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    • 81. 发明授权
    • Fuel injector having a ferromagnetic coil bobbin
    • 燃料喷射器具有铁磁线圈架
    • US06851622B2
    • 2005-02-08
    • US10038623
    • 2002-01-08
    • Sims B. DeméréRobert McFarlandDennis Bulgatz
    • Sims B. DeméréRobert McFarlandDennis Bulgatz
    • F02M51/00F02M51/06F02M51/08F02M61/16F02D1/06
    • F02M51/0667F02M51/005F02M51/0614F02M51/0682F02M61/166F02M61/168H01F7/1607Y10S239/90
    • A fuel injector for use with an internal combustion engine. The fuel injector can include a tube assembly, an armature assembly, a working air gap, a coil, and a housing. The tube assembly has a longitudinal axis and includes a non-magnetic tube having a first end and a second end, and a pole piece disposed inside the non-magnetic tube intermediate the first and second ends. The armature assembly is disposed within the tube assembly between the pole piece and the first end. The armature assembly includes an end face resiliently biased away from the pole piece. The working air gap separates the end face and the pole piece when the end face is biased away from the pole piece. The coil is connectable to an electrical power source and operable to displace the end face toward the pole piece against the resilient bias on the armature assembly. The housing is positioned adjacent the working air gap and supports the coil on the tube assembly. The housing extends around the coil and has a ferromagnetic inner wall extending between the coil and the non-magnetic tube. The ferromagnetic inner wall has an opening with a width that is substantially less than the length of the coil as measured parallel to the longitudinal axis.
    • 一种与内燃机一起使用的燃料喷射器。 燃料喷射器可以包括管组件,电枢组件,工作气隙,线圈和壳体。 管组件具有纵向轴线并且包括具有第一端和第二端的非磁性管,以及设置在第一和第二端的中间的非磁性管内的极靴。 电枢组件设置在电极组件和第一端之间的管组件内。 衔铁组件包括弹性偏压远离极片的端面。 当端面偏离极片时,工作气隙将端面和极片分开。 线圈可连接到电源并且可操作以克服电枢组件上的弹性偏压将端面朝向极片移动。 壳体位于工作气隙附近,并将线圈支撑在管组件上。 壳体围绕线圈延伸并且具有在线圈和非磁性管之间延伸的铁磁内壁。 铁磁内壁的开口宽度基本上小于平行于纵向轴线测量的线圈长度。