Internal combustion engine i.e. diesel internal combustion engine, operating method for motor vehicle, involves detecting combustion misfire when time difference is larger than preset threshold value that is larger than another value

摘要

The method involves determining cylinder-individual segment times of a crankshaft in each of two cylinders. An unequal distribution of an air/fuel ratio is detected before combustion processes in combustion chambers, depending on comparison of the determined times. A determination is made while comparing a segment time difference between the times. The unequal distribution of the air/fuel ratio is detected, when the difference is larger than a preset threshold value. A combustion misfire is detected, when the difference is larger than another preset value that is larger than the former value. An independent claim is also included for a device for operating an internal combustion engine.