015 , F02F2003/0061 , Y10T29/49274
摘要： The invention relates to a method for producing a cooling duct piston (1) for an internal combustion engine, having the following steps of: producing a top piston part (6) by introducing a combustion bowl, a cooling space (4) of a part of a cooling duct (2) and also overflow ducts (5), producing a bottom piston part (7) by introducing a part of a cooling duct, and joining the piston parts, wherein at least one transfer duct is created by bores. Also claimed is a cooling duct piston produced by the method according to the invention.
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公开(公告)号：EP3341606A1
公开(公告)日：2018-07-04
申请号：EP16758155.2
申请日：2016-08-29
CPC分类号： F02F3/26 , B23K20/129 , B23K2101/003 , B23P15/10 , F02F3/003 , F02F3/10 , F02F3/22 , F02F2003/0061
摘要： The invention relates to a piston (1) for an internal combustion engine having an upper part (3) integrally joined to a lower part (2), wherein the lower part (2) comprises a shaft (6) and at least one pin bore (7), wherein the upper part (3) comprises a combustion chamber recess (11) and a piston crown (5) with a crown edge (27), characterized in that at least one join (4) is arranged in the region of a ring zone (9) and in an outer wall of the combustion chamber recess (11), and the ratio of piston compression height (h
1 ) and the diameter of the piston (d
1 ) is less than 0.53.-
公开(公告)号：EP3612727A1
公开(公告)日：2020-02-26
申请号：EP18719122.6
申请日：2018-04-18
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4.发明公开KOLBEN, INSBESONDERE KÜHLKANALKOLBEN EINER BRENNKRAFTMASCHINE MIT ZUMINDEST DREI REIBSCHWEISSZONEN 审中-公开活塞，特别是冷却通道活塞内燃机至少有三个REIBSCHWEISSZONEN
公开(公告)号：EP1924765A1
公开(公告)日：2008-05-28
申请号：EP05783061.4
申请日：2005-09-17
摘要： The invention relates to a piston, especially a cooling channel piston (1) of an internal combustion engine, having a first part (2) and a second part (3) and a third part (8). These parts can be produced separately from each other and subsequently be assembled by way of a joining method. One part, especially the third part (8) comprises, in direction of one part, especially the first part (2), at least one rotationally symmetrical joining area, and, in the direction of the other part, especially the second part (3), likewise an at least rotationally symmetrical joining area. Said joining areas mate joining areas of the two parts, especially the first part (2) and the second part (3).
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公开(公告)号：EP3710686A1
公开(公告)日：2020-09-23
申请号：EP18803941.6
申请日：2018-11-14
发明人： OTTLICZKY, Emmerich , LUZ, Gerhard , WEISS, Eberhard , ROTH, Ingo
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6.发明授权KOLBEN, INSBESONDERE KÜHLKANALKOLBEN, MIT DREI REIBSCHWEISSZONEN 有权活塞，特别是冷却通道活塞，三个REIBSCHWEISSZONEN
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公开(公告)号：EP1809885A1
公开(公告)日：2007-07-25
申请号：EP05803580.9
申请日：2005-09-29
发明人： GNIESMER, Volker , LUZ, Gerhard , MÜLLER, Jochen , SCHALLER, Christian , SCHMITZ, Ernst, Peter , KOLBE, Peter , DAMBACHER, Josef
CPC分类号： F02F3/003 , B23K20/129 , B23K31/02 , B23K2201/003 , F01P3/10 , F02F3/20 , F02F3/22 , F02F2003/0061 , F02F2200/04 , Y10T29/49249
摘要： The invention relates to a cooling channel piston (1) for an internal combustion engine, comprising a piston bottom (2) and a piston shaft (3) that is joined thereto by means of a friction welding process, the piston bottom (2) and the piston shaft (3) jointly forming a cooling channel (8). According to the invention, an annular wall (13) which radially delimits the cooling channel (8) towards the outside is formed by the piston bottom (2) and/or the piston shaft (3). Said annular wall (13) can be sealed using a welding process once the piston bottom (2) and the piston shaft (3) have been joined together.
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8.发明公开VERFAHREN ZUR HERSTELLUNG EINES KOLBENS EINER BRENNKRAFTMASCHINE ZUR BILDUNG EINER BEWEHRUNG EINER BRENNRAUMMULDE DES KOLBENS 审中-公开一种用于生产活塞内燃发动机形成强化的内部区域BODY活塞
公开(公告)号：EP1805406A1
公开(公告)日：2007-07-11
申请号：EP05802314.4
申请日：2005-10-25
CPC分类号： B21K1/18 , B23P15/10 , F02B23/0672 , F02B2023/0612 , F02F3/003 , F02F2003/0061 , F02F2200/04 , Y10T29/49249
摘要： Disclosed is a method for producing a piston (6) of an internal combustion engine, according to which a first blank (1) and at least one additional blank (2) are molded into or are provided with a somewhat cylindrical shape, the blanks (1, 2) are joined together, the obtained piston blank (4) is subjected to a shaping process in which a combustion chamber cavity (9) of the piston (6) is formed in the area of a joining point (3) between blank (1) and blank (2), and the material of the second blank (2) forms a reinforcement at least of the combustion chamber cavity (9).
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公开(公告)号：EP2900992A1
公开(公告)日：2015-08-05
申请号：EP13763077.8
申请日：2013-09-18
CPC分类号： F02F3/18 , F01P3/06 , F02F3/003 , F02F3/22 , F02F2003/0053 , F02F2003/0061 , Y10T29/49252
摘要： The invention relates to a piston (1) for an internal combustion engine, configured as a gallery-cooled piston of two-piece construction which comprises a main body (2) and a ring element (3). The ring element (2) which has a ring zone (18) and a fire land (17) encloses a cooling gallery (15) on the outside, which cooling gallery (15) is delimited on the inside by an intermediate wall (16) which separates the cooling gallery (15) from a combustion-chamber recess (12) which is made in a piston head (10) of the main body (2). The main body (2) and the ring element (3) together form two circumferential dividing planes (4a, 5a) which are offset with respect to one another, to which end in each case two interacting joining webs (6a, 6b; 7a, 7b) of the ring element (3) and of the main body (2) are connected with a material-to-material bond.
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10.发明公开VERFAHREN ZUR ERZEUGUNG EINER BELIEBIG GESTALTETEN GEOMETRIE AN KOLBEN VON BRENNKRAFTMASCHINEN 审中-公开用于生产所有加框几何形状，以内燃机PISTONS
公开(公告)号：EP2569121A1
公开(公告)日：2013-03-20
申请号：EP11704548.4
申请日：2011-02-12
CPC分类号： B23H3/10 , B23H9/00 , B23H9/006 , B23H9/14 , B23P15/10 , F02F3/003 , F02F3/18 , Y10T29/49275 , Y10T29/49277
摘要： The invention relates to a method for processing a constructed, liquid-cooled piston (1) of an internal combustion engine, said piston comprising an upper piston part (2) and a lower piston part (7), which are supported by means of a joining plane (10) and are connected to each other in a bonded manner. An electrochemical method, electrochemical machining, is used to produce a passage opening (12) or a hole in the piston (1). By means of said method, material is selectively removed after the completion of the upper piston part (2), the lower piston part (7), or the piston (1) after the two piston components have been joined. The electrochemical machining allows an arbitrarily geometrically designed topography having at least one passage opening (12), a hollow, or an oil pocket in cooling areas or non-cooling areas to be created on the piston (1).
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