The present invention relates to an injection device, comprising a fuel pump (20a), a pressure controller (20b), an injector (20c), and an air actuator (20d), characterized in that the fuel pump (20a), the pressure controller (20b), the injector (20c), and the air actuator (20d) are integral parts of an injection module (2), and the injection device further comprises exactly one actuator which simultaneously activates the fuel pump (20a) and the air actuator (20d), wherein the actuator comprises a coil (21), a first armature (22), and a second armature (23), and a first working gap (S1) is provided on the first armature (22) and a second working gap (S2) is provided on the second armature (23), and wherein a stationary seal (36) is disposed between the first armature (22) and the second armature (23) in order to seal a medium controlled by the first armature from a medium controlled by the second armature.