公开(公告)号：EP1718778B1

公开(公告)日：2017-04-19

申请号：EP05714972.6

申请日：2005-02-15

申请人： MAHLE GMBH ,  PEAK Werkstoff GmbH

发明人： BISCHOFBERGER, Ulrich ,  KRUG, Peter ,  SINHA, Gero

IPC分类号： C22C21/08 ,  C22F1/047

CPC分类号： C22C21/08 ,  C22F1/047

公开(公告)号：EP1546535B1

公开(公告)日：2011-08-31

申请号：EP03769200.1

申请日：2003-09-19

申请人： MAHLE GMBH

发明人： KEMNITZ, Peter

IPC分类号： F02F3/22 ,  F02F3/00

CPC分类号： F02F3/22 ,  F02F3/003 ,  F02F3/0084 ,  F05C2201/0448

摘要： The invention relates to a multi-part cooled piston (20) for an internal combustion engine, said piston comprising a steel piston upper part (1) provided with a combustion cavity (3) and an annular wall (4) having an annular part (11), in addition to a piston lower part (2) comprising a box-type piston shaft (9), hubs (12) for receiving the piston pin connecting the piston (20) to the connecting rod, and hub supports (6) connected to the piston shaft (9).The aim of the invention is to produce one such piston with high dimensional stability and an improved cooling system in a cost-effective manner. To this end, a cooling channel (7) formed inside the piston upper part (1) comprises bore holes (14) distributed about the circumference thereof and oriented towards the bottom of the piston; the piston material located between the bore holes (14) forms support ribs (8) which respectively form sections of a surrounding annular rib (5), radially in relation to the longitudinal axis (K) of the piston; the lower part (2) of the piston comprises a surrounding carrier rib (10) which is connected to the hub supports (6); and the piston upper part (1) and the piston lower part (2) are interconnected by means of the annular rib and the carrier rib (5, 10) in a fixed manner.

公开(公告)号：EP1636475B1

公开(公告)日：2011-04-27

申请号：EP04738627.1

申请日：2004-06-09

申请人： MAHLE GMBH

发明人： SCHARP, Rainer

IPC分类号： F02F3/22

CPC分类号： F02F3/22 ,  F02F2003/0007

摘要： The invention relates to a single-pieced piston (1) for an internal combustion engine. Said piston comprises an annular shaped cooling channel (6) disposed in the edge area of the base of the piston (4). Said cooling channel is closed by a cooling channel cover (18), towards the side of the bolt hubs (10,10') consisting of at least two semi-circular covering elements (19, 20) and said cover, is embodied as a supporting element. The external edge (23) of the cover supports the bolt hub side front surface of the annular wall (7).

公开(公告)号：EP1706613B1

公开(公告)日：2010-04-07

申请号：EP05726245.3

申请日：2005-01-24

申请人： MAHLE GMBH

发明人： ISSLER, Wolfgang

IPC分类号： F02B23/06 ,  F02F3/26

CPC分类号： F02B23/0651 ,  F02B23/0621 ,  F02B23/0669 ,  F02B23/0672 ,  F02F3/26 ,  F02F3/28 ,  Y02T10/125

公开(公告)号：EP1697662B1

公开(公告)日：2009-04-08

申请号：EP04818847.8

申请日：2004-11-19

申请人： Mahle Technology, Inc. ,  MAHLE GMBH

发明人： REIN, Wolfgang ,  DOUGLAS, Jonathan

IPC分类号： F16J1/16

CPC分类号： B22F7/06 ,  B22F2998/00 ,  C22C29/08 ,  F16J1/16 ,  B22F2207/03 ,  B22F2207/13

摘要： The present invention relates to a connecting rod (24) and piston pin assembly (26) for an internal combustion engine (12) to improve wear of the piston (22)/connecting rod (24) pivot point and reduce deformation of the pin bore (54). To this end, the assembly includes a piston (22) having a pin bore (54), a connecting rod (24) having a bore (66) adapted to be aligned with the piston pin bore (54) and piston pin (26) interconnecting the piston (22) and the connecting rod (24) through engaging their respective bores. The connecting rod (24) includes an internal gallery (67) between the bore (66) and a terminal end (64). The piston pin (26) has a profiled outer circumference that is substantially circular in cross-section with a larger diameter at the distal ends (56,58) than at the center portion (60). Either the pin (26) or one end of the connecting rod (62) includes a phosphatized coating having a thickness between two and eight microns to facilitate movement between the connecting rod bore (66) and the profiled piston pin (26).

