CHECKING OF THE ADEQUACY MATHEMATICAL MODEL OF THE "ENGINE - SUPPLY SYSTEM OF MIXTURE DIESEL AND BIODIESEL"

Abstract

In this article we present the results verification of adequacy the mathematical model of the system "Engine - a mixture supply system of diesel and biodiesel fuels", for which an experimental study of acceleration and deceleration of the crankshaft of a diesel engine was performed with diesel and biodiesel fuels. For the study, the sample size is calculated, which ensures the probability of not exceeding the actual error P = 0,95. According to the results of experimental studies of dispersal of diesel using diesel fuel, it was confirmed that the accuracy of conducting experimental research is sufficient to ensure the reliability of the results. Completion of the mathematical processing of the results of experimental research is the verification of adequacy the mathematical model of the system "Engine - a mixture supply system of diesel and biodiesel fuels", which was conducted by comparing calculated and experimental data. Using a mathematical model, the time of acceleration of the crankshaft of the diesel engine from the minimal rotational speed to maximal one, was calculated. Using Fisher's F criterion, the adequacy of the analytic dependencies used in the mathematical model is confirmed. Also, by comparing the data of deceleration and acceleration of the crankshaft of diesel, obtained by experiment and calculation, the adequacy of the mathematical model of the system "Engine - a mixture supply system of diesel and biodiesel fuels" has been confirmed.