| 摘要 |
<p>A fuel injector comprising a valve needle (12) which is slidable within a bore (11), a surface associated with the valve needle (12) defining, in part, a control chamber (28) which communicates, through a restriction (25), with a supply passage. The fuel injector also includes an injection control valve (33) controlling communication between the control chamber (28) and a low pressure reservoir, and a drain valve (46) controlling communication between the supply passage and the low pressure reservoir. The injection control valve (33) and the drain valve (46) include respective armatures (36, 48) moveable under the influence of a common electromagnetic actuator (37). <IMAGE></p> |
