Study of Turbulent Entrainment Quasi-Dimensional Combustion Model for HCNG Engines with Variable Ignition Timings
To be published on September 10, 2018 by SAE International in United States
Presently, urban transportation highly depends on the fossil fuels, but its rapid fluctuating economic issues and environmental consequences impose the variegation of energy sources. Hydrogen enriched compressed natural gas (HCNG) engines offer the potential of higher brake thermal efficiency with low emissions, which also satisfies the strict pollutant emission standards. The two-zone turbulent entrainment quasi-dimensional combustion model is developed to predict the combustion process of spark-ignited hydrogen enriched compressed natural gas-fueled engines. The fundamentals of thermodynamic process, turbulent flame propagation model and other sub-models like laminar burning velocity, adiabatic temperature and ignition lag model are introduced for the better accuracy. The experiments have been conducted for three different fuels; pure CNG, 20% HCNG, and 40% HCNG blends under MAP of 105 kPa for various excess air ratios (λ) and ignition timing (θi). The three calibration coefficient of the model; Turbulent intensity coefficient C2, the Taylor length scale coefficient C3, and Ignition lag coefficient Cig are tuned to generate the pressure traces which closely resembled to experimental results. After comparing the numerical simulation results with the experiment’s outcomes it is found that the predictive accuracy of the presented model is quite impressive, and it is well accepted for the extremely fuel lean conditions where issues of bad combustion become serious.
CitationMehra, R., Ma, F., Hao, D., and Juknelevičius, R., "Study of Turbulent Entrainment Quasi-Dimensional Combustion Model for HCNG Engines with Variable Ignition Timings," SAE Technical Paper 2018-01-1687, 2018.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
- Mehra, R.K., Duan, H., Juknelevičius, R., Ma, F. et al., “Progress in Hydrogen Enriched Compressed Natural Gas (HCNG) Internal Combustion Engines - A Comprehensive Review,” Renewable and Sustainable Energy Reviews 80:1458-1498, 2017.
- Yan, F., Xu, L., and Wang, Y., “Application of Hydrogen Enriched Natural Gas in Spark Ignition IC Engines: From Fundamental Fuel Properties to Engine Performances and Emissions,” Renewable and Sustainable Energy Reviews., 2017.
- Ma, F., Ding, S., Wang, Y., Wang, M. et al., “Performance and Emission Characteristics of a Spark-Ignition (SI) Hydrogen-Enriched Compressed Natural Gas (HCNG) Engine under Various Operating Conditions Including Idle Conditions,” Energy & Fuels. 23:3113-3118, 2009.
- Ma, F., Ding, S., Wang, Y., Wang, Y. et al., “Study on Combustion Behaviors and Cycle-By-Cycle Variations in a Turbocharged Lean Burn Natural Gas SI Engine with Hydrogen Enrichment,” International Journal of Hydrogen Energy 33:7245-7255, 2008.
- Kosmadakis, G., Rakopoulos, D., and Rakopoulos, C., “Methane/Hydrogen Fueling a Spark-Ignition Engine for Studying NO, CO and HC Emissions with a Research CFD Code,” Fuel 185:903-915, 2016.
- Hann, S., Urban, L., Grill, M., and Bargende, M., “Influence of Binary CNG Substitute Composition on the Prediction of Burn Rate, Engine Knock and Cycle-to-Cycle Variations,” SAE Int. J. Engines 10(2):501-511, 2017, doi:10.4271/2017-01-0518.
- Tangöz, S., Akansu, S.O., Kahraman, N., and Malkoc, Y., “Effects of Compression Ratio on Performance and Emissions of a Modified Diesel Engine Fueled by HCNG,” International Journal of Hydrogen Energy 40:15374-15380, 2015.
- Afshari, M., Daryan, J.H., Jazayeri, S.A., Ebrahimi, R., and FSN, K., “A Numerical Investigation on a Spark Ignition Engine Fueled with the Hydrogen-Methane Blend Using a Quasi-Dimensional Method,” SAE Technical Paper 2015-01-0770, 2015, doi:10.4271/2015-01-0770.
- Alla, G.A., “Computer Simulation of a Four Stroke Spark Ignition Engine,” Energy Conversion and Management 43:1043-1061, 2002.
- Woschni, G., “A Universally Applicable Equation for The Instantaneous Heat Transfer Coefficient in The Internal Combustion Engine,” SAE Technical Paper 670931, 1967, doi:10.4271/670931.
- Verhelst, S. and Sierens, R., “A Quasi-Dimensional Model for the Power Cycle of a Hydrogen-Fuelled ICE,” International Journal of Hydrogen Energy 32:3545-3554, 2007.
- Perini, F., Paltrinieri, F., and Mattarelli, E., “A Quasi-Dimensional Combustion Model for Performance and Emissions of SI Engines Running on Hydrogen-Methane Blends,” International Journal of Hydrogen Energy 35:4687-4701, 2010.
- Ma, F., Wang, Y., Wang, M., Liu, H. et al., “Development and Validation of a Quasi-Dimensional Combustion Model for SI Engines Fuelled by HCNG with Variable Hydrogen Fractions,” International Journal of Hydrogen Energy 33:4863-4875, 2008.
- Ma, F., Li, S., Zhao, J., Qi, Z. et al., “A Fractal-Based Quasi-Dimensional Combustion Model for SI Engines Fuelled by Hydrogen Enriched Compressed Natural Gas,” International Journal of Hydrogen Energy 37:9892-9901, 2012.
- Ji, C., Yang, J., Liu, X., Zhang, B. et al., “A Quasi-Dimensional Model for Combustion Performance Prediction of an SI Hydrogen-Enriched Methanol Engine,” International Journal of Hydrogen Energy 41:17676-17686, 2016.
- Sonntag, R.E. and Van Wylen, G.J., Introduction to Thermodynamics: Classical and Statistical, (1971).
- Blizard, N.C. and Keck, J.C., “Experimental and Theoretical Investigation of Turbulent Burning Model for Internal Combustion Engines,” SAE Technical Paper 740191, 1974, doi:10.4271/740191.
- Tabaczynski, R.J., Ferguson, C.R., and Radhakrishnan, K., “A Turbulent Entrainment Model for Spark-Ignition Engine Combustion,” SAE Technical Paper 7706472414-2433, 1977, doi:10.4271/770647.
- Smith, J.R., “Turbulent Flame Structure in a Homogeneous-Charge Engine,” SAE Technical Paper 820043150-164, 1982, doi:10.4271/820043.
- Dent, J.C. and Salama, N.S., “The Measurement of the Turbulence Characteristics in an Internal Combustion Engine Cylinder,” SAE Technical Paper 750886, 1975, doi:10.4271/750886.
- Wong, V.W. and Hoult, D.P., “Rapid Distortion Theory Applied to Turbulent Combustion,” SAE Technical Paper 790357, 1979, doi:10.4271/790357.
- Di Sarli, V. and Di Benedetto, A., “Laminar Burning Velocity of Hydrogen-Methane/Air Premixed Flames,” International Journal of Hydrogen Energy 32:637-646, 2007.
- Yin, C.Q., Cheng, P., Gao, Y.H., and Xing, S.H., “Study on Property of a Stable Pressure Box with Damping Line for Engine Experiment,” Nat Sci J Jilin Univ Technol 31:75-78, 2001.
- Ma, F., Wang, Y., Wang, J., Zhao, S. et al., “Development and Validation of an on-Line Hydrogen-Natural Gas Mixing System for Internal Combustion Engine Testing,” SAE Technical Paper 2008-01-1580, 2008, doi:10.4271/2008-01-1580.