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1. 发明申请

WO2012080331A2 FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES 审中-公开
标题翻译：内燃机燃油喷射阀
公开(公告)号：WO2012080331A2
公开(公告)日：2012-06-21
申请号：PCT/EP2011072754
申请日：2011-12-14
申请人： BOSCH GMBH ROBERT , STUKE BERND , NUDING MICHAEL
发明人： STUKE BERND , NUDING MICHAEL
IPC分类号： F02M61/18
CPC分类号： F02M61/1886 , F02B23/0648 , F02B23/0654 , F02B23/0669 , F02B23/0696 , F02M61/1813 , F02M61/182 , F02M61/1826 , F02P19/02 , Y02T10/125
摘要： The invention relates to a fuel injection valve (1) comprising a valve body (5), in which a pressure chamber (7) is designed which, at one end, is delimited by a conical valve seat (13) to which a blind hole (14) connects. A valve needle (10) is arranged longitudinally displaceably in the pressure chamber (7), a valve sealing face (12) of the needle cooperating with the conical valve seat (13) to control a fuel flow from the pressure chamber (7) to injection openings (15; 115; 215) designed in the valve body (5), wherein a valve needle tip (18) of the valve needle (10) protrudes in the blind hole (14) when the needle is seated against the valve seat (13). The inlet opening (216) of an injection opening (215) is arranged downstream of the valve needle tip (18) in the blind hole (14) and the inlet openings (116) of the remaining injection holes (115) are arranged downstream of the valve needle tip (18) when the valve needle (10) is seated against the valve seat (13). An internal combustion engine comprising such a fuel injection valve (1) and a pencil-type glow plug (35) is designed such the fuel exiting the downstream injection opening (215) forms a pilot injection which is directed to or in the direct vicinity of the pencil-type glow plug (35). Because of the position of this injection opening, fuel is ejected in the direction of the pencil-type glow plug even when the valve needle is offset and even with small needle strokes.
摘要翻译：燃料喷射阀（1），其具有阀主体（5），在其中形成的压力室（7），其在一端由一锥形阀座（13）为界，由盲孔（14）邻接。在压力室（7）是阀针（10），其设置纵向移动，与阀密封表面（12）与锥形阀座（13）在阀体（5）设计成用于控制从所述压力腔室（7），注射开口（15燃料流; 115 215）时，阀针（10）在与阀座（13）接触时通过阀针尖（18）伸入盲孔（14）中。上游阀针尖端的剩余喷射孔（115）的抵接的注射端口（215）中的盲孔（14）的阀针尖端（18）的下游的入口开口（216）和所述入口开口（116）（18）当所述阀针（10）在阀座（13）上。形成具有这样的燃料喷射阀（1）和电热塞（35）的内燃机以使从离开的燃料的形式，其被引导到或进入电热塞（35）的紧邻附近的喷射点火下游喷射孔（215）。由于该喷射口的位置，即使在不饱和的阀针甚至小的针行程的情况下，燃料也沿着电热塞的方向喷射。

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