发明名称 Fuel Injection Valve and Method for Forming Orifice Thereof
摘要 A fuel injection valve comprises a convex portion prominently formed on an outer end surface of a nozzle body, stepped recesses each of which has plural steps formed by press forming on the convex portion, and multi orifices as fuel nozzle holes formed by press forming so that an outlet of each of the orifices is located at a bottom face of each of the stepped recesses. Furthermore, the fuel injection valve has plural sets each of which comprises one of the stepped recesses and the relevant orifice, the orifices incline to each other, and a step on a downstream side in each of the stepped recesses has a larger diameter than a step on an upstream side thereof.
申请公布号 US2009242668(A1) 申请公布日期 2009.10.01
申请号 US20080194221 申请日期 2008.08.19
申请人 HITACHI, LTD. 发明人 HIGUMA MASATO;GUNJI KENICHI;KAWAHARA KEIJI;SEKINE ATSUSHI
分类号 F02M61/10;B21C23/14 主分类号 F02M61/10
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