Method for reducing NOx emissions in automobile exhaust

摘要

The method involves calculating set pressure or set temperature in a storage chamber (8) according to parameters of a motor vehicle, where the parameters depend on moving type of the motor vehicle during operation of the motor vehicle for a predetermined moving period. The set pressure or set temperature is compared with the pressure or temperature measured by a pressure- or temperature-measuring device (6a) during operation of the motor vehicle after moving period. The chamber is heated if the pressure or temperature at interior of the chamber is lower than set pressure or set temperature.