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    • 5. 发明申请
    • FUEL-INJECTION VALVE AND PROCESS FOR ITS MANUFACTURE
    • 燃油喷射阀及其制造工艺
    • WO1992003653A1
    • 1992-03-05
    • PCT/DE1991000589
    • 1991-07-17
    • ROBERT BOSCH GMBHVOGT, DieterREITER, FerdinandMAIER, Martin
    • ROBERT BOSCH GMBH
    • F02M61/18
    • F02M61/161F02M51/0682F02M61/168F02M61/1853Y10T29/49421Y10T29/49425Y10T29/49771
    • In prior art fuel-injection valves, the valve-needle stroke can be adjusted for example by grinding down one end of the valve-nozzle body or by varying the penetration depth of the valve-seat body inserted in a longitudinal aperture in the valve-seat support and subsequently rigidly secured to the valve-seat support. This method of adjustment is not possible with assembled valves however. If the valve-seat body is pressed into the longitudinal aperture, there is a danger of clip formation. In the new fuel-injection valve, a valve assembly comprising the valve-seat body (18) and the perforated body (22) joined to it is inserted in the longitudinal aperture (3) in the valve-seat support (1) and rigidly secured to it, the depth of insertion determining the initial setting of the valve-needle stroke. Exact adjustment of the needle stroke can be done with the assembled valve by bending the part of the valve located between the points of attachment (24, 30) of the perforated body (22) to the valve-seat support. The fuel-injection valve proposed and the method for its manufacture are particularly suitable for use in fuel-injection systems in mixture compressing spark ignition engines.
    • 在现有技术的燃料喷射阀中,可以例如通过研磨阀喷嘴体的一端或改变插入阀 - 阀体的纵向孔中的阀座体的穿透深度来调节阀针行程。 座椅支撑件,随后刚性地固定到阀座支撑件上。 然而,这种调整方法是不可能的。 如果阀座主体被压入纵向孔,则存在夹子形成的危险。 在新的燃料喷射阀中,包括阀座体(18)和与其接合的穿孔体(22)的阀组件插入阀座支撑件(1)中的纵向孔(3)中并且刚性地插入 固定在其上,插入深度确定阀针行程的初始设定。 可以通过将位于穿孔体(22)的连接点(24,30)之间的阀的部分弯曲到阀座支撑件来使组装的阀完全调整针冲程。 提出的燃料喷射阀及其制造方法特别适用于混合压缩火花点火发动机的燃料喷射系统。