| 主权项 |
1. A fuel injector for concurrently injecting a liquid fuel and a gaseous fuel into a combustion chamber of an internal combustion engine, the fuel injector comprising:
an injector body having an interior wall defining a cavity, the cavity including a control chamber and an injection chamber, the injection chamber fluidly communicating with an outlet nozzle, and a valve seat disposed between the injection chamber and the outlet nozzle; a needle valve disposed in the cavity and having a closing surface configured to sealingly engage the valve seat when the needle valve is in a closed position, the needle valve further having a control surface fluidly communicating with the control chamber; a liquid fuel inlet defined by the injector body and fluidly communicating with the control chamber through a liquid fuel passage; a gaseous fuel inlet defined by the injector body and fluidly communicating with the injection chamber through a gaseous fuel passage; and a delivery passage defined by at least one of the needle valve and the interior wall and configured to place the control chamber in fluid communication with the injection chamber, the delivery passage having a cross-sectional area sufficient to permit flow of the liquid fuel. |
