Air fuel ratio recording method e.g. for individual cylinders of combustion engines, involves determining scanning crankshaft angle related to reference position of piston of respective cylinders and recording measuring signal

摘要

The method involves determining a scanning crankshaft angle (CRKSAMP) related to a reference position of the piston (24) of respective cylinders (Z1-Z4) and recording the measuring signal dependent on an air fuel ratio in the respective cylinder. The measured signal of a scanning crankshaft angle is recorded and a respective cylinder is assigned. The scanning crankshaft angle is determined depending whether the air fuel ratio in the respective cylinder corresponds to approximately stoichiometric air fuel ratio or not.