Examinations of the influence of heating up the catalytic reactor on the toxic exhaust gases component emission during a cold start-up

• Autorzy: Koliński K.
• Języki publikacji: EN

Abstrakty

EN

This article presents the results of the tests of catalytic reduction of carbon oxide and hydrocarbon emission during the self-ignition engine start-up. The tests were performed at the station in the climate chamber at lowered ambient temperatures: -7 ,-15 and -20 °C. A heated three-function platinum-palladium catalytic reactor with a metal monolith was used in the tests. The test methodology included a measurement of toxic exhaust gases concentration upstream and downstream the catalytic reactor at simultaneous measurement of the start-up parameters and measurement of temperatures in selected engine and catalytic reactor locations. A period of the cold engine start-up is characterized by a relatively high carbon oxide and hydrocarbon emission. The level of that emissions increases as the ambient temperature gets lower. As a result of the tests the influence of heating up the reactor on its operation during the self-ignition engine start-up was identified. Carbon oxide and hydrocarbon emission during the start-up period can be reduced by initial heating up the catalytic reactor before the start-up by means of an electric heater. When heating up the reactor surface up to 40°C at ambient temperature of-7°C, CO concentration can be reduced by 60...80% and the hydrocarbon concentration can be reduced by app. 60% on the average.

Słowa kluczowe

EN

combustion engines; engine start-up; emission; catalytic reactor

• 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: 2009
• Tom: Vol. 16, No. 1
• Strony: 255--264
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Koliński K.

• Military University of Technology, Faculty of Mechanical Engineering Institute of Motor vehicles and Transportation Gen. S. Kaliskiego 2, 00-908 Warsaw, Poland tel.:/fax[phone],

Bibliografia

• [1] Brzeżański, M. D., Toxic exhaust gases emission at the spark-ignition engine heating stage using a heat accumulator, Monografia 326, Politechnika Krakowska, Kraków, 2006.
• [2] Kruczyński, S., Three-functional catalytic reactors. Instytut Technologii Eksploatacji. Warszawa, Radom, 2004.
• [3] Bielaczyc, P., Merkisz, J., Pielacha, J., Thermal state of combustion engine and toxic compound emission, Wydawnictwo Politechniki Poznańskiej, Poznań 2001.
• [4] Rokosch, U., Vehicle exhaust gases treatment systems and on-board diagnostic systems, WKŁ, Warszawa 2007.