发明授权
- 专利标题： Piston for internal combustion engines
- 专利标题（中）： 内燃机活塞
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申请号： US12448023申请日： 2007-11-29
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公开(公告)号： US08157268B2公开(公告)日： 2012-04-17
- 发明人: Antonio Eduardo Meirelles Tomanik , Mauricio Ciminelli Duarte de Souza
- 申请人： Antonio Eduardo Meirelles Tomanik , Mauricio Ciminelli Duarte de Souza
- 申请人地址： DE Stuttgart BR Sao Paulo SP
- 专利权人： MAHLE International GmbH,MAHLE Metal Leve S/A
- 当前专利权人： MAHLE International GmbH,MAHLE Metal Leve S/A
- 当前专利权人地址： DE Stuttgart BR Sao Paulo SP
- 代理机构： Collard & Roe, P.C.
- 优先权： BR0605175 20061205
- 国际申请： PCT/IB2007/003887 WO 20071129
- 国际公布： WO2008/068613 WO 20080612
- 主分类号： B60T11/236
- IPC分类号： B60T11/236 ; F02F5/00 ; F16J9/00 ; F16J9/14
摘要：
The present invention relates to a piston ring (10), particularly a compression ring, for an internal combustion engine, comprising a ring-shaped body (11) having a ring joint (13) formed by butt ends (14a, 14b), the ring-shaped body (11) further having a ring contact face (12) along its perimeter, for contacting a cylinder wall in operation. According to the invention, the ring contact face (12) has a barrel-shaped profile, the barrel-shaped profile having in any of its cross-sections an area of maximum curvature, whose radius of curvature increases in the direction of the butt ends (14a, 14b).
公开/授权文献
- US20100090416A1 PISTON FOR INTERNAL COMBUSTION ENGINES 公开/授权日：2010-04-15
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