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Turbulent Jet Ignition Effect on Exhaust Emission and Efficiency of a SI Small Engine Fueled with Methane and Gasoline
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 27, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Pollutant emission of vehicle cars is nowadays a fundamental aspect to take into account. In the last decays, the company have been forced to study new solutions, such as alternative fuel and learn burn mixture strategy, to reduce the vehicle’s pollutants below the limits imposed by emission regulations. Pre-chamber ignition system presents potential reductions in emission levels and fuel consumption, operating with lean burn mixtures and alternative fuels. As alternative fuels, methane is considered one of the most interesting. It has wider flammable limits and better anti-knock properties than gasoline. Moreover, it is characterized by lower CO2 emissions.
The aim of this work is to study the evolution of the plasma jets in a different in-cylinder conditions. The activity was carried out in a research optical small spark ignition engine equipped alternatively with standard ignition system and per-chamber. The engine runs at 2000 rpm at wide open throttle in standard ignition condition and slightly turbocharged in pre-chamber condition in order to overcome the decrease of compression ratio. In this activity methane and gasoline were used. Methane was always injected in the pre-chamber and ignited by spark plug; meanwhile gasoline was injected in the main chamber by port fuel injection mode.
The combustion of the pre-chamber methane mixture generates four plasma jets that quickly ignite the mixture made with gasoline/air into the combustion chamber. In this condition the flame speed was much faster than the traditional ignition (gasoline injected in intake manifold without pre-chamber). Using optical data, significant information about the flame propagation in terms of the speeds and radius were obtained. The optical data were correlated with the engine performance and indicated measurements that showed an increase indicated mean effective pressure and coefficient of variation reduction when the pre-chamber was used. Furthermore the effect of pre-chamber ignition on the engine stability and efficiency in stoichiometric and lean-burn operation conditions was investigated.
CitationSementa, P., Catapano, F., Di Iorio, S., Todino, M. et al., "Turbulent Jet Ignition Effect on Exhaust Emission and Efficiency of a SI Small Engine Fueled with Methane and Gasoline," SAE Technical Paper 2020-24-0013, 2020, https://doi.org/10.4271/2020-24-0013.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
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- Parry, M.L., Canziani, O.F., Palutikof, J.P., van der Linder, P.J. et al. , Climate Change 2007: Impacts, Adaptation and Vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the International Panel on Climate Change, Hanson, Eds. (Cambridge, UK: Cambridge University Press, 2007), 976.
- Birol, F. , World Energy Outlook 2010 (International Energy Agency, 2010), 1.
- Alvarez, C.E.C., Couto, E.G., Roso, V.R., Thiriet, A.B. et al. , “A Review of Prechamber Ignition Systems as Lean Combustion Technology for SI Engines,” Applied Thermal Engineering 128:107-120, 2018.
- Toulson, E., Schock, H., and Attard, W. , “A Review of Prechamber Initiated Jet Ignition Combustion Systems,” SAE Technical Paper 2010-01-2263, 2010, https://doi.org/10.4271/2010-01-2263.
- Karim, G.A., and Wierzba, I. , “Comparative Studies of Methane and Propane as Fuels for Spark Ignition and Compression Ignition Engine,” SAE Technical Paper 831196, 1983, https://doi.org/10.4271/831196.
- Rousseau, S., Lemoult, B., and Tazerout, M. , “Combustion Characteristics of Natural Gas in a Lean Burn Spark-Ignition Engine,” Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering 213:481-489, 1999.
- Ayala, F.A. , Combustion Lean Limits Fundamentals and Their Application to a SI Hydrogen-Enhanced Engine Concept (Massachusetts Institute of Technology, 2006).
- Canakci, M. et al. , “Combustion Characteristic of a DI-HCCI Gasoline Engine Running at Different BOOST pressures,” Fuel 96:546-555, 2012.
- Harada, Y., Yamashita, H., Tanaka, T., and Fukube, T. , “Device Foe Controlling Direct-Injection Gasoline Engine,” United States Patent Application 20170058793, assignee: Mazda Motor Corporation, Hiroshima, Japan, 2017.
- Qian, Y., Wang, X., Zhu, L., and Lu, X. , “Experimental Studies on Combustion and Emissions of RCCI (Reactive Controlled Compression Ignition) with Gasoline/n-Heptane and Ethanol/n-Heptane as Fuels,” Energy 88:584-594, 2015.
