Noname

Previous models of working process in piston engines are advanced in two infra-cylinder conditions are concerned with external ones, namely with the load, heat exchange and fuel supply as well as an associative module to calculate the nitric oxides formation and destruction is developed. The model structuring is performed using asymptotic technique and its adjustment to known experimental data is realized statistically. As a result improved model enables really to predict numerically the detailed chemical composition of exhaust at arbitrary engine dynamics including non-stable operation. The accuracy of the model concerned with the estimation of ecological engine characteristics is much higher with respect to one of prototypes.