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    • 1. 发明授权
    • Fuel injection valve and its manufacturing method
    • 燃油喷射阀及其制造方法
    • US5944262A
    • 1999-08-31
    • US19030
    • 1998-02-05
    • Masaki AkutagawaEiji IwanariYukio SawadaHideto Takeda
    • Masaki AkutagawaEiji IwanariYukio SawadaHideto Takeda
    • F02M51/06F02M61/16F02M51/00
    • F02M61/168F02M51/0671
    • A fuel injection valve, having an injector pipe containing a needle valve therein, an electromagnetic coil for driving the needle valve and a yoke forming a magnetic circuit, intermittently injects fuel fed from the top of the injection valve to an internal combustion engine according to longitudinal movement of the needle valve. The injector pipe is made of a compound magnetic material and formed into a single piece by a drawing process, the single piece including two magnetic portions and a non-magnetic portion interposed between two magnetic portions. The non-magnetic portion intercepts magnetic flux flow between the magnetic portions. The electromagnetic coil is molded by resin together with other components, and the yoke is formed separately. The yoke is mounted on the molded coil from its lateral side, making an assembly including the coil and the yoke. The injector pipe is inserted into a bore formed in the coil, and then the yoke is connected to the injector pipe by welding. The yoke and the molded coil are designed so that they are automatically positioned at a right place when they are assembled. Thus, the fuel injection valve is easily assembled in a simple process and at a low cost.
    • 一种燃料喷射阀,其具有在其中包含针阀的喷射管,用于驱动针阀的电磁线圈和形成磁路的磁轭,间断地将从喷射阀的顶部供给的燃料喷射到根据纵向的内燃机 针阀运动。 喷射管由复合磁性材料制成,并通过拉丝工艺形成单件,单件包括两个磁性部分和插入在两个磁性部分之间的非磁性部分。 非磁性部分截取磁性部分之间的磁通量。 电磁线圈与其他部件一起由树脂模制,轭形成分开。 轭从其侧面安装在模制线圈上,从而构成包括线圈和轭的组件。 注射管被插入到形成在线圈中的孔中,然后通过焊接将轭连接到喷射管。 轭和模制线圈被设计成使得它们在组装时被自动定位在正确的位置。 因此,燃料喷射阀以简单的方法容易地组装并且以低成本。
    • 7. 发明授权
    • Electromagnetically actuated injection valve
    • 电磁致动注射阀
    • US5918818A
    • 1999-07-06
    • US861062
    • 1997-05-21
    • Hideto Takeda
    • Hideto Takeda
    • F02M51/06F16K31/06B05B1/30F16K31/02
    • F16K31/0655F02M51/061F02M51/0642F02M51/0657F16K31/0651F16K31/0665
    • An injection valve with an injection hole includes a yoke, a fixed core surrounded by the yoke, a non-magnetic stopper between the yoke and the fixed core, a valve for opening and closing the injection hole, a movable core, whose axial movement is limited by the stopper, and an electromagnetic coil for attracting (when energized) the movable core to the fixed core. The movable core contacts the stopper and an air gap is formed between a surface of the movable core and at least one of the yoke and the fixed core. Since the movement of the movable core is limited by the stopper, the amount of movement by the movable core and the air gap formed between the surface of the movable core and at least one of the yoke and the fixed core are easily adjusted by adjusting the thickness of the stopper.
    • 具有喷射孔的喷射阀包括磁轭,由磁轭围绕的固定磁芯,磁轭和固定磁芯之间的非磁性止动器,用于打开和关闭注入孔的阀,可动磁芯,其轴向运动是 由止动器限制,以及用于将可动铁芯吸引(通电时)到固定铁心的电磁线圈。 可动铁芯接触止动件,并且在可动铁芯的表面与轭铁和固定铁心中的至少一个之间形成气隙。 由于可动铁芯的移动受到止动器的限制,因此可动铁芯的移动量和可动铁芯的表面与轭铁和固定铁芯中的至少一个之间形成的气隙容易调节 塞子的厚度。