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    Fuel injection valve
    1.
    发明公开
    Fuel injection valve 失效
    Kraftstoffeinspritzventil。

    公开(公告)号：EP0117603A1

    公开(公告)日：1984-09-05

    申请号：EP84300171.0

    申请日：1984-01-11

    申请人： TOHOKU MIKUNI KOGYO KABUSHIKI KAISHA

    发明人： Ohno, Yasuo Tohoku Mikuni Kogyo K.K. ,  Seino, Tadashi Tohoku Mikuni Kogyo K.K. ,  Ueno, Yukio Tohoku Mikuni Kogyo K.K. ,  Kariyama, Kenji Tohoku Mikuni Kogyo K.K. ,  Utsugi, Shinji Tohoku Mikuni Kogyo K.K. ,  Okada, Shigeo Tohoku Mikuni Kogyo K.K.

    IPC分类号： F02M51/08 ,  F02M61/12

    CPC分类号： F02M61/188 ,  F02M51/0667 ,  F02M61/18 ,  F02M61/1853 ,  F02M2051/08 ,  Y10S239/90

    摘要： This invention relates to an electromagnetic fuel injection valve having a body 1 of magnetic material, a core 4 and a hollow plunger 6, 35 disposed in the body and formed with a fuel passage 30, 31 communicating with a valve chamber 18. A ball valve 7 is secured to the end of the plunger and nestingly received in a seat member 13,33, and a solenoid coil 3 is provided for opening the ball valve 7 upon energization thereof to pass fuel through the valve.
    A guide pipe 65 is provided on the outer peripheral surface of said core 4 and extends axially beyond a proximal end thereof to said valve chamber 18, and a stop means 16, 36 is provided on said plunger 6, 36 at the valve chamber end thereof for engagement with the axially extended portion of said guide pipe 5 for limiting the stroke of said plunger 6. A divergent part-conical or spherical surface is formed at the end of the guide pipe 5 and a part-spherical surface 17 is provided on the side of the stop means 16 of the plunger 6 remote from said ball 7 for co-operation with said guide pipe end surface 17 so as to provide an automatic centering operation at the stroke end of the plunger 6, thereby preventing irregular wear of the ball valve and the seat surface to maintain the performance over an extended period of use.

    摘要翻译： 本发明涉及一种电磁燃料喷射阀，其具有磁性材料主体1，芯体4和中空柱塞6,35，其设置在主体内并形成有与阀室18连通的燃料通道30,31。 7被固定到柱塞的端部并且嵌套地容纳在座椅构件13,33中，并且提供螺线管线圈3用于在通电时打开球阀7以使燃料通过阀。 导管65设置在所述芯体4的外周表面上并且轴向延伸超过其近端至所述阀室18，并且止动装置16,36设置在所述柱塞6,36上 其阀室端部用于与所述导管5的轴向延伸部分接合，用于限制所述柱塞6的行程。在引导管5的端部处形成发散的部分圆锥形或球形表面，并且部分球形表面 17设置在远离所述球7的柱塞6的止动装置16侧，用于与所述导管端面17配合，以在柱塞6的行程端提供自动对中操作，从而防止 球阀和阀座表面的不规则磨损在长时间使用中保持性能。