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Research of Nitrogen Oxides Concentrations in Exhaust Gas of Compression Ignition Engine Fuelled with Alternative Fuel

Sikora Mieczysław, Orliński Piotr, Bednarski Mateusz

Advances in Science and Technology. Research Journal

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2021

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Vol. 15, no 2

75--83

EN

The research was divided into two stages. The first stage of work was to perform empirical research using the Perkins engine. The test stand was equipped with an exhaust gas composition analyzer, a pressure sensor enabling measurement of pressure in the engine cylinder and a crankshaft position sensor. This stage of research was realized for diesel and UCOME fuel. The second stage was a simulation test. The Zeldowicz model of thermal NO formation in compression ignition engines was used for calculations. Theoretical methods were compared with the results obtained in empirical tests. It was found that the most similar results of tests when powering the engine with UCOME fuel were obtained thanks to the GRI-MECH 3.0 (GM3) method. On the basis of this method, coefficients of the reaction rate of NO formation in an internal combustion engine, which is powered by the higher generation alternative fuel (Sikora et al. (S) method) were developed. For the calculation tests the values of the experimentally determined pressures were used. The proposed method can be used in simulation tests of a diesel engine running on FAME fuels with similar physical and chemical properties as the UCOME fuel. This will significantly reduce the costs of such tests, as some empirical tests can be eliminated by the conclusions of the simulation tests.

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Charakterystyka zanieczyszczenia powietrza atmosferycznego tlenkami azotu na obszarze aglomeracji warszawskiej ze szczególnym uwzględnieniem Ursynowa

Rozbicka K.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2007

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Vol. 16, No. 1

62--73

EN

The aim of this work was the characteristic of spatial and temporary distribution of nitrogen oxides concentration (NO2, NO) from 10 monitoring air pollution stations in Warsaw agglomeration. The measurements of 1-hour NOx (NO2, NO) concentration data were used. The results of analysis mean annual value of NO2 concentration in regarding stations situated in rural areas and Warsaw is included in 8,4 μg⋅m-3 (for Granica station) and 57,9μg⋅m-3 (for Komunikacyjna). Permissible concentration increased to tolerance level (52μg⋅m-3) for this period was overcome in Komunikacyjna station. In terms of Komunikacyja station concentration values are greater than values for reference stations more than twice (for Jarczew) and more than 20 times (for Puszcza Borecka). The aim of this work was the characteristic of spatial and temporary distribution of nitrogen oxides concentration (NO2, NO) from 10 monitoring air pollution stations in Warsaw agglomeration. The measurements of 1-hour NOx (NO2, NO) concentration data were used. The results of analysis mean annual value of NO2 concentration in regarding stations situated in rural areas and Warsaw is included in 8,4 μg⋅m-3 (for Granica station) and 57,9μg⋅m-3 (for Komunikacyjna). Permissible concentration increased to tolerance level (52μg⋅m-3) for this period was overcome in Komunikacyjna station. In terms of Komunikacyja station concentration values are greater than values for reference stations more than twice (for Jarczew) and more than 20 times (for Puszcza Borecka).

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Wstępne wyniki badań nad stężeniem tlenków azotu NOx (NO, NO2) w powietrzu w Warszawie-Ursynowie

Rozbicka K.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2004

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Vol. 13, No. 1

140--151

EN

Motor vehicles release into the air NOx, which is 50-70% of all pollutants in the atmosphere of larger cities. Both car traffic and solar radiation vary in time and consequently variation of NOx concentration occur in diumal cycle and annual cycle. The paper presents introductory results of the analysis on distribution and the relationship between oxides of nitrogen concentration and the air temperature and air humidity. Average value of considered pollutants concentration for the period since 1.IV.2001 to 31.III.2002 in Ursynów-WAU assumes 15,9 μgm m-3 (40% of permissible concentration) for NO2 and for NO 5,2 μgm m-3.