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Increasing the efficiency of the diesel engine emission system
Stráník, Daniel ; Fridrichová, Kateřina (referee) ; Böhm, Michael (advisor)
This thesis addresses the issue of emission from heavy-duty vehicles with diesel engine. Perfect combustion in the engine is unattainable, leading to the inevitable production of pollutants during diesel combustion that must be effectively eliminated. Emission systems are used to reduce pollutants present in exhaust gases. As emission limits continue to decrease, and with the impending introduction of the new Euro VII emission standard, it is still important to reduce emission from internal combustion engines. This is particularly significant as electric and other alternative drives are not yet sufficiently developed for heavy-duty vehicles. This thesis proposes a strategy for achieving the greater reduction of pollutants and the desired increase in the efficiency of the entire emission system. For this purpose, a numerical model was created using GT-Suite software, and simulations were conducted to replicate the WHSC and WLTC class 1 driving cycles for the simulation of steady and transient states. The emissions resulting from the modified emission system were compared with those from the default system. The conclusion of the thesis is a brief description and evaluation of the results, accompanied by an outline of potential future procedures.
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