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    • 2. 发明授权
    • Electromagnetic fuel injector
    • 电磁燃油喷射器
    • US5012982A
    • 1991-05-07
    • US361336
    • 1989-06-05
    • Masahiro SoumaTokuo KosugeTohru IshikawaHisanobu KanamaruMizuho YokoyamaYasuo Kamituma
    • Masahiro SoumaTokuo KosugeTohru IshikawaHisanobu KanamaruMizuho YokoyamaYasuo Kamituma
    • F02M51/06F02M51/08F02M61/14F02M61/16F02M63/00
    • F02M61/168F02M51/0682F02M61/145F02M61/166F02M2051/08F02M2200/02F02M2200/505F02M2200/9038Y10S239/90
    • An electromagnetic fuel injector comprising: a movable member with a valve body provided at one end and an armature made of a magnetic material provided at the other end; a cylindrical core made of a magnetic material, the core being disposed in such a manner that the distal end thereof opposes the armature; an electromagnetic coil disposed around the cylindrical core for producing an electromagnetic force between the cylindrical core and the armature when the coil is energized; and guide sections for guiding the movement of the movable member in the axial direction, the guide sections being disposed in the vicinities of the valve body and the armature of the movable member. The guide section provided in the vicinity of the armature comprises a sliding member made of a non-magnetic material and disposed between the armature and the core. The colliding surface of the core and the armature is coated with a nickel layer which serves as an impact absorbing layer and a chromium oxide layer which serves as a surface hardening layer. A seal ring is provided between the outer periphery of a plug portion of the core and the inner periphery of a casing. The yoke is coupled to the core at a location which is closer to a fuel outlet from the seal ring.
    • 一种电磁燃料喷射器,包括:具有设置在一端的阀体的可动构件和设置在另一端的由磁性材料制成的电枢; 由磁性材料制成的圆柱形芯,所述芯以使其远端与电枢相对的方式设置; 设置在所述圆筒形芯周围的电磁线圈,用于当所述线圈通电时在所述圆柱形芯和所述电枢之间产生电磁力; 以及用于引导可动构件在轴向方向上的运动的引导部分,引导部分设置在阀体和可动构件的电枢附近。 设置在电枢附近的引导部包括由非磁性材料制成并设置在电枢和芯之间的滑动构件。 芯和电枢的碰撞表面涂覆有用作冲击吸收层的镍层和用作表面硬化层的氧化铬层。 密封环设置在芯的插头部分的外周和壳体的内周之间。 磁轭在距密封环更靠近燃料出口的位置处联接到磁芯。
    • 3. 发明授权
    • Method of producing an electromagnetic fuel injector
    • 电磁燃料喷射器的制造方法
    • US4974312A
    • 1990-12-04
    • US374135
    • 1989-06-30
    • Mizuho YokoyamaHisanobu KanamaruTokuo Kosuge
    • Mizuho YokoyamaHisanobu KanamaruTokuo Kosuge
    • F02M51/06F02M51/08F02M61/16
    • F02M61/168F02M51/0682Y10S239/90Y10T29/4902Y10T29/49901Y10T29/49934
    • An electromagnetic fuel injector suitable for use in an automotive engine has a cylindrical yoke constituting a body of the fuel injector, a solenoid coil and a stator core fixedly received in the cylindrical yoke, a movable core adapted to be attracted by the stator core, and a movable valve responsive to the movable core so as to be moved into and out of contact with a fuel injection valve seat in accordance with the balance of force between an electromagnetic force produced by the solenoid coil and a force produced by a spring received in the stator core. The stator core is coaxially received in the cylindrical yoke with a portion of the material of either one of the stator core and the yoke being plastically deformed into an annular groove formed in the opposing surface of the other of the stator core and the yoke. In consequence, the stator core and the yoke are coupled to and held on each other by the contracting force produced by the plastically deformed material in and around the annular groove.
    • 适用于汽车发动机的电磁燃料喷射器具有构成燃料喷射器主体的圆柱形轭铁,固定地容纳在圆柱形轭铁中的螺线管线圈和定子铁芯,适于被定子铁心吸引的可动铁芯,以及 根据由螺线管线圈产生的电磁力与由所述螺线管线圈产生的弹簧产生的力之间的力的平衡,能够响应于所述可动铁芯移动进入和不与燃料喷射阀座接触的可移动阀 定子铁芯。 定子芯同轴地容纳在圆柱形磁轭中,其中定子铁芯和磁轭之一的材料的一部分塑性变形成形成在另一个定子铁芯和磁轭中的相对表面中的环形槽。 因此,定子铁芯和磁轭通过在环形槽内和周围的塑性变形的材料产生的收缩力彼此联接并彼此夹持。