Abstract
Combustion engines still constitute a basic source of propulsion for passenger, light duty and heavy duty vehicles. Unfortunately, finding an equally reliable replacement fueled with substances of such availability as crude oil seems unlikely. To that end, a continuous improvement of modern combustion engines as well as seeking ways to eliminate the sources of emissions is of the utmost importance. Relatively high NOx and PM emissions are on the side of the negative results of CI engine operation. More and more stringent emission norms, which are gradually being introduced in industrially developed countries of the world by legislative emission agencies, are giving voice to care about a decrease of this negative influence. In order to meet the emission norms, various technical methods (in-engine and after-treatment) should be used to decrease the emissions of the toxic compounds. PM emission from the internal combustion engines is one of the most serious dangers to the environment within urban centers. The effective method of PM reduction from CI engines is the CRT (Continuously Regenerating Trap) without additive. The hollow part structure of TiO2-x-RuO2-x has been proposed as the active layer on the catalyst carrier, composed of SiC. This structure is used in the catalyst technology. The washcoat of TiO2-x- RuO2-x has been obtained by USPD method (Ultra Spray Pyrolysis Deposition). Such parameters as: flow velocity, salt concentration, the influence of temperature and process atmosphere on the size and shape of TiO2-x-RuO2-x particles are determined. The catalyst alloy contains nanoparticles of Pd-Au, which encapsulated the nanoparticles of Ag and Ni.
Keywords: Diesel particulate filter, Nanotechnology, CI engines