| 摘要 |
A fuel injector for injecting fuel into a combustion chamber of an engine during an infection sequence, comprising: an injector body having an injector orifice 108; and means disposed in the injector body for injecting pressurized fuel through the orifice into the combustion chamber at a selectable point in the injection sequence including a check 84 having first and second check ends 112, 114 and movable between an open position at which fuel is injected into the combustion chamber and a closed position at which the flow of pressurized fuel into the combustion chamber is blocked and means for selectively applying either a low fluid pressure or a high fluid pressure directly to each of the first and second ends 112, 114 to move the check between the open and closed positions. Fuel may be supplied to the injector at low pressure and means, eg including a plunger (110,fig.3) may be provided to pressurize the fuel.
|
