发明公开
EP2000781A1 Shaft provided with a magnet for an air flow rate adjustment valve in an internal combustion engine
有权
Welle mit Magnetfürein durchflussregelendes Ventil eines Verbrennungsmotors
- 专利标题： Shaft provided with a magnet for an air flow rate adjustment valve in an internal combustion engine
- 专利标题（中）： Welle mit Magnetfürein durchflussregelendes Ventil eines Verbrennungsmotors
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申请号： EP07425348.5申请日： 2007-06-04
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公开(公告)号： EP2000781A1公开(公告)日： 2008-12-10
- 发明人: Colli, Marcello , Signorelli, Giorgio , Piciotti, Roberto , Bellato, Nazario
- 申请人： MAGNETI MARELLI POWERTRAIN S.p.A.
- 申请人地址： Viale Aldo Borletti, 61/63 20011 Corbetta (MI) IT
- 专利权人： MAGNETI MARELLI POWERTRAIN S.p.A.
- 当前专利权人： MAGNETI MARELLI POWERTRAIN S.p.A.
- 当前专利权人地址： Viale Aldo Borletti, 61/63 20011 Corbetta (MI) IT
- 代理机构： Jorio, Paolo
- 主分类号： G01D5/14
- IPC分类号： G01D5/14 ; B29C45/00 ; F02D9/10 ; G01P3/487 ; H01F1/42 ; F16K1/22
摘要：
A manufacturing method of a shaft (6) provided with a magnet (24) for an air flow rate adjustment valve (1) in an internal combustion engine; the method presents the steps of: arranging a first mold (26) which negatively reproduces the shape of the shaft (6) and determines the formation of a seat (28) for the magnet (24); injecting a molten plastic material inside the mold (26) in order to form the shaft (6) provided with the seat (28) for the magnet (24) by injection molding; arranging a second mold (27) which surrounds the seat (28) for the magnet (24); and injecting a molten magnetic polymer in the second mold (27) for forming the magnet (24) by injection molding.
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