Exhaust gas catalyzer system starting characteristics monitoring involves using hot air quantity fed with exhaust gas into starting region during hot running up to time point as criterion for starting

摘要

The method involves feeding an air/fuel mixture to the catalyzer system and assessing the starting behavior by using the conversion capacity in a starting region (8) that affects the emission of hot air. The quantity of hot air fed with the exhaust gas into the starting region during hot running up to a time point is used as a criterion for the successive onset of conversion (starting) in downstream partial volumes (8a) of the starting region.