- 专利标题: KRAFTSTOFFEINSPRITZVENTIL FÜR BRENNKRAFTMASCHINEN
- 专利标题(英): Fuel injection valve for internal combustion engines
-
申请号: EP03737862.7申请日: 2003-04-25
-
公开(公告)号: EP1546547A1公开(公告)日: 2005-06-29
- 发明人: OHNMACHT, Markus , MATTES, Patrick , TESCHNER, Werner , CHRIST, Wilhelm , BOECKING, Friedrich
- 申请人: ROBERT BOSCH GMBH
- 申请人地址: Postfach 30 02 20 70442 Stuttgart DE
- 专利权人: ROBERT BOSCH GMBH
- 当前专利权人: ROBERT BOSCH GMBH
- 当前专利权人地址: Postfach 30 02 20 70442 Stuttgart DE
- 优先权: DE10245573 20020927
- 国际公布: WO2004031570 20040415
- 主分类号: F02M61/18
- IPC分类号: F02M61/18
摘要:
The invention relates to a fuel injection valve for internal combustion engines with a valve body (1), in which a drilling (3) is embodied, defined at the combustion chamber end thereof by a conical valve seat (12). A piston-like valve needle (5) is arranged in the drilling (3), such as to be longitudinally displaced, which comprises a valve sealing surface (10) at the combustion chamber end thereof which has two conical surfaces (20; 22). The second conical surface (22) is arranged on the combustion chamber side of the first conical surface (20) and an annular groove (25) runs between the conical surfaces (20; 22) the edge thereof facing away from the combustion chamber acting as a sealing edge (27) on location of the valve sealing surface (10) on the valve seat (12). Recesses are embodied on the valve seat (12) and/or on the valve sealing surface (10), hydraulically connecting the annular groove (25) with a section between the valve seat (12) and valve sealing surface (10) on the combustion chamber side of the annular groove (25).
公开/授权文献
- EP1546547B1 KRAFTSTOFFEINSPRITZVENTIL FÜR BRENNKRAFTMASCHINEN 公开/授权日:2006-11-22
信息查询