Abstract
Road transport may be deemed a strategic branch of modern economy. Unfortunately, a rapid increase in the number of on-road motor vehicles entails some negative consequences as well, for instance, excessive concentration of exhausts produced by engines which results in deterioration of air quality. EURO emission standards which define acceptable limits for exhaust emissions of power units is an example of an activity performed in attempt to improve air quality. The EURO standard defines permissible amount of exhausts produced by a vehicle. Presently new units are examined through NEDC test. For the purpose of this thesis, a virtual test stand in a form of a computer simulation of a chassis dynamometer was used to simulate emission of a diesel engine (compression-ignition engine) in the NEDC test. Actual parameters of the 1.3 MultiJet engine of the Fiat Panda passenger car of 2014 were applied in the model. The simulation was carried out in the Matlab Simulink environment. The simulation model of the Fiat Panda passenger car enables the designation of the emission waveform for all test stages which corresponds to the values received during an approval test in real-life conditions.
Highlights
Air pollution caused by excessive exhaust emission from vehicle engines constitutes a serious problem, which has been growing for years
Low prices and average level of wealth of society contribute to the increase of the number of vehicles in poor technical condition which frequently fail to meet emission standards provided for their years of production [3]
Matlab Simulink environment facilitates the creation of models and simulation of dynamic elements operation without the need to use complicated mathematical correlations;
Summary
Air pollution caused by excessive exhaust emission from vehicle engines constitutes a serious problem, which has been growing for years. Low prices and average level of wealth of society contribute to the increase of the number of vehicles in poor technical condition which frequently fail to meet emission standards provided for their years of production [3]. Harmful substances produced by internal combustion engines of power units include: hydrocarbons, nitrous oxides, carbon oxides, sulphur oxides, particulates, aldehydes and heavy metals. Such substances are toxic to the natural environment, the need to improve air quality is more and more emphasised [2]
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