Fuel injection device

The invention relates to a fuel injection device. A fuel injection device is provided with a fuel injection valve at a position corresponding to an intake port in an internal combustion engine. The fuel injection valve is provided with a main body and a valve needle provided inside the main body. The fuel injection valve is located closer to a piston of the internal combustion engine than the intake port. Between the valve seat of the fuel injection valve and the combustion chamber of the internal combustion engine, there is a separate fuel injection passage for flowing a gaseous fuel. For a flow cross-section of the gaseous fuel in the fuel injection passage, the flow cross-section of the gaseous fuel on the side close to a piston of the internal combustion engine is larger than the flow cross-section of the gaseous fuel on the side close to a spark plug of the internal combustion engine over a predetermined length in the direction of extension of the fuel injection passage. 本发明涉及一种燃料喷射装置。燃料喷射装置在内燃机中的与进气口之间对