combustion engine 1 with an injection system in which case the internal combustion engine 1 is constructed in a conventional way and is therefore only shown diagrammatically the internal combustion engine 1 is controlled by an electronic control unit 2 in which case the control unit 2 for example specifies the moment of injection as well as the duration of injection of the injection system the control unit 2 evaluates the measuring signals of a mass air flow sensor 3 as well as a lambda sensor 4 as input signals in which case the mass air flow sensor 3 is arranged in an intake tract 5 of the internal combustion engine 1 while the lambda sensor 4 is located on the outlet side of the internal combustion engine 1 in an exhaust gas duct 6 in addition a throttle valve 7 is also arranged in the intake tract 5 of the internal combustion engine 1 said throttle valve controlling the mass air flow sensor sucked in or drawn in by the internal combustion engine 1 and is set by means of the control unit 2 moreover a conventional three way catalytic converter 8 is arranged in the exhaust gas duct 6 a fuel tank 9 is provided for the fuel supply which is connected to the internal combustion engine 1 via a fuel.