Electromagnetic fuel injection valve



【課題】電磁式燃料噴射弁において,コイルの励磁時,固定コア及び可動コア間にエアギャップを残存させつゝ,弁体の開弁応答性の向上を可能にする。 【解決手段】コイルの励磁時,固定コア5及び可動コア12間にエアギャップgを保持しながら弁体の開弁限界を規定するストッパ手段14を備える電磁式燃料噴射弁において,両コア5,12の相対向する吸引面5a,12aの少なくとも一方の吸引面の一部fを,他方の吸引面に近接させるべく突出させ,発生磁束が少ないコイルの励磁初期には,磁束を上記一部の吸引面fに集中させて通す。 【選択図】 図2
PROBLEM TO BE SOLVED: To improve the valve opening responsiveness of a valve element while leaving an air gap between a fixed core and a movable core when exciting a coil, in regard to an electromagnetic fuel injection valve. SOLUTION: In this electromagnetic fuel injection valve provided with a stopper means 14 for regulating the valve opening limit of the valve elemnet while leaving an air gap g between the fixed core 5 and the movable core 12, a part f of at least one of the suction surfaces 5a and 12a of both the cores 5 and 12 is projected to come close to the suction surface of the other, and during the initial time of the excitation of the coil when the number of generated magnetic flux is small, the magnetic flux is concentrated to the one part f of the suction surface for transmission. COPYRIGHT: (C)2005,JPO&NCIPI




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Cited By (4)

    Publication numberPublication dateAssigneeTitle
    DE-102013202965-A1August 29, 2013Keihin CorporationElektromagnetisches Kraftstoff-Einspritzventil
    JP-2006307870-ANovember 09, 2006Denso Corp, 株式会社デンソー燃料ポンプ用電磁弁
    JP-2007205234-AAugust 16, 2007Denso Corp, 株式会社デンソーFuel injection valve
    JP-2013174172-ASeptember 05, 2013Keihin Corp, 株式会社ケーヒンElectromagnetic fuel injection valve