Features of determination of the efficiency of devices for improvement of ecological safety level of vehicles with reciprocating ICE exploitation

Abstract

This article describes the results of analysis and numerical study of prof. I.V. Parsadanov conversion formula as the one of relevant issues of the metrological features of determination of particulate matter mass hourly emission in exhaust gases flow of reciprocating internal combustion engine on the testing bench without dilution tunnel. Purpose of the study is detection of relationship between magnitudes of cleaning efficiency coefficients of particulate matter filter of diesel reciprocating internal combustion engine for unburned hydrocarbons volume concentration in exhaust gas flow and emission of particulate matters with using of conversion formula for whole diapason of changing of influencing factors. Object of the study is efficiency of operation of system of neutralization of legislative normalized pollutants in diesel internal combustion engine exhaust gases flow, namely particulate matter filter. Subject of the study is relationship between magnitudes of indicators that characterized object of the study which connected with each other by conversion formula. It was showed that the magnitudes of values of efficiency coefficients of operation of particulate matter filter of diesel reciprocating internal combustion engine for indicators of opacity and concentration of unburned hydrocarbons in exhaust gas which was obtained by direct measurements during bench motor tests and also mass hourly emission of particulate matter in exhaust gas flow which was obtained with using of the conversion formula, is not equal to each other for every individual operational regime of diesel engine. Calculation assessment and graphical illustration of relationship between magnitudes of this coefficients for unburned hydrocarbons volume concentration in exhaust gas flow and emission of particulate matter for whole diapason of changing of influencing factors was carried out. For the first time it was detected the differences between magnitudes of values of efficiency coefficients of particulate matter filter operation process of diesel internal combustion engine in pairs for mass hourly particulate matter emission with exhaust gases flow and opacity and toxicity of exhaust gases which connected with each other by conversion formula.