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Contribution of fuel additives to the formation of toxic pollutants in the exhaust gas of self-ignition engines

Mendyka B., Świetlik J., Budkiewicz A., Walkowiak W., Kolanek Cz.

Environment Protection Engineering

2006

Vol. 32, nr 3

11-16

One of the available solutions to the problem of how to abate toxic car emissions is the addition of reducing agents to the fuel used. The aim of the study was to assess (on the basis of quantitative and qualitative analyses of acrolein, formaldehyde and benzene) the effect of diesel oil additives (water emulsion, ethyl alcohol, propane-butane mixture) on the toxicity of the pollutants present in the exhaust gas from a self-ignition engine. The addition of water emulsion accounted for a rise in the concentrations of all pollutants and for the increase in toxicity during idle running. Ethyl alcohol and the propane-butane mixture had a beneficial effect on the reduction in the overall concentration of pollutants, as well as (to a greater extent) on the decrease in the toxicity of the exhaust gas. It has been found that the analyses of car emissions must include not only the concentrations of particular pollutants, but also their toxicity.

Jednym ze sposobów zmniejszenia emisji toksycznych zanieczyszczeń w spalinach jest stosowanie dodatków do paliw. Zbadano, jaki wpływ mają dodatki do oleju napędowego (emulsja wodna, alkohol etylowy oraz mieszanina propan-butan) na toksyczność spalin z silnika o zapłonie samoczynnym. Badania oparto na jakościowej i ilościowej analizie wybranych zanieczyszczeń powietrza - akroleiny, formaldehydu i benzenu.