Abstract: A multi-cylinder internal combustion engine with at least one carburettor, and at least one intake manifold coordinated to the latter as well as to the cylinder, and a cam control by which the inlet valves open only after the closing of the outlet valves. A device is provided which seals the inlet valve at the cylinder head on the inlet side, and at least one flutter valve is disposed in the intake manifold coordinated to each cylinder or cylinder pair, and a fuel outlet of the carburettor is regulatable from a nozzle.