| 摘要 |
<p>The invention relates to a control valve (16) for controlling the movement of the needle (42) of a fuel injector (10), the valve (16) comprising a coil (18) which is attached to the housing (12) of the injector, which housing engages with an armature (20, 22, 26) which can be moved between an open position and a closed position. The armature (20, 22, 26) comprises a magnetic plate (22), through the centre of which a rod (26), which forms a valve piston, extends perpendicularly to the plate (22) to a remote end (30). Said piston (26) slides into a bore in the injector housing, the movements of the armature (22) and of the piston (26) opening or closing channels in which pressurised fuel flows. The armature (20, 22, 26) is provided with a device for quickly discharging the fuel which is captive between the coil (18) and the plate (22).</p> |
