Emission control component diagnozing method for motor vehicle, involves determining expected value of pipe emission with accepted operation of engine in process by charging measured pipe emission value with characteristic data of engine

摘要

The method involves measuring a cumulated tail pipe emission value (3) for a time interval, operating interval or distance interval in different modes of operation of an internal combustion engine of a motor vehicle. An expected value of an end pipe emission (29) with accepted operation of the internal combustion engine in a standardized test process is determined by charging the measured tail pipe emission value with characteristic data of the internal combustion engine of the motor vehicle.