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    • 2. 发明专利
    • High speed fuel injection valve
    • 高速燃油喷射阀
    • JPS58204961A
    • 1983-11-29
    • JP8643982
    • 1982-05-24
    • Nissan Motor Co Ltd
    • HONMA MASAHIROINOKUCHI IWANE
    • F02M51/06F02M51/08
    • F02M45/10F02M51/0603F02M2051/08
    • PURPOSE:To secure the sufficient lift of a fuel injection valve, by making full use of bending vibrations in plural vibrating reeds installed between the outer surface of a piezoelectric body and the wall inner surface of a valve body, in case of the fuel injection valve using the piezoelectric body. CONSTITUTION:A rod 20 securing a needle 22 to its tip end is locked in a rectangular direction toward the thickness of a piezoelectric body 18, and the tip end of each plural locked vibrating reeds 27 tilted to the thickness direction is closely pressed to the wall inner surface of a valve body, while the piezoelectric body 18 is resiliently energized in a direction of valve oening and set in valve closing motion when a high frequency electric field is given to the piezoelectric body 18. Like this, by impressing the high frequency electric field to the piezoelectroc body 18, these vibrating reeds perform their bending vibrations, making the valve body open, so that the sufficient speedy response and lift of a fuel injection valve can be secured.
    • 目的:为了确保燃油喷射阀的充分提升,通过充分利用安装在压电体外表面和阀体壁面之间的多个振动片的弯曲振动,在燃油喷射阀 使用压电体。 构成:将针头22固定到其前端的杆20朝向压电体18的厚度方向被锁定,并且沿着厚度方向倾斜的多个锁定的振动片27的顶端被紧密地压向壁 阀体的内表面,同时当压电体18向高压电场施加高压电场时,压电体18沿阀门开启方向弹性地通电并设定为闭阀运动。这样,通过施加高频电动 这些振动簧片进行弯曲振动,使阀体打开,从而能够确保燃料喷射阀的充分的快速响应和升程。
    • 10. 发明专利
    • Fuel injection device
    • 燃油喷射装置
    • JP2006029109A
    • 2006-02-02
    • JP2004204931
    • 2004-07-12
    • Denso Corp株式会社デンソー
    • ISHIZUKA KOJIFUKUSHIMA TAKAYUKINAKADA KENICHIRO
    • F02D41/40F02D41/38F02D45/00F02M45/02F02M47/00F02M47/02
    • F02M47/027F02D41/1401F02D41/3809F02D41/402F02D2041/1433F02D2200/0625F02D2200/063F02M45/10F02M63/0225Y02T10/44
    • PROBLEM TO BE SOLVED: To solve the problem that more man-hours for adaptation are required since a drive period Tqf is calculated by conventionally utilizing an independent map for each injection in a multi-injection in order to prevent the injection quantity from being changed by pulsing or the like. SOLUTION: An ECU calculates drive period Tqf on the basis of a geometrical figure of a lift amount having an area corresponding to a required injection amount Q. When acquiring the geometrical figure of the lift amount, a rising waveform of a needle is divided into the first, second and third rising periods Tqr1, 2, 3. A lift rising change at each period is acquired by simulation with the primary or secondary expression facilitating computation. A lift lowering change at a third delay period Tde2 is also acquired by simulation with the primary expression. By so doing, highly accurate geometrical figure of the lift amount can be drown so as to obtain highly accurate drive period Tqf while suppressing computation load without requiring huge quantities of adequate data in the injection stage. When a specification of the injector is altered, adequate processing can be executed by changing a compatible value derived from the alteration. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了解决需要更多的适应时间的问题,因为通过传统地利用多次喷射中的每次喷射的独立图来计算驱动周期Tqf,以防止喷射量 通过脉冲等改变。 解决方案:ECU根据具有对应于所需喷射量Q的面积的提升量的几何图形来计算驱动周期Tqf。当获取提升量的几何图形时,针的上升波形为 分为第一,第二和第三上升周期Tqr1,2,3。通过利用初级或次级表达式的计算,通过模拟获得每个周期的升力升高变化。 在第三延迟时段Tde2的升降降低变化也通过用初级表达式的模拟获得。 通过这样做,可以淹没提升量的高精度几何图形,以便在抑制计算负荷的同时获得高精度的驱动周期Tqf,而不需要在注入阶段中大量的足够的数据。 当注射器的规格改变时,可以通过改变从改变得到的兼容值来执行适当的处​​理。 版权所有(C)2006,JPO&NCIPI