Abstract: An injection device for injecting fuel into a combustion chamber, includes: a housing rigidly connected to the combustion chamber, an injection part rotatably connected to the housing and drivable by an actuator in order to rotate with respect to the housing about a central axis, a supply conduit fluidically connected to the combustion chamber for the pressurized introduction of a fuel into the combustion chamber and which includes a fluid-tight coupling between the housing and the injection part; an injection nozzle rigidly connected to the injection part and which includes an atomizer having an atomizer opening fluidically connected to the supply conduit for introducing fuel into the combustion chamber, whereas the injection nozzle rotates, and at least one further supply conduit for the pressurized introduction of a fluid into the combustion chamber.