Method for monitoring quiet running regulation of multi-cylinder internal combustion engine

摘要

The measurement signals, which correspond to the temperatures at the catalyser (2), are taken at the catalyser inlet and outlet. The difference between the inlet and outlet temperatures is formed and compared with a reference value. The measurement signals are formed from the inner resistances of two heated exhaust gas oxygen sensors (3,4). The reference value for monitoring the quiet running of the internal combustion engine (1) is varied by means of a functional relationship dependent upon the speed and torque of the engine.