METHOD FOR THE OPERATION OF AN INTERNAL COMBUSTION ENGINE COMPRISING AN EMISSION CONTROL SYSTEM THAT INCLUDES AN SCR CATALYST

摘要

The invention relates to a method for operating an internal combustion engine comprising an emission control system that includes an SCR catalyst. In said method, in conjunction with a cold start and/or a warm-up of the internal combustion engine (1), the internal combustion engine (1) is operated using a cold start engine operation process having predefined values for predefined operating parameters of the internal combustion engine. According to the invention, an amount of nitrogen oxides (NOx) stored in the SCR catalyst (8) is estimated, and the cold start engine operation process is activated when the estimation indicates that the amount of stored NOx exceeds a predefined maximum amount of stored NOx.