Fuel injection device

A fuel injection device for supplying a fuel to a compressed air from a compressor for combustion, the fuel injection device comprising:

• a pilot fuel injector located at a radially center portion of the fuel injection device and configured to inject the fuel into a combustion chamber;
• a main fuel injector located at an outer periphery of the pilot combustion injector and configured to inject a premixed air-fuel mixture of the fuel and air into the combustion chamber;
• and
• an air injection unit located between an outlet end portion of the pilot fuel injector and the main fuel injector and configured to inject the compressed air into the combustion chamber,
• the air injection unit including:
• a partition wall plate separating the air injection unit from the combustion chamber;
• a flame stabilization plate provided at a downstream side of the partition wall plate;
• a first opening provided between the flame stabilization plate and the outlet end portion of the pilot fuel injector and opened at a downstream side;
• and a second opening which is provided in the partition wall plate and through which the compressed air is supplied to an inflow space defined between the flame stabilization plate and the partition wall plate, and
• the flame stabilization plate including an inclined portion inclined in a radially outwardly and in a downstream direction with respect to an axis.