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    Fuel injection pump having throttled fuel path for fuel lubrication
    1.
    发明公开
    Fuel injection pump having throttled fuel path for fuel lubrication 有权
    Kraftstoffeinpritzpumpe mit gedrosseltem Kraftstoffkanal zur Schmierung

    公开(公告)号：EP1288488A1

    公开(公告)日：2003-03-05

    申请号：EP02019571.5

    申请日：2002-09-02

    申请人： Denso Corporation

    发明人： Utsumi, Yasutaka

    IPC分类号： F02M63/00 ,  F02M53/00 ,  F02M55/00

    CPC分类号： F02M63/0225 ,  F02M55/00 ,  F02M59/46 ,  F02M63/0001 ,  F02M63/0054 ,  F02M63/0056 ,  F02M2200/28 ,  F04C2/102 ,  F16K15/04

    摘要： In a fuel path (62, 71, 72) through which fuel is supplied to a pump-cam chamber (22) accommodating a drive shaft (14) and a cam (17) for lubrication, an annular throttle fuel path (67) is formed between an inside wall (61a) of a cylindrical body (61) and an outside wall of a sphere (66), when the sphere (66) is in contact with a seat (65) provided inside the cylindrical body (61). The seat (65) is provided with cuts through which the fuel flows when the sphere (66) is in contact with the seat (65). Even if foreign material (200) mixed in fuel once blocks a part of the annular throttled path (67), the blockage of the foreign material (200) is released, when the fuel flow stops and the sphere (66) leaves the seat (65), so that the fuel is always supplied sufficiently to the pump-cam chamber (22), resulting in preventing burn-in of the drive shaft (14) and the cam (17), in particular, at a high engine revolution range.

    摘要翻译： 在将燃料供给到容纳驱动轴（14）的泵凸轮室（22）和用于润滑的凸轮（17））的燃料路径（62,71,72）中，环形节流燃料通路（67） 当所述球体（66）与设置在所述圆柱体（61）内部的座（65）接触时，形成在圆筒体（61）的内壁（61a）与球体（66）的外壁之间。 座（65）设置有切口，当球体（66）与座（65）接触时燃料流过该切口。 即使在燃料中混合的异物（200）一旦堵塞环形节流路径（67）的一部分，当燃料流动停止并且球体（66）离开座椅时，异物（200）的堵塞也被释放 65），使得燃料总是充分供应到泵凸轮室（22），从而防止驱动轴（14）和凸轮（17）的燃烧，特别是在较高的发动机转速范围 。