A process for detecting combustion misfires in one or more continuous misfiring cylinders

Method for detecting combustion misfires on the basis of a first signal in which non-uniformity of a rotary motion of a crankshaft of an internal combustion engine, maps, wherein a second signal is generated which is periodic and the period of the period duration of an operating cycle of the engine divided by an integer k corresponds to and which has a fixed phase relationship to the rotational movement of the crankshaft, and wherein an input feature signal is formed by modeling and filtering the second signal with a signal based on the first signal, the integer k indicating an order of input feature signal (GKR (n)), characterized, that the amounts of the input feature signal in the first order (| qlr (n) |) (with a first and second threshold KFLD (s), kflm (s) and the amounts of input feature signals of the further orders (| qkr (n) |) with each one of their order associated threshold value (kflcm (n)) are compared, and that depending on the threshold exceeded, a recognition signal for duration of misfires in one or ...