Methodology for assessment of the spray position in selective catalytic restoration systems

Authors: Askerkо M.V.
Published in issue: #3(32)/2019
DOI: 10.18698/2541-8009-2019-3-446
Category: Power, Metallurgic and Chemical Engineering | Chapter: Heat Engines
Keywords: piston engine, diesel engine, exhaust gases, exhaust gases treatment systems, nitrogen oxides, urea injection, thermal decomposition, SCR system
Published: 04.03.2019

Against the background of a continuous increase in the vehicle fleet, the issue of emissions of harmful substances entering with exhaust gases continues to be one of the most pressing. To solve it, many methods and tools have been developed, including various exhaust gas post-treatment systems. In this paper, we consider the system of selective catalytic neutralization, the principle of operation and the main factors affecting their effectiveness. Particular attention is paid to the issue of evaporation of the reagent injected into the exhaust tract. A mathematical model has been developed that makes it possible in the first approximation to determine the location of the nozzle, which ensures the complete evaporation of the reagent before entering the catalyst unit. On the basis of the proposed methodology, an appropriate calculation was performed for a promising diesel engine.

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