The effect of fuel dose division on the emission of toxic components in the car diesel engine exhaust gas

• Autorzy: Pietras D.
• Języki publikacji: EN

Abstrakty

EN

The article discusses the effect of fuel dose division in the Diesel engine on smoke opacity and composition of the emitted exhaust gas. The research activities reported in the article include experimental examination of a small Diesel engine with Common Rail type supply system. The tests were performed on the engine test bed equipped with an automatic data acquisition system which recorded all basic operating and control parameters of the engine, and smoke opacity and composition of the exhaust gas. The parameters measured during the engine tests also included the indicated pressure and the acoustic pressure. The tests were performed following the pre-established procedure in which 9 engine operation points were defined for three rotational speeds: 1500, 2500 and 3500 rpm, and three load levels: 25, 40 and 75 Nm. At each point, the measurements were performed for 7 different forms of fuel dose injection, which were: the undivided dose, the dose divided into two or three parts, and three different injection advance angles for the undivided dose and that divided into two parts. The discussion of the obtained results includes graphical presentation of contests of hydrocarbons, carbon oxide, and nitrogen oxides in the exhaust gas, and its smoke opacity. The presented analyses referred to two selected cases, out of nine examined engine operation points. In these cases the fuel dose was divided into three parts and injected at the factory set control parameters. The examination has revealed a significant effect of fuel dose division on the engine efficiency, and on the smoke opacity and composition of the exhaust gas, in particular the content of nitrogen oxides. Within the range of low loads and rotational speeds, dividing the fuel dose into three parts clearly improves the overall engine efficiency and significantly decreases the concentration of nitrogen oxides in the exhaust gas. Moreover, it slightly decreases the contents of hydrocarbons and carbon oxide. In the experiment the contents of nitrogen oxides markedly increased with the increasing injection advance angle for the undivided dose and that divided into two parts. This, in turn, led to the decrease of the contents of hydrocarbons and carbon oxide. Fuel dose division into two and three parts leads to the increase of smoke opacity of the exhaust gas, compared to the undivided dose

• Wydawca: -
• Czasopismo: Polish Maritime Research
• Rocznik: 2016
• Tom: 23
• Numer: 3
• Opis fizyczny: p.58-63,fig.,ref.

Twórcy

autor

Pietras D.

• Department of Combustion Engines and Vehicles, University of Bielsko-Biala, Willowa 2, 43-300 Bielsko-Biala, Poland

Bibliografia

• 1. Kneba, K., Makowski, S., Engine fuel supply and control (in Polish), Wydawnictwa Komunikacji i Łączności, s. 308, Wydanie 1, Warszawa 2004.
• 2. Badami, M., Mallamo, F., Millo, F., Rossi E.E., Experimental investigation on the effect of multiple injection strategies on emissions, noise and brake specific fuel consumption of an automotive direct injection common-rail diesel engine, International Journal of Engine Research, Volume 4, Number 4, 1 December 2003.
• 3. Benajes, J., Molina, S. and Garcia, J. M., Influence of pre- and post-injection on the performance and pollutant emissions in a HD diesel engine, SAE Paper 2001-01-0526, 2001.
• 4. Rinolfi, R., Imarisio, R. and Buratti, R., The potential of a new common rail diesel fuel injection system for the next generation of DI diesel engines, In 16 Internationales Wiener Motorensymposium, Vol. 12, No. 239 (VDI-Verlag, Reihe).
• 5. Stelmasiak, Z., Knefel, T., Larisch, J., The influence of the time break of the fuel divided dose on the work parameters of the injector Common Rail system, Combustion Engines, No 2007-SC2, s.173-180, 2007.
• 6. Janiszewski, T., Mavrantzas, S., Electronic ignition systems for Diesel engines (in Polish), WKŁ, Warszawa 2001.
• 7. Pietras, D., Evaluation of the fuel dose distribution on the combustion process in a small diesel engine, Combustion engines No. 3/2011 (146), ISSN 0138-0346.
• 8. Pietras, D., Evaluation the sound pressure level of the small CI engine. Combustion Engines SC1 (Powertrain, Design, Ecology & Diagnostics) 2009, str. 204-207.
• 9. Larisch, J., Knefel, T., Stelmasiak, Z., Pietrasina, W., A Development Control Unit For Common Rail Injection System, Paper registered under No. PTNSS P05-C158, PTNSS Congress 2005, Bielsko-Biała-Szczyrk 2005.
• 10. Stelmasiak, Z., Knefel, T., Larisch, J., Research programmer for Common Rail injection system, Pomiary, Automatyka, Kontrola 2010 Vol. 56 nr 3 . - s. 217-220.
• 11. Knefel, T., Comparative analysis of chosen injection time of multipartial fuel delivery, Technical Transactions 2012, z.9, ISSN 0011-4561, s. 115-129.
• 12. Knefel, T., Technical assessment of common rail injectors on the ground of overflow bench tests, Maintenance and Reliability 2012, Vol. 14, No. 1. - ISSN 1507-2711, s. 42-53.
• 13. Boulouchos, K., Stelber, H., Schubiger, R., Eberle, M., Lutz, T., Combustion System and Process Optimisation for Large Diesel Engines with Common Rail Fuel Injection, MTZ 5/2000.
• 14. Broge, J.L., The diesel is coming, Automotive Engineering Int., January 2004.

Identyfikatory

DOI

10.1515/pomr-2016-0032