This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Energy Release Characteristics inside a Spark-Ignition Engine with a Bowl-in-Piston Geometry
ISSN: 0148-7191, e-ISSN: 2688-3627
Published January 16, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Event: Automotive Technical Papers
The conversion of compression ignition (CI) internal combustion engines to spark-ignition (SI) operation by adding a spark plug to ignite the mixture and fumigating the fuel inside the intake manifold can increase the use of alternative gaseous fuels (e.g., natural gas) in heavy-duty applications. This study proposed a novel, less-complex methodology based on the inflection points in the apparent rate of heat release (ROHR) that can identify and separate the fast-burning stage inside the piston bowl from the slower combustion stage inside the squish region (a characteristic of premixed combustion inside a diesel geometry). A single-cylinder 2L CI research engine converted to natural gas SI operation provided the experimental data needed to evaluate the methodology, at several spark timings, equivalence ratios, and engine speeds. The results indicated that the end of the bulk combustion traditionally defined as the location of 90% energy release was not greatly affected by the change in operating conditions. Moreover, the actual duration of the rapid-burning stage was 60-80% shorter than the crank angle interval between 10% and 90% energy release. However, the fast-burning period (i.e., the start and the end of the rapid-burning stage) was well-characterized by the crank angle duration between the first and the second ROHR inflection points. Moreover, this novel methodology to characterize the combustion process suggested that the longer time interval between the end of fast-burn (i.e., the first ROHR inflection point) and the end of combustion was due to an important fuel fraction burning slower inside the squish region, which finally affects both efficiency and emissions of such converted engines.
CitationLiu, J. and Dumitrescu, C., "Energy Release Characteristics inside a Spark-Ignition Engine with a Bowl-in-Piston Geometry," SAE Technical Paper 2020-01-5003, 2020.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
|[Unnamed Dataset 4]|
|[Unnamed Dataset 5]|
|[Unnamed Dataset 6]|
- Langness, C., Mattson, J., and Depcik, C. , “Moderate Substitution of Varying Compressed Natural Gas Constituents for Assisted Diesel Combustion,” Combustion Science and Technology 189(8):1354-1372, 2017.
- Li, H., Gatts, T., Liu, S., Wayne, S. et al. , “An Experimental Investigation on the Combustion Process of a Simulated Turbocharged Spark Ignition Natural Gas Engine Operated on Stoichiometric Mixture,” Journal of Engineering for Gas Turbines and Power 140(9):091504, 2018.
- Langness, C. and Depcik, C. , “Statistical Analyses of CNG Constituents on Dual-Fuel Compression Ignition Combustion,” SAE Technical Paper 2016-01-0802 , 2016. https://doi.org/10.4271/2016-01-0802.
- Zheng, J., Huang, Z., Wang, J., Wang, B. et al. , “Effect of Compression Ratio on Cycle-by-Cycle Variations in a Natural Gas Direct Injection Engine,” Energy & Fuels 23(11):5357-5366, 2009.
- Donateo, T., Tornese, F., and Laforgia, D. , “Computer-Aided Conversion of an Engine from Diesel to Methane,” Applied Energy 108:8-23, 2013.
- Liu, J. , “Investigation of Combustion Characteristics of a Heavy-Duty Diesel Engine Retrofitted to Natural Gas Spark Ignition Operation,” Ph.D. Dissertation, West Virginia University, Morgantown, WV, 2018.
- Raine, R.R., Stephenson, J., and Elder, S.T. , “Characteristics of Diesel Engines Converted to Spark Ignition Operation Fueled with Natural Gas,” SAE Technical Paper 880149 , 1988. https://doi.org/10.4271/880149.
- Heywood, J.B. , Internal Combustion Engine Fundamentals, First Edition (New York: McGraw-Hill, 1988).
- McTaggart-Cowan, G.P., Reynolds, C.C.O., and Bushe, W.K. , “Natural Gas Fuelling for Heavy-Duty On-Road Use: Current Trends and Future Direction,” International Journal of Environmental Studies 63(4):421-440, 2006.
