Methods are provided for estimating the NO x content of exhaust gas produced by an internal combustion engine (10). The method includes determining one or more operating parameters. The method further includes applying the determined operating parameter(s)...

A process for providing a real-time estimation of in-cylinder NOx production rates during a combustion process in an internal combustion engine. The process employs a model that takes into account fundamental in-cylinder variables such as temperature, pres...

The families record the relationships between the operational phase of the engine, e.g., idling, normal operation etc. and the factors which influence it, e.g. speed, Lambda value, load, air temperature etc. determined experimentally in full for each opera...