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公开(公告)号：EP3695134A1
公开(公告)日：2020-08-19
申请号：EP18783411.4
申请日：2018-10-02
发明人： WINKLER, Thomas , FÜLLER, Dieter , ZEIBIG, Uwe , MÜLLER, Matthias
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公开(公告)号：EP3411585A1
公开(公告)日：2018-12-12
申请号：EP17703381.8
申请日：2017-02-02
发明人： KENNINGLEY, Scott , CROMME, Wolfram , MORGENSTERN, Roman , HOPP, Georg , FRÖDE, Kay , UNGERMANN, Sven , MERGLER, Harald
摘要： A piston made of cast steel or gray cast iron for an internal combustion engine comprises a cooling channel, shaft walls (16, 18) and connecting walls (20) between the shaft walls (16, 18) and is asymmetrical between the pressure side and the back-pressure side, in the direction of the piston axis, in respect of the width of the shaft walls (16, 18) and/or the thickness and/or dimensions of the connecting walls (20). A method for manufacturing said piston is also described.
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公开(公告)号：EP3288698A4
公开(公告)日：2018-07-11
申请号：EP16789876
申请日：2016-05-02
发明人： SHIVPURI RAJIV
CPC分类号： B21K1/185 , B23P15/10 , F02F3/18 , F02F3/22 , F02F2200/04
摘要： 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.
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公开(公告)号：EP3334545A1
公开(公告)日：2018-06-20
申请号：EP16753336.3
申请日：2016-08-11
发明人： LAQUA, Matthias
CPC分类号： F02F3/20 , B21K1/18 , B21K1/185 , B23P15/10 , F02F3/22 , F02F2003/0007 , F02F2200/04 , F16J1/001
摘要： The invention relates to a method for producing a cooling channel piston (9) for an internal combustion engine which cooling channel piston has a cooling channel (8) in the piston crown (2) of the cooling channel pistion, wherein the piston crown (2) connects a piston bottom part with piston bosses (4), bolt bores (12), and piston skirts (13), wherein a piston blank (1) having a circumferential collar (3) which protrudes radially in the region of the piston crown (2) is first produced and the collar (3) is then shaped. The method is characterized in that there is a contact region (5) on a top region of the piston skirts (13) and the collar (3) is shaped such that the outer circumferential edge thereof points at a distance to the contact region (5) and forms a defined gap (9), wherein the gap (9) is then sealed by a closure element (10) in order to form a closed cooling channel (8).
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公开(公告)号：EP3288698A1
公开(公告)日：2018-03-07
申请号：EP16789876.6
申请日：2016-05-02
发明人： SHIVPURI, Rajiv
摘要： 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.
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6.发明公开PISTON RING, RAW MATERIAL THEREFOR, AND PRODUCTION METHOD FOR BOTH 审中-公开KOLBENRING，ROHMATERIALDAFÜRUND HERSTELLUNGSVERFAHRENFÜRBEIDES
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7.发明授权SCHMIEDEVORRICHTUNG ZUR HERSTELLUNG EINES KOLBENROHLINGS UND VERFAHREN ZUR HERSTELLUNG DES KOLBENROHLINGS UNTER VERWENDUNG DER SCHMIEDEVORRICHTUNG 有权锻造加工装置用于制造活塞坯件及其制造方法活塞坯件使用伪造DEVICE
公开(公告)号：EP2763805B1
公开(公告)日：2016-03-02
申请号：EP12791078.4
申请日：2012-10-05
CPC分类号： B21K1/18 , B21J5/025 , B21J13/02 , B21J13/025 , B21K1/185
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8.发明公开SCHMIEDEVORRICHTUNG ZUR HERSTELLUNG EINES KOLBENROHLINGS UND VERFAHREN ZUR HERSTELLUNG DES KOLBENROHLINGS UNTER VERWENDUNG DER SCHMIEDEVORRICHTUNG 有权锻造加工装置用于制造活塞坯件及其制造方法活塞坯件使用伪造DEVICE
公开(公告)号：EP2763805A1
公开(公告)日：2014-08-13
申请号：EP12791078.4
申请日：2012-10-05
CPC分类号： B21K1/18 , B21J5/025 , B21J13/02 , B21J13/025 , B21K1/185
摘要： Disclosed is a forging device (1) for producing a piston blank (28), comprising a forging mold (7, 10, 11) that has an essentially cylindrical cavity matching the radial outer surface of the piston blank (28), a forging base (8) delimiting the cavity, and a central die (14) consisting of a mandrel (21) that has a conically tapering extension (24) 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 (27, 27') and a peripheral cooling pocket (20) located radially outside the slipper walls (27, 27') in the piston head (29), the forging device (1) has two lateral jaws (10, 11) which are mounted in the forging device (1) so as to be movable at an angle to the longitudinal axis (3) of the forging device (1).
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公开(公告)号：EP1327089B1
公开(公告)日：2009-07-22
申请号：EP01981625.5
申请日：2001-10-17
CPC分类号： F02F3/0023 , B21K1/18 , B23P15/10 , F02F3/00 , F02F3/0015 , F02F3/003 , F02F3/22 , F02F2200/04 , F02F2200/06 , Y10T29/49252 , Y10T29/49266 , Y10T29/49288
摘要： A multi-axially forged mono-bloc piston includes a lower crown part (14) forged of steel and including a pair of pin bosses (20) and an integral skirt (24) formed as one piece with the pin bosses . The lower crown part is friction welded to an upper crown part (12) to form at least one closed oil gallery (64) within the piston head. The lower crown part is forged in a longitudinal direction of the piston as well as laterally to impart longitudinal and laterally forged features of the piston. The laterally forged features may comprise undercut recesses (90) formed in the piston skirt to reduce material in the overall piston structure. The lateral forging may also result in the piston skirt being decoupled from the piston head by laterally forged slots (128) formed in the lower crown part between the piston skirt and the piston head.
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10.发明授权
公开(公告)号：EP1452250B1
公开(公告)日：2008-11-12
申请号：EP04003227.8
申请日：2004-02-13
CPC分类号： F02F3/22 , B21K1/18 , B21K1/185 , F16J1/09 , Y10T29/49249
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