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2. 发明公开

EP0961026A1 A fuel injector for an internal combustion engine 有权
标题翻译：一种用于内燃机的燃料喷射器
公开(公告)号：EP0961026A1
公开(公告)日：1999-12-01
申请号：EP99108365.0
申请日：1999-04-28
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Keiso, Takeda , Tomojiro, Sugimoto
IPC分类号： F02M61/18
CPC分类号： F02M61/184 , F02M61/1833 , F02M61/1846
摘要： In a fuel injector for an internal combustion engine having an injection hole (8), a valve body (7a), and a fuel reservoir (7b) on the downstream side of a seat portion (7c) of the valve body (7a), the width of the injection hole (8) is gradually narrowed inward at a predetermined included angle (θ1), an opening on the outer side of the injection hole (8) has a width (w1) sufficiently larger than the height (h) thereof. The tip of the fuel reservoir (7b) is communicated with the injection hole (8) via a passage portion (9) which has a uniform cross section. On each transverse plane within the height of the injection hole (8), the tip of the fuel reservoir (7b) has an arc shape, on the transverse plane passing through the center of the height of the injection hole (8), the tip of the fuel reservoir (7b) has a hemicircle shape and the vertex (P) of the predetermined included angle (θ1) is located on the upstream side of the center (O) of the hemicircle shape.
摘要翻译：在阀体（7a）的座部（7c）的下游侧具有喷孔（8），阀体（7a）和燃料箱（7b）的内燃机用燃料喷射阀中，喷射孔8的宽度以预定的夹角（θ1）向内逐渐变窄，喷射孔8外侧的开口具有足够大于其高度（h）的宽度（w1）。燃料罐7b的前端通过截面均匀的通路部9与注入孔8连通。在喷射孔（8）的高度内的每个横向平面上，燃料储存器（7b）的尖端在穿过喷射孔（8）的高度中心的横向平面上具有弧形形状，尖端（7b）的半径为半圆形状，规定夹角（θ1）的顶点（P）位于半圆形状的中心（O）的上游侧。

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