Nitrogen oxide emission controlling method for diesel heat engine of e.g. car, involves passing combustion cycle to next combustion cycle, if estimated volumetric rate is lower than nitrogen oxides formation volumetric rate setpoint

摘要

The method involves estimating nitrogen oxides formation volumetric rate, during course of combustion cycle based on formed nitrogen oxide quantity. The estimated volumetric rate is compared with a nitrogen oxides formation volumetric rate setpoint. An anti-pollution system and/or combustion system is controlled, if the estimated volumetric rate is higher than the nitrogen oxides formation volumetric rate setpoint. The combustion cycle is passed to next combustion cycle, if the estimated volumetric rate is lower than the nitrogen oxides formation volumetric rate setpoint.