Actual Emissions from Urban Buses Powered with Diesel and Gas Engines

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Abstract

Due to the growing demand for traditionally sourced fossil fuels such as oil or natural gas, it became necessary to search for new unconventional sources of these raw materials. The latest results of research work targeted the exploration and exploitation of resources of yet another type of fuel - shale gas. According to estimates, Poland alone may have reserves of 5.3 billion cubic meters of natural gas, accumulated in non-conventional sources. This potential can be used in many sectors of the economy, including in transport. Thus, it became reasonable to consider the use of natural gas as an alternative power source for vehicles. The article presents the results of emissions from public buses powered by diesel fuel and compressed natural gas. The study was conducted in real traffic conditions on a regular bus line in Poznan. The measurement of toxic exhaust elements was conducted with the use of a mobile measuring system of exhaust gas analyzers PEMS (Portable Emissions Measurement System). The data obtained were used to determine the average emissions of individual components. Based on the obtained values it can be concluded that the use of different types of fuels to drive public transport vehicles leads to a reduction of air pollutants and thus to improvement in the quality of life in the city.

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Merkisz, J., Fuć, P., Lijewski, P., & Pielecha, J. (2016). Actual Emissions from Urban Buses Powered with Diesel and Gas Engines. In Transportation Research Procedia (Vol. 14, pp. 3070–3078). Elsevier B.V. https://doi.org/10.1016/j.trpro.2016.05.452

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