公开(公告)号：EP1350045B1

公开(公告)日：2008-11-19

申请号：EP01995561.6

申请日：2001-11-29

申请人： MAHLE GMBH

发明人： ULLRICH, Michael

IPC分类号： F16J1/09 ,  F02F3/22

CPC分类号： F16J1/09 ,  B22D19/0027 ,  B22D19/0072 ,  F02F3/22 ,  F05C2201/021 ,  Y10T29/49274 ,  Y10T29/49279 ,  Y10T29/49419 ,  Y10T29/49988 ,  Y10T29/49995

摘要： The invention relates to a method for producing a ring support (1) with a sheet metal cooling channel welded thereon (5), which is transfused later with an aluminium melt for producing a piston. The aim of the invention is to improve the production of openings (4) for supplying and removing oil. Said openings are produced even before the transfusion of the cooled ring support. When the alfin pretreament of the cooling ring supports occurs, said cooling channel is filled with melt and emptied again during removal from the alfin bath.

公开(公告)号：EP1490589B1

公开(公告)日：2008-04-02

申请号：EP03745747.0

申请日：2003-04-02

申请人： MAHLE GMBH

发明人： BAUER, Valery

IPC分类号： F02F3/22

CPC分类号： F02F3/22

摘要： An oil inlet (2) for a piston (1) provided with a cooling duct (4) and installed in an internal combustion engine is designed in order to enable an improved concentration of a cooling oil stream when entering the oil inlet and an improved distribution when exiting into the cooling duct. To this end, the inner wall surface (3) of the oil inlet (2) is shaped according to a function of a one-sheeted rotating hyperboloid or of a surface-delimited torus, whereby the shape is determined according to a stream position of the cooling oil stream (7), which is produced by an oil spraying nozzle (6), relative to the cross sectional opening area (B, D) of the oil inlet.

公开(公告)号：EP1680246B1

公开(公告)日：2007-07-11

申请号：EP04765979.2

申请日：2004-10-16

申请人： MAHLE GMBH

发明人： MOLL, Florian ,  OEMISCH, Lutz ,  BISCHOFBERGER, Ulrich ,  KAINER, Karl Ulrich Prof. Dr.-Ing. ,  HORT, Norbert ,  DIERINGA, Hajo ,  FRANK, Hagen

IPC分类号： B22D17/00 ,  C22C1/00 ,  C22C32/00 ,  C22C23/00 ,  C22C1/04

CPC分类号： B22D17/007 ,  C22C1/005 ,  C22C1/1036 ,  C22C32/0078 ,  C22C2001/1052

摘要： The invention relates to a method for producing metal matrix composite materials, comprising at least one proportion of magnesium or one magnesium alloy and involving at least one production step in which a thixomolding ensues. According to the invention, an Mg2Si phase having a volume fraction of at least 2 % is incorporated in a metal matrix preferably comprised of magnesium or of a magnesium alloy. The inventive method uses the thixomolding method for the in-situ production of a metallic composite material and is advantageous in that a broad range of adjustable volume fractions of the Mg2Si phase in the composite material results whereby enabling the properties of the composite material to be individually modified. The inventive metal matrix composite material is particularly suited for producing thermally stressed parts of motor vehicles such as pistons or the like.

公开(公告)号：EP1761697A1

公开(公告)日：2007-03-14

申请号：EP05761990.0

申请日：2005-06-20

申请人： MAHLE GMBH

发明人： SCHARP, Rainer

IPC分类号： F02F3/00

CPC分类号： F02F3/0023 ,  F02F3/22

摘要： The invention relates to an assembled piston (1) for an internal combustion engine, said piston consisting of an upper part (4) provided with a combustion cavity (8), and a lower part (5) that is screwed to the upper part (4) by means of a screw (6) which is arranged coaxially to the piston axis (31). Said screw (6) is embodied as a set screw comprising a hexagon socket (6') on the inner side of the piston and a head (6'') on the bottom side of the piston, the head (6') forming part of the bottom of the combustion cavity (8) and being flush therewith (8) in the screwed state.

公开(公告)号：EP1721072A1

公开(公告)日：2006-11-15

申请号：EP05714992.4

申请日：2005-02-18

申请人： MAHLE GMBH

发明人： BING, Karlheinz ,  SPANGENBERG, Stefan ,  SCHULLER, Georg

IPC分类号： F02F1/00 ,  F02F1/10 ,  F02F1/16 ,  B22D19/00

CPC分类号： F02F1/00 ,  B22D19/0009 ,  F02F1/10 ,  F02F1/16 ,  F05C2201/0439 ,  F05C2201/903 ,  F05C2251/042 ,  Y10T29/49272

摘要： Disclosed is a cylinder sleeve for an internal combustion engine. The outer surface of said cylinder sleeve is provided with a flat zone (61) that extends along the entire axial length thereof. The inventive cylinder sleeve is embodied as a rough cast sleeve whose outer surface comprises a rough zone that extends along the entire axial length thereof and consists of a plurality of elevations with undercuts in order to ensure that a sufficient amount of combustion heat generated during operation of the engine is discharged.

摘要翻译： 用于内燃机的气缸套设置有沿着其整个轴向长度延伸的平坦区域。 气缸套被实施为粗略铸造套筒，其外表面包括沿其整个轴向长度延伸的粗糙区域，并且由具有底切的多个凸起组成，以确保在操作期间产生足够量的燃烧热量 发动机排放。