| 摘要 |
A directly actuated fuel injection valve is provided for injecting a gaseous fuel into a combustion chamber. The fuel injection valve comprises a valve body with a fuel cavity supplied with fuel from a fuel inlet passage. A nozzle associated with one end of the valve body comprises at least one nozzle orifice through which the gaseous fuel is injectable into the combustion chamber. In relation to the valve body, the nozzle is movable between a closed position, wherein the nozzle is seated against a sealing surface to provide a boundary between the fuel cavity and the one nozzle orifice(s), and an open position, wherein the nozzle is spaced apart from the sealing surface. A spring biases the nozzle in the closed position, and an actuator is operable to move the nozzle to the open position against the bias of the spring. A method is also provided for operating the disclosed injection valve to inject gaseous fuel into a combustion chamber by moving a nozzle relative to the valve body.
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