Abstract
Exhaust gas aftertreatment systems have been present in motor vehicles for decades and have contributed to reducing their impact on the environment and people. Most of them for oxidation or reduction of harmful emissions of particulates and fumes require a certain temperature to be reached that changes with the exhaust temperature, i.e. the points of engine operation. The article describes the effect of oxidation reactor and particulate filter temperatures on specific emissions of gaseous compounds and particulate matter during the modified NRSC engine test. Before the first measurement cycle, the engine was idling, before the second measurement cycle, the exhaust system was heated with exhaust gases at full engine load until passive regeneration of the particle filter occurred (noticeable decrease in instantaneous particle concentration).
Highlights
The process of burning fuel in engines causes the formation of a number of harmful compounds
Diesel particulate filters (DPFs) and selective catalytic reduction are common in vehicles with CI engines [5, 6]
This is the first solution currently being applied to vehicles with spark ignition engines due to the introduction of further limits for specific emission of harmful exhaust gases [7, 8]
Summary
The process of burning fuel in engines causes the formation of a number of harmful compounds. The products of complete and total combustion include carbon dioxide and water vapor; nitrogen oxides, carbon monoxide, hydrocarbons, solid particles and others are produced by imperfections in this process For motor vehicles, they have been limited by the Euro emission standards since 1992 [1]. Diesel particulate filters (DPFs) and selective catalytic reduction are common in vehicles with CI engines [5, 6] This is the first solution currently being applied to vehicles with spark ignition engines due to the introduction of further limits for specific emission of harmful exhaust gases [7, 8]
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