公开(公告)号：US06378792B2

公开(公告)日：2002-04-30

申请号：US09285843

申请日：1999-04-05

申请人： Kanehiro Fukaya ,  Masami Hirata ,  Norio Tsuzuki ,  Hiroshi Oda ,  Tsuneaki Aoki

发明人： Kanehiro Fukaya ,  Masami Hirata ,  Norio Tsuzuki ,  Hiroshi Oda ,  Tsuneaki Aoki

IPC分类号： F02M6100

CPC分类号： F02M61/18 ,  B23K26/389 ,  B23K26/40 ,  B23K2103/04 ,  B23K2103/50 ,  F02M61/168 ,  F02M61/1806

摘要： A fuel injection nozzle is provided with a valve seat having a valve opening in which a valve is slidably provided, and a seat portion on which the valve is seated, and a nozzle tip having a sack portion and an injection opening 36a formed on the sack portion. The valve seat is formed of metal, and at the same time, the nozzle tip is molded by metal injection molding, wherein the valve seat and nozzle tip are joined by welding, or after the injection opening of the nozzle tip is formed from the upstream side in the fuel injection direction by laser machining, the valve seat and nozzle tip are joined by welding.

摘要翻译： 燃料喷射喷嘴设置有阀座，阀座具有可滑动地设置有阀的阀开口和阀座所在的阀座部分，以及形成在袋上的袋部和喷射口36a的喷嘴头 一部分。 阀座由金属形成，同时通过金属注射成型来模制喷嘴头，其中阀座和喷嘴尖端通过焊接连接，或者在喷嘴头的喷射开口由上游形成之后 通过激光加工在燃料喷射方向上，阀座和喷嘴尖端通过焊接接合。