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    • 3. 发明申请
    • Fuel injection tip
    • 燃油喷嘴
    • US20090255998A1
    • 2009-10-15
    • US12082333
    • 2008-04-10
    • Sudhakar Das
    • Sudhakar Das
    • F02M61/18
    • F02M61/162F02B2075/125F02M61/1806F02M61/188Y02T10/123
    • An injection tip of a direct-injection injector includes an injection valve having a valve seat and a valve ball, and tangential inflow holes feeding fuel into a flow area between the ball and the seat. The fuel enters the flow area tangentially thereby causing a swirling motion of the fuel in the flow area. A symmetric velocity profile is created and the flow variations in the flow area are reduced compared to the prior art. Furthermore, the impact force of the inflowing fuel stream on the surface of the ball is reduced compared to the prior art, since in accordance with the invention the fuel stream acts tangentially on the surface of ball. The mass flow rate through the injection valve can be increased by increasing the size of the tangential inflow holes and/or the size of director holes in fluid communication with the flow area.
    • 直接喷射喷射器的喷射头包括具有阀座和阀球的喷射阀,以及将燃料供给到球和座之间的流动区域中的切向流入孔。 燃料切向地进入流动区域,从而导致燃料在流动区域中的旋转运动。 产生对称速度分布,并且与现有技术相比,流动面积中的流动变化减小。 此外,与现有技术相比,流入的燃料流在球表面上的冲击力降低,因为根据本发明,燃料流切向地作用在球的表面上。 可以通过增加切向流入孔的尺寸和/或与流动区域流体连通的引导孔的尺寸来增加通过喷射阀的质量流量。
    • 5. 发明申请
    • Fuel injector director plate having chamfered passages and method for making such a plate
    • 具有倒角通道的燃油喷射器导板及其制造方法
    • US20060226264A1
    • 2006-10-12
    • US11102037
    • 2005-04-08
    • Paul BachoJulie Galante-FoxSudhakar Das
    • Paul BachoJulie Galante-FoxSudhakar Das
    • F02M61/00B05B1/00
    • F02M61/1853F02M61/168
    • An improved fuel injection spray director plate including conically chamfered entries to the flow passages through the plate. The conical chamfer may extend part way or all the way through the plate. In a currently preferred embodiment, the chamfer extends only part way through the plate, and the remaining cylindrical portion of the passage provides desirable directional capability for the spray. Preferably, the conical chamfer axis forms an angle with the cylindrical portion axis. Preferably, a flow passage is positioned in the director plate such that the main flow direction of fuel exiting the fuel injector valve is received into the chamfer of the passage. Preferably, a second conical portion is formed in the passage between the first conical portion and the cylindrical portion.
    • 改进的燃料喷射喷射导向板,其包括经过板的流动通道的锥形倒角入口。 锥形倒角可以部分地或全部延伸穿过板。 在当前优选的实施例中,倒角仅部分地延伸穿过板,并且通道的剩余圆柱形部分为喷射提供期望的方向性能。 优选地,圆锥形倒角轴与圆柱形部分轴线形成一角度。 优选地,流动通道定位在导向板中,使得离开燃料喷射阀的燃料的主流动方向被接收到通道的倒角中。 优选地,在第一锥形部分和圆柱形部分之间的通道中形成第二锥形部分。