IJE TRANSACTIONS C: Aspects Vol. 27, No. 3 (March 2014) 449-456   

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M. Mardi Kolur, S. Khalil Arya, S. Jafarmadar and A. Nemati
( Received: July 02, 2013 – Accepted: September 14, 2013 )

Abstract    In the present study, a computational fluid dynamics (CFD) method have been utilized to investigate the effects of exhaust gas recirculation (EGR) and initial charge pressure by means of using a supercharger on the emissions and performance of a SI engine. This engine is fueled separately by gasoline and two potential alternative fuels, hydrogen and ethanol. The results of simulation are compared to the experimental data. There is a good agreement among the results. The calculations are carried out for EGR ratios between 0% and 20% and four cases of initial pressure have been mentioned: Pin= 1, 1.2, 1.4, 1.6 bar. The effect of EGR on NOx emission of hydrogen is more than others while its effect on IMEP of hydrogen is less than others. From the viewpoints of emission and power, 10% of EGR seems to be the most desirable amount. The most noticeable effect of supercharging is on gasoline unlike hydrogen that seems to be affected the least. The comparison of results shows that hydrogen due to its high heating value and burning without producing any carbon-based compounds such as HC, CO and CO2 is an ideal alternative fuel compared to the other fuels.


Keywords    SI engine, hydrogen, alternative fuels, EGR, supercharging, emission


چکیده    در این مطالعه از یک کد دینامیک سیالات محاسباتی برای تحلیل اثر بازخورانی گازهای خروجی (EGR) و همچنین تغییر فشار اولیه ورودی به سیلندر توسط یک سوپرشارژر بر روی عملکرد و آلایندگی یک موتور اشتعال جرقه­ای استفاده شده است. این موتور به طور جداگانه با بنزین و دو سوخت جایگزین بالقوه یعنی هیدروژن و اتانول سوختگیری شده است. به منظور اعتبار سنجی مدل نتایج بدست آمده برای فشار داخل سیلندر و آلایندگی_ها با داده_های تجربی مقایسه شده که تطبیق مناسبی را نشان می_دهد. محاسبات برای دامنه EGR از 0% تا 20% انجام شده است و چهار حالت برای فشار اولیه در نظر گرفته شده است: Pin= 1, 1.2, 1.4, 1.6 bar. اثر EGR بر آلاینده NOx هیدروژن بیش از بقیه سوخت­ها بوده در حالی که اثر آن بر IMEP هیدروژن کمتر از بقیه است. از دیدگاه آلایندگی و قدرت، 10% EGR مطلوب­ترین مقدار می­باشد. بیشترین اثر قابل توجه سوپرشارژ کردن بر روی بنزین می­باشد برخلاف هیدروژن که کمترین اثر را برداشته است. مقایسه نتایج نشان می_دهد که هیدروژن به عنوان یک حامل انرژی پاک با ارزش حرارتی بالا و احتراق بدون تولید محصولاتی از منشا کربن مانند CO2 ، CO و HC توانایی جایگزین شدن با سوخت_های متداول را دارد.



1.     Heywood, J. B., "Internal combustion engine fundamentals", McGraw-Hill New York,  Vol. 930,  (1988).

2.     A., S., Khtibzade N. and H., S. A., "Performance and emissions characteristics of a bifuel si engine fueled by cng and gasoline", ASME paper ICES,  (2006).

3.     Cordeiro de Melo, T., Machado, G., Machado, R. and Pereira Belchior, C., "Thermodynamic modeling of compression, combustion and expansion processes of gasoline, ethanol and natural gas with experimental validation on a flexible fuel engine", Training,  (2006), 01-25.

4.     Verhelst, S., Sierens, R. and Verstraeten, S., "Development of a simulation code for hydrogen fuelled si engines", ASME, (2006).

5.     Schoenung, S. M., "Hydrogen vehicle fueling alternatives: An analysis developed for the international energy agency", (2001).

6.     Fagelson, J., McLean, W. and De Boer, P., "Performance and nox emissions of spark ignited combustion engines using alternative fuels—quasi one-dimensional modeling i. Hydrogen fueled engines", Combustion Science and Technology,  Vol. 18, No. 1-2, (1978), 47-57.

7.     Prabhu Kumar, G., Nagalingam, B. and Gopalakrishnan, K., "Theoretical studies of a spark-ignited supercharged hydrogen engine", International Journal of Hydrogen Energy,  Vol. 10, No. 6, (1985), 389-397.

8.     Ma, J., Su, Y., Zhou, Y. and Zhang, Z., "Simulation and prediction on the performance of a vehicle's hydrogen engine", International Journal of Hydrogen Energy,  Vol. 28, No. 1, (2003), 77-83.

9.     Nieminen, J., D'Souza, N. and Dincer, I., "Comparative combustion characteristics of gasoline and hydrogen fuelled ices", International Journal of Hydrogen Energy,  Vol. 35, No. 10, (2010), 5114-5123.

10.   Nagalingam, B., Dubel, M. and Schmillen, K., Performance of the supercharged spark ignition hydrogen engine., Indian Institute of Technology, Madras. (1983)

11.   Furuhama, S. and Fukuma, T., "High output power hydrogen engine with high pressure fuel injection, hot surface ignition and turbocharging", International Journal of Hydrogen Energy,  Vol. 11, No. 6, (1986), 399-407.

12.   Lynch, F., "Parallel induction: A simple fuel control method for hydrogen engines", International Journal of Hydrogen Energy,  Vol. 8, No. 9, (1983), 721-730.

13.   Berckmuller, M., Rottengneber, H. and Eder, A., Potentials of a charged si-hydrogen engine. SAE Paper, (2003), 01-3210.

14.   Roy, M. M., Tomita, E., Kawahara, N., Harada, Y. and Sakane, A., "Comparison of performance and emissions of a supercharged dual-fuel engine fueled by hydrogen and hydrogen-containing gaseous fuels", International Journal of Hydrogen Energy,  Vol. 36, No. 12, (2011), 7339-7352.

15.   Zeldovich, Y., Frank-Kamenetskii, D. and Sadovnikov, P., "Oxidation of nitrogen in combustion", Publishing House of the Acad of Sciences of USSR,  (1947).

16.   Richard, S., Colin, O., Vermorel, O., Benkenida, A., Angelberger, C., and Veynante, D., "Towards large eddy simulation of combustion in spark ignition engines", Proceedings of the Combustion Institute,  Vol. 31, No. 2, (2007), 3059-3066.

17.   A., M., S., J., J., P. and M., S., "Experimental studying of the effect of egr distribution on the combustion, emissions and perforemance in a turbocharged di diesel engine", International Journal of Engineering Transactions A: Basics,  Vol. 26, No. 1, (2013), 73-82.

18.   Hountalas, D., Mavropoulos, G. and Binder, K., "Effect of exhaust gas recirculation (egr) temperature for various egr rates on heavy duty di diesel engine performance and emissions", Energy,  Vol. 33, No. 2, (2008), 272-283.

19.   Komninos, N. and Rakopoulos, C., "Modeling hcci combustion of biofuels: A review", Renewable and Sustainable Energy Reviews,  Vol. 16, No. 3, (2012), 1588-1610.

20.           Boretti, A. A. and Watson, H. C., "Enhanced combustion by jet ignition in a turbocharged cryogenic port fuel injected hydrogen engine", International Journal of Hydrogen Energy,  Vol. 34, No. 5, (2009), 2511-2516.  

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