Algorithmic Maintenance of a Diesel Engine Electronic Fuel Feed Controller by Criterion of the Content of Soot in Exhaust Gas 2007-01-0973

The feature of offered algorithm is that it allows, without record and analysis of the display diagram, to estimate a running cycle of a diesel engine parameters which characterize ecological and economic performances. The mathematical model described in report allows to determine connection of coefficient of filling, pressure and temperature of air boost, factor of excess of air with effectiveness ratio of combustion and contents of soot in exhaust gas and to take into account this connection at a choice initial data for control fuel feed or for elaboration of diesel engine dynamic model. The algorithm incorporated, for example, in the microcontroller of an electronic fuel feed controller allows analyzing the sensors data and theoretically determine of smoke amount in the exhaust gases for chosen cycle of fuel feed. The restriction of smoke is possible by criterion dD/dG_T, where D - contents of soot in exhaust gas and G_T - fuel cycle submission under the program-adaptive schema. In example, the calculated values of the soot content in exhaust gases are compared with the experimental data for various models of diesel engines. Convergence results are good.