Assessment of ecological and chemical efficiency of exploitation process of reciprocating ICE of vehicle with concideration of emission of sulphur oxides, benzo(a)pyrene and polycyclic aromatic hydrocarbones

Abstract

In this study the previously proposed by the author techniques of determination of magnitudes of mass hourly emissions of sulphur oxides, benzo(a)pyrene and polycyclic aromatic hydrocarbons in diesel engine exhaust gases flow have been improved. Distributions of magnitudes of such emissions on operational regimes field of 2Ch10.5/12 autotractor diesel engine and on regimes of standardised steady testing cycle ESC were obtained. The mathematical apparatus and technique of application of index of ecology-chemical evaluation of ICE of Prof. P. M. Kanilo have been improved as the alternative for complex fuel-ecological criterion of Prof. I. V. Parsadanov. Distributions of magnitudes of such indicator of ecological safety level of power plants with reciprocating ICE exploitation process on operational regimes field of 2Ch10.5/12 autotractor diesel engine and on regimes of standardised steady testing cycle ESC were obtained together with its middle exploitational magnitude. It is established that, in case of considering of values of mass hourly emission of sulphur oxides, benzo(a)pyrene and other PAH in the criteria-based assessment of efficiency of exploitation process of vehicles with diesel ICE with using of mathematical apparatus of the integral indicator of ecological-chemical evaluation, the minimum efficiency is characterized by the maximum torque regime (F = 1.029), and by the maximum efficiency – regime with low effective power (F = 0.091), the regime of nominal effective power – by average efficiency (F = 0.500), and the minimal idle regime (F = 0.178) – by high efficiency. Middle exploitational magnitude of index F for the ESC standardised steady testing cycle and 2Ch10.5/12 diesel engine is 0.373.