- Wu, H.M., and Tafrershi, R. , “Air-Fuel Ratio Control of Lean-Burn SI Engines Using LPV-Based Fuzzy Technique,” IET Control Theory Application 12:1414-1420, 2018.
- Catapano, F., Di Iorio, S., Sementa, P., and Vaglieco, B.M. , “Analysis of Energy Efficiency of Methane and Hydrogen-Methane Blends in a PFI/DI SI Research Engine,” Energy 117:378-387, 2016.
- Harada, J., Tomita, T., Mizuno, H., and Mashiki Ito, Y. , “Development of a Direct Injection Gasoline Engine,” SAE Technical Paper 974054, 1997, https://doi.org/10.4271/974054.
- Drake, M.C., Fansler, T.D., and Lippert, A.M. , “Stratified-Change Combustion: Modelling and Imaging of a Spray-Guided Direct-injection Spark-Ignition Engine,” Proceedings of the Combustion Institute 30:2683-2691, 2005.
- Jamrozik, A. , “Lean Combustion by a Pre-Chamber Charge Stratification in a Stationary Spark Ignited Engine,” Journal of Mechanical Science and Technology 29:2269-2278, 2015.
- Sens, M., and Binder, E. , “Pre-chamber Ignition as a Key Technology for Future Powertrain Fleets,” MTZ Worldw 80:44-51, 2019.
- Di Iorio, S., Lazzaro, M., Sementa, P., Vaglieco, B.M. et al. , “Particle Size Distributions from a DI High Performance SI Engine Fueled with Gasoline-Ethanol Blended Fuels,” SAE Technical Paper 2011-24-0211, 2011, https://doi.org/10.4271/2011-24-0211.
- Zigan, L., Schmitz, I., Flugel, A., Wensing, M. et al. , “Structure of Evaporating Single- and Multicomponent Fuel Spray for 2nd Generation Gasoline Direct Injection,” Fuel 90(1):348-363, 2011.
- Maricq, M.M., Szente, J.J., and Jahr, K. , “The Impact of Ethanol Fuel Blends on PM Emissions from a Light-Duty GDI Vehicle,” Aerosol Science and Technology 46:576-583, 2012.
- Myung, C.L., Kim, J., Choi, K., Hwang, I.G. et al. , “Comparative Study of Engine Control Strategies for Particulate Emissions from Direct Injection Light-Duty Vehicle Fueled with Gasoline and Liquid Phase Liquefied Petroleum Gas (LPG),” Fuel 94:348-355, 2012.
- Heywood, J.B. , Internal Combustion Engine Fundamentals (New York: McGraw-Hill Book Co., 1988).
- Cathcart, G., and Tubb, J. , “Application of Air Assisted Direct Fuel Injection to Pressure Charged Gasoline Engines,” SAE Technical Paper 2002-01-0705, 2002, https://doi.org/10.4271/2002-01-0705.
- Boretti, A., Jin, S.H., Brear, M., Zakis, G. et al. , “Experimental and Numerical Study of a Spark Ignition Engine with Air-Assisted Direct Injection,” Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 222:1103-1119, 2008.
- Jin, S.-H., Brear, M., Watson, H., and Brewster, S. , “An Experimental Study of the Spray from an Air-Assisted, Direct Fuel Injector,” IMechE Part D: Journal of Automobile Engineering 222(10):1883-1894, 2008.
- Aliramezani, M., Chitsaz, I., and Mozafari, A.A. , “Thermodynamic Modeling of Partially Stratified Charge Engine Characteristics for Hydrogen-Methane Blends at Ultra-Lean Conditions,” International Journal Hydrogen Energy 38:10640-10647, 2013.
- Cupial, K., Jamrozik, A., and Spyra, A. , “Single and Two-Stage Combustion System in the SI Test Engine,” J. KONES 9:67-74, 2002.
- Rodrigues Filho, F.A. et al. , “E25 Stratified Torch Ignition Engine Performance, CO2 Emission and Combustion Analysis,” Energy Conversion and Management 115:299-307, 2016.
- Karim, G.A. , Dual-Fuel Diesel Engines (CRC Press, 2015).