EGR and Injection Timing Variation Effects of an Engine Run in HCCI Mode Performance and Emitted Emissions

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2015 by IJETT Journal
Volume-19 Number-3
Year of Publication : 2015
Authors : Miqdam T Chaichan , Khalil I Abaas
DOI :  10.14445/22315381/IJETT-V19P221


Miqdam T Chaichan , Khalil I Abaas "EGR and Injection Timing Variation Effects of an Engine Run in HCCI Mode Performance and Emitted Emissions", International Journal of Engineering Trends and Technology (IJETT), V19(3), 121-130 Jan 2015. ISSN:2231-5381. published by seventh sense research group


Homogeneous charge compression ignition (HCCI) combustion can extend the operation of diesel engine to achieve better performance. HCCI can reduce NOx emissions by the low combustion temperatures resulted from the introduction of a fraction of EGR. Also, it can reduce PM by utilizing the premixed charge combustion. Direct injection multi-cylinder water cooled diesel engine used in this study. The tests procedure consisted of the addition of EGR starting from 0% till burning misfire occurred. Two cases were examined: first case, the injection of diesel fuel at advanced injection timing 35 degrees before top dead center (°BTDC). At the second case; the diesel fuel injected at retarded injecting timing of 12° BTDC. All these cases compared with operating the diesel engine with neat diesel and no EGR addition. The tests results illustrated that retarding injection timing led to a high increase in bsfc by about 17%. Also, it reduced brake thermal efficiency by about 20.88%. While operating the engine with advanced injection timing and 50% EGR resulted in reverse outcomes. Also, tested emissions HC, NOx, PM and engine noise were reduced remarkably compared with operating the engine with neat diesel and no EGR.


[1] C. Hitache, Experimental investigation of diesel HCCI using a Ricardo E6 single cylinder research engine, MSc thesis, Cranfield University UK, 2006.
[2] E. Supeni, T. F. Yusaf, A. P. Wandel, D. R. Buttsworth and M. Noor, Experimental and modelling investigation of the performance characteristics on diesel HCCI with hydrogen additive- a review, National Conference in Mechanical Engineering Research and Postgraduate Studies (2nd NCMER 2010), Kuantan, Pahang, Malaysia; pp: 580-596, 2010.
[3] C. L. Xing, C. Wei, H. Zhen, A fundamental study on the control of the HCCI combustion and emissions by fuel design concept combined with controllable EGR, Part 1, the basic characteristics of HCCI combustion, Fuel, vol. 84, pp: 1074-1083, 2005.
[4] D. Ganesh and G. Nagarajan, Homogeneous charge compression ignition (HCCI) combustion of diesel fuel with external mixture formation, Energy, vol. 35, pp: 148–157, 2010.
[5] A. Dulbecco, Modelling of diesel HCCI combustion and its impact on pollution emissions applied to global engine system simulation, PhD thesis, university of Toulouse, 2010.
[6] M. M. Ghazikhani, M. R. Kalateh, Y. K. Toroghi and M . Dehnavi, An experimental study on the effect of premixed and equivalence ratios on CO and HC emissions of dual fuel HCCI engine. World Academy of Science, Engineering and Technology, vol. 52, pp: 129-135, 2009.
[7] A. Helmantel and I. Denbratt, HCCI operation of a passenger car DI diesel engine with adjustable valve, SAE paper No. 2006-01-0029, 2006
[8] J. B. Martz, Simulation and model development for auto-ignition and reaction front propagation in low –temperature high-pressure lean burn engines, PhD thesis, University of Michigan, 2010.
[9] J. O. Olsson, P. Tunestal, J. Ulfvik and B. Johansson, The effect of cooled EGR on emissions and performance of a turbocharged HCCI engine, SAE Paper 2003-01-0743, 2003.
[10] W. A. Abdelghaffar, NOx formation inside HCCI engines, American Journal of Science and Industrial research, vol. 1, No. 2, pp: 293-302, 2010.
[11] M. T. Chaichan and A. M. Saleh, Practical investigation of the effect of EGR on DI multi cylinders diesel engine emissions, Al Anbar University J, (In press), 2012.
[12] P. Risberg, D. Johansson, J. Andrae, B. P. Kalghatgi, and H. E. Angstrom, The influence of NO on the combustion phasing in an HCCI engine, SAE paper No. 2006-01-0416, 2006.
[13] G. Chen, I. Norimasa and Z. Huang, Numerical study of EGR effects on reducing the pressure rise rate of HCCI engine combustion, Front. Energy Power Eng., China, vol. 4, No. 3, pp: 376–385, 2010.
[14] H. Machrafi, S. Cavadias and P. Guibert, An experimental and numerical investigation on the influence of external gas recirculation on the HCCI auto-ignition process in an engine: Thermal, diluting, and chemical effects, Combustion and Flame, vol. 155, No. 3, pp: 476–489, 2008.
[15] W. L. Hardy and R. D. Reitz, A Study of the effects of high EGR, high equivalence ratio, and mixing time on emissions levels in a heavy duty diesel engine for PCCI combustion, SAE Paper No. 2006-01-0026, 2006.
[16] M. T. Chaichan, K. I. Abaas and A. H. Naser, Study of the effect of exhaust gas recirculation on performance and emitted noise of an engine fuelled with diesel fuel, Association of Arab Universities Journal of Engineering Science, vol. 20, No. 1, pp: 43-59, 2013.
[17] L. Franklin, Effects of HCCI control strategies on particulates emissions of ethanol fuel, PhD thesis, University of Minnesota, USA, 2010.
[18] A. Tsolakis, A. Megaritis and D. Yap, Application of exhaust gas fuel reforming in diesel and homogeneous charge compression ignition (HCCI) engines fuelled with bio-fuels, Energy, vol. 33, No. 3, pp: 462-470, 2008.
[19] E. L. Keeting, Applied combustion, 2nd edition, Taylor & Francis Group, LLC, 2007.
[20] ASHREA GIUDE LINE. Guide engineering analysis of experimental data, Guideline 2-1986.

HCCI, NOx-PM trade-off, CO, HC, noise.