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发明申请
US20060000453A1 Servo valve for controlling an internal combustion engine fuel injector 有权
用于控制内燃机燃料喷射器的伺服阀

Servo valve for controlling an internal combustion engine fuel injector
摘要：
A control servo valve (8) is housed inside the casing of an internal combustion engine fuel injector (1), and has an actuator (9), a control chamber (13) communicating with a fuel inlet (5) and with a fuel outlet passage (22), and a shutter (35) movable along an axis (3) by the actuator (9) between a closed position and an open position to close and open the outlet passage (22) respectively; the servo valve (8) also has a fixed axial rod (29) interposed between the actuator (9) and the control chamber (13); the outlet passage (22) comes out through an outer lateral surface (30) of the axial rod (29); and the shutter (35) is defined by a sleeve which slides axially on the outer lateral surface (30), and, in the closed position, closes the outlet passage (22) so as to be subjected to a zero axial resultant force by the pressure of the fuel.
摘要（中）：

控制伺服阀（8）容纳在内燃机燃料喷射器（1）的壳体内，并具有致动器（9），与燃料入口（5）连通的控制室（13）和燃料出口 通道（22）和通过致动器（9）在关闭位置和打开位置之间可沿着轴线（3）移动的快门（35），以分别关闭和打开出口通道（22）; 伺服阀（8）还具有置于致动器（9）和控制室（13）之间的固定轴杆（29）。 出口通道（22）通过轴向杆（29）的外侧表面（30）出来; 并且挡板（35）由在外侧表面（30）上轴向滑动的套筒限定，并且在关闭位置关闭出口通道（22），以便经受零轴向合力 燃料的压力。

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