Method and device for injecting a gaseous fuel

A method for injecting a gaseous fuel for an internal combustion engine having a combustion chamber and an inlet valve assigned to the combustion chamber, the method comprising:

• determining a torque output of the combustion chamber,
• specifying a comparative value for the torque output,
• determining a difference between the torque output and the comparative value,
• providing an injection of the gaseous fuel in the combustion chamber,
• when the difference is less than a given threshold value:
• delaying a start time of the injection of the gaseous fuel,
• reducing a first injection quantity of the injection of the gaseous fuel depending on the determined difference, which is injected temporally before the inlet valve is closed, and
• increasing a second injection quantity of the injection of the gaseous fuel, which is injected temporally after the inlet valve is closed, depending on the determined difference,
• when the difference is greater than the given threshold value:
• advancing the start time of the injection of the gaseous fuel,
• increasing the first injection quantity of the injection of the gaseous fuel depending on the determined difference, and
• reducing the second injection quantity of the injection of the gaseous fuel, depending on the determined difference,
• wherein the internal combustion engine has a plurality of combustion chambers, and the determining of the torque output and the specifying of the comparative value for the torque output comprises:
• determining a particular torque output of the combustion chambers,
• determining a mean of the torque outputs of the combustion chambers, and
• using the mean as the comparative value,
• wherein the first injection quantity and the second injection quantity are injected continuously one after the other.