Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31584
Effects of Engine Parameters and Fuel Compositions on Ignition Timing and Emission Characteristics of HCCI Engine

Authors: Fridhi Hadia, Soua Wadhah, Hidouri Ammar, Omri Ahmed


In this research, the effects of the engine parameters like compression ratios and steam injection on igniting timing and emission characteristics have been investigated numerically. The in-cylinder temperature and pressure at four different compression ratios have been compared with numerical results, and they show a good agreement with the published data. Two different fuels have been used in this study: Isooctane (IC8H18), and ethanol (C2H5OH). The increasing of the compression ratio (CR) advances the ignition timing, decreases the burn duration and increases the temperature and the pressure. The injection of water vapor lower than 40% decreased the peak temperature and slowed the combustion rate which leads to a lower NOx emission.

Keywords: Compression ratio, emission, HCCI engine, ignition timing, steam injection.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1047


[1] R. K.Maurya and A. K. Agarwal, “Experimental study of combustion and emission characteristics of ethanol fuelled port injected homogeneous charge compression ignition (HCCI) combustion engine,”Applied Energy, vol. 88(4), pp.1169-1180, 2011.
[2] I. Najafabadi, N. Abdul Aziz. “Homogeneous charge compression ignition combustion: challenges and proposed solutions,” Journal of combustion, 2013.
[3] A. P.Singh, and A. K. Agarwal, “Combustion characteristics of diesel HCCI engine: an experimental investigation using external mixture formation technique,” Applied Energy, vol. 99, pp.116-125, 2012.
[4] X.Lu, D. Han, and Z. Huang, “Fuel design and management for the control of advanced compression-ignition combustion modes,” Progress in Energy and Combustion Science, vol. 37(6), pp.741-783, 2011.
[5] B. M. Masum, H. H. Masjuki, M. A. Kalam, I. R. Fattah, S. M. Palash and M. J. Abedin, “Effect of ethanol–gasoline blend on NOx emission in SI engine,” Renewable and Sustainable Energy Reviews, vol. 24, pp. 209-222, 2013.
[6] X.Pang, Y.Mu, J.Yuan and H.He, “Carbonyls emission from ethanol-blended gasoline and biodiesel-ethanol-diesel used in engines,”Atmospheric Environment, vol. 42(6), pp. 1349-1358, 2008.
[7] H.Machrafiand S. Cavadiasa. “An experimental and numerical analysis of the influence of the inlet temperature, equivalence ratio and compression ratio on the HCCI auto-ignition process of Primary ReferenceFuels in an engine,”Fuel processing technology, vol. 89(11), pp. 1218-1226, 2008.
[8] A.Terashima, N. Ito, T. Tojo, A. Iijima, K.Yoshida and H. Shoji. “A Study of the Effects of Varying the Compression Ratio and Fuel Octane Number on HCCI Engine Combustion using Spectroscopic Measurement,”SAE Technical Paper, 2013.
[9] A.Parlak, V.Ayhan, Y.Üst, B.Sahin, I.Cesur, B.Boru, and G.Kökkülünk, “New method to reduce NOx emissions of diesel engines: electronically controlled steam injection system,” Journal of the Energy Institute, vol. 85(3), pp. 135-139, 2012.
[10] G.Kökkülünk, A.Parlak, E.Bağci and Z.Aydin, “Application of Taguchi Methods for the Optimization of Factors Affecting Engine Performance and Emission of Exhaust Gas Recirculation in Steam-injected Diesel Engines,” ActaPolytechnicaHungarica, vol. 11(5), 2014.
[11] G.Gonca, “Investigation of the effects of steam injection on performance and NO emissions of a diesel engine running with ethanol–diesel blend,” Energy Conversion and Management, vol. 77, pp. 450-457, 2014.
[12] Y. S.Murthy, G. R. K.Sastry and M. R. S. Satyanaryana, “Experimental investigation of performance and emissions on a low-speed diesel engine with a dual injection of solar generated steam and pongamia methyl ester,” Indian Journal of Science and Technology, vol. 4(1), pp. 29-33, 2011.
[13] H. J.Curran, P.Gaffuri, W. J.Pitz and C. K. Westbrook, “A comprehensive modeling study of iso-octane oxidation,” Combustion and flame,vol.129(3), pp. 253-280, 2002.
[14] N. M. Marinov, “A detailed chemical kinetic model for high-temperature ethanol oxidation,” shock, vol. 3(2), pp. 257-263, 1999.
[15] Reaction Design, Theory Manual, Chemkin Software, 2004.
[16] G. Woschni, “A universally applicable equation for the instantaneous heat transfer coefficient in the internal combustion engine,” SAE Technical paper (No. 670931). 1967.
[17] A.Rahbari, A.Afsari, B.Barari, and I.Rostamsowlat, “Theoretical Investigation of the Effects of EGR Fuel Reforming and Compression Ratio on the HCCI Engine Operation Fuelled with Ethanol,” Global Journal of Researches in Engineering, 12(2-B), 2012.