- Reyes, M., Tinaut, F.V., Giménez, B., and Pérez, A. , “Characterization of Cycle-to-Cycle Variations in a Natural Gas Spark Ignition Engine,” Fuel 140:752-761, 2015.
- Meyer, R., Meyers, D., Shahed, S.M., and Duggal, V.K. , “Development of a Heavy Duty On-Highway Natural Gas-Fueled Engine,” SAE Technical Paper 922362 , 1992. https://doi.org/10.4271/922362.
- Johansson, B. and Olsson, K. , “Combustion Chambers for Natural Gas SI Engines Part I: Fluid Flow and Combustion,” SAE Technical Paper 950469 , 1995. https://doi.org/10.4271/950469.
- Olsson, K. and Johansson, B. , “Combustion Chambers for Natural Gas SI Engines Part 2: Combustion and Emissions,” SAE Technical Paper 950517 , 1995. https://doi.org/10.4271/950517.
- Liu, J. and Dumitrescu, C.E. , “Combustion Partitioning inside a Natural Gas Spark Ignition Engine with a Bowl-in-Piston Geometry,” Energy Conversion and Management 183:73-83, 2019.
- Liu, J. and Dumitrescu, C.E. , “3D CFD Simulation of a CI Engine Converted to SI Natural Gas Operation Using the G-Equation,” Fuel 232:833-844, 2018.
- Liu, J. and Dumitrescu, C.E. , “Flame Development Analysis in a Diesel Optical Engine Converted to Spark Ignition Natural Gas Operation,” Applied Energy 230:1205-1217, 2018.
- Liu, J., Bommisetty, H.K., and Dumitrescu, C.E. , “Experimental Investigation of a Heavy-Duty Compression-Ignition Engine Retrofitted to Natural Gas Spark-Ignition Operation,” Journal of Energy Resources Technology 141(11):112207, 2019.
- Shahlari, A.J. and Ghandhi, J.B. , “A Comparison of Engine Knock Metrics,” SAE Technical Paper 2012-32-0007 , 2012. https://doi.org/10.4271/2012-32-0007.
- Burgdorf, K. and Denbratt, I. , “Comparison of Cylinder Pressure Based Knock Detection Methods,” SAE Technical Paper 972932 , 1997. https://doi.org/10.4271/972932.
- Gentz, G., Gholamisheeri, M., and Toulson, E. , “A Study of a Turbulent Jet Ignition System Fueled with Iso-Octane: Pressure Trace Analysis and Combustion Visualization,” Applied Energy 189:385-394, 2017.
- Vuilleumier, D., Kozarac, D., Mehl, M., Saxena, S. et al. , “Intermediate Temperature Heat Release in an HCCI Engine Fueled by Ethanol/N-Heptane Mixtures: An Experimental and Modeling Study,” Combustion and Flame 161(3):680-695, 2014.
- Liu, J. and Dumitrescu, C.E. , “Methodology to Separate the Two Burn Stages of Natural-Gas Lean Premixed-Combustion inside a Diesel Geometry,” Energy Conversion and Management 195:21-31, 2019.
- Cooney, C., Worm, J., Michalek, D., and Naber, J. , “Wiebe Function Parameter Determination for Mass Fraction Burn Calculation in an Ethanol-Gasoline Fuelled SI Engine,” Journal of KONES 15:567-574, 2008.
- Liu, J. and Dumitrescu, C.E. , “Experimental Investigation of a Natural Gas Lean-Burn Spark Ignition Engine with Bowl-in-Piston Combustion Chamber,” SAE Technical Paper 2019-01-0559 , 2019. https://doi.org/10.4271/2019-01-0559.
- Weaver, C.S. , “Natural Gas Vehicle - A Review of the State of the Art,” SAE Technical Paper 892133 , 1989. https://doi.org/10.4271/892133.