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2. 发明公开

EP2325473A1 FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE 有权转让
标题翻译：内燃机燃油喷射阀
公开(公告)号：EP2325473A1
公开(公告)日：2011-05-25
申请号：EP09814203.7
申请日：2009-07-29
申请人： Hitachi Automotive Systems, Ltd.
发明人： ABE, Motoyuki , HAYATANI, Masahiko , ISHIKAWA, Tohru , KOWATARI, Takehiko , TAKAOKU, Atsushi , NAMAIZAWA, Yasuo , IRINO, Yusuke
IPC分类号： F02M51/06
CPC分类号： F02M51/0653 , F02M2200/02 , F02M2200/90 , F02M2200/9061
摘要： In a fuel injection valve, it is intended to enhance valve-closing responsivity while maintaining durability (anti wear property) of a collision portion between a stationary core and a movable core and valve-opening responsivity.
An annular end face 106A of the movable core 106 in the fuel injection valve is provided with a collision portion 106C that collides to a stationary core 107 when the movable core is magnetically attracted toward the stationary core side and a non-collision portion that keeps a fluid gap between both cores at an area of an outer side or an inner side from the collision portion. The annular end faces of the stationary core and the movable core are coated with platings 30, 31 having anti wear property, and at least one of the platings of the stationary core and the movable core is formed in such a manner that the thickness thereof at the collision portion 106C is to be thicker and the thickness thereof at the non-collision portion is to be thinner.
摘要翻译：在燃料喷射阀中，旨在提高阀关闭响应性，同时保持固定芯和活动芯之间的碰撞部分的耐久性（抗磨损性）和阀开启响应性。燃料喷射阀中的可动芯106的环形端面106A设置有碰撞部分106C，该碰撞部分106C当可动芯被磁性地吸向静止芯侧时与固定芯107碰撞;以及非碰撞部分，在两个芯部之间的在碰撞部分的外侧或内侧区域处的流体间隙。固定芯和活动芯的环形端面涂覆有具有抗磨损性的镀层30,31，并且固定芯和活动芯的至少一个镀层形成为使得其厚度在碰撞部分106C将变厚并且在非碰撞部分处的厚度变薄。

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