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    • 5. 发明授权
    • Electrically controlled fuel injection system
    • 电控燃油注入系统
    • US5239968A
    • 1993-08-31
    • US996338
    • 1992-12-23
    • Nestor Rodriguez-AmayaFriedrich WeissAlfred Schmitt
    • Nestor Rodriguez-AmayaFriedrich WeissAlfred Schmitt
    • F02M41/12F02M57/02F02M59/26F02M59/36F02M59/46F02M63/00
    • F02M59/366F02M59/466F02M2200/304
    • The invention relates to an electrically controlled injection system for internal combustion engines, in which a magnet valve that is open when without current is used to control the fuel quantity of a high-pressure chamber in the injection pump. A pressure chamber communicates via a pressure conduit directly with the pump work chamber of the high-pressure pump, and a connection from the pressure chamber to a diversion chamber is controlled by a movable valve member via a valve seat. A diversion bore, and a pressure equalization piston is disposed on the valve member, via a neck, on a side remote from the magnet, so that approximately the same pressure as on the magnet side of the movable valve member prevails on the face end of this pressure equalization piston. The chambers on both face ends of the valve member communicate with one another through a connecting conduit, and a further connecting conduit leads from the magnet chamber to a leakage chamber. In one feature of the invention, first and second throttles are disposed upstream of the face end chamber and at the end of the connecting conduit, so that the valve member is embedded in a hydraulic column of equal pressure.
    • 本发明涉及一种用于内燃机的电控喷射系统,其中使用无电流时打开的磁阀来控制喷射泵中的高压室的燃料量。 压力室通过压力导管直接与高压泵的泵工作室连通,并且从压力室到转向室的连接通过阀座由可动阀构件控制。 分流孔和压力平衡活塞通过颈部在远离磁体的一侧设置在阀构件上,使得与可动阀构件的磁体侧大致相同的压力在 这个压力平衡活塞。 阀构件的两个端部上的腔室通过连接导管彼此连通,另外的连接导管从磁体室引导到泄漏室。 在本发明的一个特征中,第一和第二节流件设置在面端室的上游并且在连接导管的端部处,使得阀构件嵌入在等压的液压柱中。