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公开(公告)号:US20200072158A1
公开(公告)日:2020-03-05
申请号:US16605521
申请日:2018-04-18
摘要: Piston (1) of an internal combustion engine, which piston is designed in structured construction, comprising two oppositely arranged load-bearing skirt wall portions (2), wherein a connecting wall (3) respectively extends, starting from a pin boss (4), in the direction of the side edge of the load-bearing skirt wall portions (2), characterized in that in an interior of the piston (1) is (are) disposed at least one rib (5, 6, 7), preferably three ribs (5, 6, 7), and the material of the regions around the at least one rib (5, 6, 7) is reduced.
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公开(公告)号:US20190022739A1
公开(公告)日:2019-01-24
申请号:US16070587
申请日:2017-01-20
发明人: Emmerich Ottliczky , Matthias Fahr , Gregor Müller , Ralf Stier
IPC分类号: B21K1/18
摘要: A method for producing a cooling duct piston for an internal combustion engine having a cooling duct in its piston crown. A piston main body is produced with a collar which is circumferential and projects radially in the region of the piston crown. The collar is formed until its outer circumferential edge comes very closely or completely into contact with a bearing region of the piston lower part forming the cooling duct. At least one ring groove is introduced. A ring-free groove is further formed below the ring groove, wherein a dividing plane lies between the outer circumferential edge of the formed collar and an upper side of the piston lower part in the ring-free groove.
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公开(公告)号:US11668263B2
公开(公告)日:2023-06-06
申请号:US16605521
申请日:2018-04-18
CPC分类号: F02F3/0076 , B23P15/10 , F02F3/22 , F16J1/02 , F16J1/04 , F02F2200/04
摘要: Piston (1) of an internal combustion engine, which piston is designed in structured construction, comprising two oppositely arranged load-bearing skirt wall portions (2), wherein a connecting wall (3) respectively extends, starting from a pin boss (4), in the direction of the side edge of the load-bearing skirt wall portions (2), characterized in that in an interior of the piston (1) is (are) disposed at least one rib (5, 6, 7), preferably three ribs (5, 6, 7), and the material of the regions around the at least one rib (5, 6, 7) is reduced.
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公开(公告)号:US20190178202A1
公开(公告)日:2019-06-13
申请号:US16321855
申请日:2017-08-30
发明人: Gregor Müller
摘要: A piston for an internal combustion engine including an outer part and an inner part. The outer part includes a ring groove region and a piston skirt. The inner part includes a piston boss and pin bores. The inner part is inserted into the outer part and engages the outer part at a joint in at least one vertically-oriented plane. The inner part and the outer part are non-detachably joined at the joint forming a one-piece piston.
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公开(公告)号:US20180326477A1
公开(公告)日:2018-11-15
申请号:US15776477
申请日:2016-11-17
发明人: Gregor Müller
摘要: Method for producing a piston having a cooling channel produced by a lost core casting process. A lost core extends into a casting mold which forms the inner region of the piston blank. The lost core is used to form at least one opening having a rounded profile in communication with the cooling channel. A jet splitter may be formed in the cooling duct to divert injected cooling oil into the cooling duct.
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