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Evaluation of the Integral toxicity of Exhaust Gases of a Diesel Engine Operating on Natural Gas and Alcohol Emulsions

The results of studies of the integral toxicity of exhaust gases of a diesel engine operating on natural gas and alcohol emulsions are presented. At the same time, the regimes characterizing the specific toxicity of a diesel engine under its operating conditions were determined, and emissions of toxic components on these regimes were determined taking into account their weight coefficients. The results of research specific toxic diesel exhaust toxicity indicators, in accordance with the requirements of UNECE Regulation No. 49, show that when a diesel engine operates on natural gas with exhaust gas recirculation and an ethanol-fuel emulsion, the content of nitrogen oxides (NOx) and carbon dioxide (CO) in the exhaust gases conforms to "EURO 3", particulate matter – "EURO 5", total hydrocarbons (CHx) – "EURO 2". When the diesel engine is running on a methanol-fuel emulsion, the content of NOx, СНx and CO in the exhaust gases complies with the standards "EURO 3", particulate matter – "EURO 5".