US Patent 7357338 Gaseous fuel injector

A fuel injector. The fuel injector includes a fuel channel configured to receive pressurized gaseous fuel from a fuel rail, and a nozzle in fluid communication with the fuel channel. The fuel injector also includes a pintle having an opened position and a closed position, wherein pressurized gaseous fuel is delivered from the nozzle when the pintle is in the opened position and wherein introduction of the pressurized gaseous fuel is substantially blocked when the pintle is in the closed position. A support aligns the pintle with the nozzle. A pintle controller is configured to selectively move the pintle between the closed position and the opened position.