Novel catalytic converter oxide for SI engines

• Autorzy: Jankowski A. , Kruczynski S. W.
• Języki publikacji: EN

Abstrakty

EN

Subject of the paper are converters of lean mixtures for SI engines with a good efficiency of NOx reduction. Investigation of new effective catalytic materials having good sorptive proprieties of nitrogen oxides and simultaneously resistant on the thermal destruction and chemical destruction are main aim of the paper. The operating idea of such converters and conditions of their work are also presented. Main objective of the paper is performance of the new reactor of the Pt/Rh-MgO/CeO2/Al2O3 formula. The magnesium oxide MgO is here an absorber of nitrous oxides and has an essential feature, it is resistant on sintering. Such reactor can be the alternative for generally applied converters containing the barium oxide. Experimental results of catalytic converter containing various quantities of magnesium oxide for SI engines with lean mixtures are presented in the paper. Researches involved both laboratory and engine tests. The laboratory researches concern the topography active surface of the reactor with the scanning electron microscopy) method. Size of platinum and rhodium crystallites obtainedfrom the Scherrer dependence analyzing the diffractive spectrum of the X-radiation (XRD) was about 5 nm. Moreover method covering of reactor's active layers on the metal- monolith is presented. Engine researches comprised CO, THC, and NOx conversion for two engines in conditions of lean (A/F=20.0), reach (A/F=14.0), and stoichiometric (A/F=14.7) mixtures. CO, THC, and NOx conversion were stated in the dependence of temperature catalytic process in conditions of the various mixtures.

Słowa kluczowe

EN

combustion engines; ecology; exhaust emission; lean mixtures; catalytic converters

• 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: 2010
• Tom: Vol. 17, No. 1
• Strony: 177--186
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Jankowski A.

autor

Kruczynski S. W.

• Warsaw University of Technology Narbutta Street 84, 02-524 Warsaw Poland tel: [phone],

Bibliografia

• [1] Brogan, M., Brisley, R., Walker, D., Webster, D., Boegner, W., Fekate, N., Kramer, M., Krutzsch, B., Voightlander, D., Evaluation of NOx Storage Catalysts as an Effective System from NOx Removal from the Exhaust of Lean Burn Gasoline Engines, SAE Technical Paper 952490, 1995.
• [2] Miyoshi, N., Matsumoto, S., Katoh, K., Tankak, T., Harada, J., Takahashi, N., Yokota, K., Sugiura, M., Kasahara, K., Development of New Concept Three Way Catalyst for Automotive Lean Burn Engines, SAE Technical Paper 950809, 1995.
• [3] Diringer, J., Konieczny, R., Scheeder, A., SCR System With Integrated Continuously Particle Reduction ( SCRi®): Next Generation Of NOx Treatment And Also Suitable for Retrofit, SAE Paper No. F2008-01-026, Munich, Germany 2008.
• [4] Youn, Y. K., Park, J. W., Kwon, C. I., Lee, J. H., Yeo, G. K., The Study of Fuel Cracking Effect on NOx Absorber Catalyst, SAE Paper, 2006-01-1370, 2006.
• [5] Steiger, W., Jelitto, C., Schmerbeck, S., GCI and CCS®– Two new Combustion Systems of Volkswagen, 29th International Vienna Motor Symposia, Vienna 2008.
• [6] Jeona, J. Y., Kim, H. Y., Woo, S. I., Selective catalytic reduction of NOx in lean-burn engine exhaust over a Pt/V/MCM-41 catalyst, Applied Catalysis B: Environmental, Vol. 44, No. 4, pp. 311-323, 2003.
• [7] Raab, F., Hartkopf, L., Hieber, D., Tschoke, H., Reducing Hydrocarbon Emissions in Gasoline Engine Warm-up, SAE Paper No. F2006P276, Yokohama, Japan 2006.
• [8] Naito, K., Suzuki, H., Tanaka, M., Taniguchi, M., Uenishi, I., Tan, N., Kajita, I., Takahashi, K., Narita, A., Hirai, M., Kimura, Y., Nishihata, Mizuki, J., Development of a Rh-Intelligent Catalyst, SAE Paper 2006-01-0851, 2006.