Single Zone Model for HCCI Engine Fueled with n-Heptane

Authors: Thanapiyawanit Bancha, Lu Jau-Huai

Abstract:

In this study, we developed a model to predict the temperature and the pressure variation in an internal combustion engine operated in HCCI (Homogeneous charge compression ignition) mode. HCCI operation begins from aspirating of homogeneous charge mixture through intake valve like SI (Spark ignition) engine and the premixed charge is compressed until temperature and pressure of mixture reach autoignition point like diesel engine. Combustion phase was described by double-Wiebe function. The single zone model coupled with an double-Wiebe function were performed to simulated pressure and temperature between the period of IVC (Inlet valve close) and EVO (Exhaust valve open). Mixture gas properties were implemented using STANJAN and transfer the results to main model. The model has considered the engine geometry and enables varying in fuelling, equivalence ratio, manifold temperature and pressure. The results were compared with the experiment and showed good correlation with respect to combustion phasing, pressure rise, peak pressure and temperature. This model could be adapted and use to control start of combustion for HCCI engine.

Keywords: Double-Wiebe function, HCCI, Ignition enhancer, Single zone model.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1332454

References:

[1] Yi-Hann Chen and Jyh-Yuan Chen, "Experiment Exploration of HCCI for KYMCO 100cc Two-Stroke Gasoline Engine," Journal of the Chinese Society of Mechanical Engineers, Vol.25, No.2, pp.165-174, 2004.
[2] Junjun Ma, Xingcai L├╝, Libin Ji, and Zhen Huang, "An experimental study of HCCI-DI combustion and emissions in a diesel engine with dual fuel," International Journal of Thermal Sciences 47, pp.1235-1242, 2008.
[3] Xingcai L├╝, Libin Ji, Linlin Zu, Yuchun Hou, Cheng Huang, and Zhen Huang, "Experimental study and chemical analysis of n-heptane homogeneous charge compression ignition combustion with port injection of reaction inhibitors," Combustion and Flame 149 pp. 261-270, 2007.
[4] Stephen R. Turn, "An Introduction to Combustion: Concepts and Applications," 2nd edition, McGRAW-HILL companies, Inc., international editions, Singapore, 2000.
[5] C. Stuart Daw, Robert M. Wagner, K. Dean Edwards, and Johney B. Green Jr., "Understanding the transition between conventional spark-ignited combustion and HCCI in a gasoline engine;" Proceedings of the Combustion Institute 31 (2007) pp. 2887-2894.
[6] Sjoberg, M, and Dec, J.E., "Comparing late-cycle autoignition stability for single- and two-stage ignition fuels in HCCI engines," Proceedings of the combustion institute 31, pp.2895-2902, 2006
[7] Alex C. Alkidas., Combustion advancements in gasoline engines. Energy Conversion and Management 48, pp.2751-2761, 2007.
[8] A. Tsolakis, A. Megaritis, D. Yap., Application of exhaust gas fuel reforming in diesel and homogeneous charge compression ignition (HCCI) engines fuelled with biofuels. Energy 33, pp.462-470, 2008.
[9] H. T. Aichlmayr, D. B. Kittelson, M. R. Zachariah, "Miniature free-piston homogeneous charge compression ignition engine-compressor concept- Part I: performance estimation and design considerations unique to small dimensions," Chemical Engineering Science 57, pp.4161-4171, 2002.
[10] Quintero H.F., Romero C.A., and Vanegas Useche L.V. "Thermodynamic and dynamic analysis of an internal combustion engine with a noncircular-gear based modified crank-slider mechanism," 12th IFToMM World Congress, Besançon (France), June18-21, 2007.
[11] Ramos J.I., Internal Combustion Engine Modeling. Hemisphere Publishing Corporation, New York, 1989.
[12] Soylu S., "Examination of combustion characteristics and phasing strategies of a natural gas HCCI engine," Energy Conversion and Management 46, pp.101-119, 2005.
[13] Killingsworth N.J., Aceves S.M., Flowers D.L., and Krsic, M., "A simple HCCI engine model for control," Proceedings of the 2006 IEEE, International Conference on Control Applications, Munich, Germany, Oct 4-6, 2006.
[14] Sun F., Chen X., Ting D.S.K., and Sobiesiak A., "Modeling operation of HCCI engines fueled with Ethanol," 2005 American Control Conference, June 8-10, pp.1003-1009, 2005.
[15] Chiang C.J. and Stefanopoulou A.G., "Sensitivity Analysis of Combustion Timing and Duration of Homogeneous Charge Compression Ignition (HCCI) Engines," Proceedings of the 2006 American Control Conference, Minneapolis, Minnesota, USA, June 14-16, pp.1857-1862, 2006.
[16] Moran, M.J. and Shapiro H.N., Fundamental Engineering of Thermodynamics. 5th edition. John Wiley & Sons, Inc. USA.
[17] Yasar, H.,Soyhan, H.S., Walmsley, H., Head, B., Sorusbay, B., "Double-Wiebe function: An approach for single-zone HCCI engine modeling," Applied Thermal Engineering 28, pp.1284-1290, 2008.
[18] Soyhan H.S., Yasar H., Walmsley H., Head B., Kalghatgi G.T. and Sorusbay C., "Evaluation of heat transfer correlations for HCCI engine modeling," Applied Thermal Engineering 29 pp.541-549, 2009.