The effect of Pt active coating application inside diesel engine on polycyclic aromatic hydrocarbons (PAHS) emission

• Autorzy: Janicka A , Walkowiak W. , Szczepaniak W.
• Języki publikacji: EN

Abstrakty

EN

Application of active coating inside of an self-ignition engine may have an important impact on several stages of combustion process: fuel cracking, fore-flame phase, combustion phase and secondary combustion phase [7]. Investigations of such construction are very rare in the literature - especially of hydrocarbons emission. Polycyclic aromatic hydrocarbons (PAHs) are known to have mutagenic and carcinogenic effect on humans [2, 6, 7]. One of the most important anthropogenic sources of these substances is motorization (especially diesel engines). The paper presents results of measurements of PAHs emissions from SB3.1 self-ignition engine with Pt active coating application inside. The catalyst was applied on engine valves surface. Zirconium ceramic was chosen as a coating for catalyst application (also because of its thermo-insulating properties). Because of unstable parameters of self-ignition engine work (pressure and temperature jumps), PAHs were extracted from two phases: gas phase and solid phase (particle matter - PM). A chromatographic method of PAHs identification and analysis, because of their low level of concentration in exhaust gases, needed to be supported by sample purification and enrichment stages [40]. It has been found that a significant decrease of total toxic polycyclic aromatic hydrocarbons concentration in engine exhaust gases for engine with Pt catalyst application. The catalyst application causes also changes in relative concentrations of polycyclic aromatic hydrocarbons.

Słowa kluczowe

EN

active coating; catalyst; polycyclic aromatic hydrocarbons; diesel engine

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2008
• Tom: Vol. 15, No. 2
• Strony: 131--136
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Janicka A

autor

Walkowiak W.

autor

Szczepaniak W.

• Wroclaw University of Technology, Institute of Environmental Protection Engineering Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Dobbins, R. A., Fletcher, R. A., Benner, B. A., Hoeft, S., Polycyclic aromatic hydrocarbons in flames, in diesel fuels and in diesel emissions, Combustion and flame 144 (2006) pp. 773-781.
• [2] Kuo, C. Y., Hsu, Y. W., Lee, H. S., Study of Human Exposure to Particulate PAHs Using Personal Air Samplers Arch. Environ, Contam. Toxicol., 44, pp. 454-459 (2003).
• [3] Mello, J. P., Bezaire, D., Sriramulu, S., Performance and Economics of Catalytic Glow Plugs and Shields in Direct Injection Natural Gas Engines for the Next Generation Natural Gas Vehicle Program, Final Raport, National Renewable Energy Laboratory, Cambridge, Massachusetts, August 2003, NREL/SR-540-34286.
• [4] Mendyka, B., Syczewska, K., Optymalizacja metody przygotowania próbki WWA do analizy chromatograficznej z różnych elementów środowiska, Raport Politechniki Wrocławskiej serii SPR Nr 26/99.
• [5] Musialik - Piotrowska, A., Syczewska, K., Mendyka, B., Katalityczne spalanie wielopierścieniowych węglowodorów aromatycznych, Instytut Inżynierii Ochrony środowiska 82 (2003), pp. 385-393.
• [6] Rhead, M. M., Hardy, S. A., The sources of polycyclic aromatic compounds in diesel engine emission, Fuel 82 (2003), pp. 385-393.
• [7] Walkowiak, W. i in, Obniżanie toksyczności spalin silnika o zapłonie samoczynnym przez zastosowanie wewnętrznego katalizatora spalania, Raport Politechniki Wrocławskiej Seria, Spr 47/2007.