The paper analyses the mechanisms of creation of toxic exhaust gases, which mainly derived from inexact fuel metering and improper air-fuel mixture preparation. The paper describes the process of creating toxic components in the exhaust gases of piston engines during engine operation, and impact on the emission of these components determining the composition of the fuel mixture determined equivalence factor Φ. The principal mechanisms of formation of toxic exhaust gases, in particular nitrogen oxides, carbon monoxide and hydrocarbons, and also essential according to create each of toxic exhaust gases are the subject of the paper. Moreover, empirical relationships, by means of which it is possible to determine the time of creation of the individual components of toxic exhaust gases, are presented. For example, one of the mechanisms for prompt formation of nitrogen oxides and hydrocarbons graphic illustration of formation as a function of crank angle is described. At the conclusion, the summary and significance of information on creation mechanisms of toxic components in the exhaust gases of piston engines are presented.
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 Bowman C. T.: Control of Combustion – Generated Nitrogen Oxide Emissions: Technology Driven by Regulation Proceedings of the 24th Symposium (International) on Combustion The Combustion Institute 1993.
 Buckmaster J. Clavin P. Linan A. Matalon M. Peters N. Sivashinsky G. Williams F. A.: Combustion Theory and Modeling Proceedings of the Combustion Institute Vol. 30 pp.1-19 Pittsburgh 2005.
 Flynn P. F. et al.: The Inevitability of Engine out NOx Emissions from Spark Ingited and Diesel Engines. Proceedings of the 28th Symposium (International) on Combustion The Combustion Institute 2000.
 Heywood J. B.: Internal Combustion Engine Fundamentals New York McGraw Hill International Editions 1988.
 Jankowski A. Sandel A. Sęczyk J. Siemińska-Jankowska B.: Some Problems of Improvement of Fuel Efficiency and Emissions in Internal Combustion Engines Journal of KONES. Internal Combustion Engines. Vol. 9 No. 1-2 s. 333-356 Wyd. Permanent Committee of KONES Warszawa 2002.
 Kowalewicz A.: Podstawy procesów spalania Wyd. WNT ISBN 8320424968 2000.
 Merkisz J.: Ekologiczne aspekty stosowania silnik6w spalinowych Wydawnictwo Politechniki Poznańskiej Poznań 1995.