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Effect of Fuel Injection Strategy on the Carbonaceous Structure Formation and Nanoparticle Emission in a DISI Engine Fuelled with Butanol

Author

Listed:
  • Simona Silvia Merola

    (Istituto Motori-Consiglio Nazionale delle Ricerche, 80125 Naples, Italy)

  • Adrian Irimescu

    (Istituto Motori-Consiglio Nazionale delle Ricerche, 80125 Naples, Italy)

  • Silvana Di Iorio

    (Istituto Motori-Consiglio Nazionale delle Ricerche, 80125 Naples, Italy)

  • Bianca Maria Vaglieco

    (Istituto Motori-Consiglio Nazionale delle Ricerche, 80125 Naples, Italy)

Abstract

Within the context of ever wider expansion of direct injection in spark ignition engines, this investigation was aimed at improved understanding of the correlation between fuel injection strategy and emission of nanoparticles. Measurements performed on a wall guided engine allowed identifying the mechanisms involved in the formation of carbonaceous structures during combustion and their evolution in the exhaust line. In-cylinder pressure was recorded in combination with cycle-resolved flame imaging, gaseous emissions and particle size distribution. This complete characterization was performed at three injection phasing settings, with butanol and commercial gasoline. Optical accessibility from below the combustion chamber allowed visualization of diffusive flames induced by fuel deposits; these localized phenomena were correlated to observed changes in engine performance and pollutant species. With gasoline fueling, minor modifications were observed with respect to combustion parameters, when varying the start of injection. The alcohol, on the other hand, featured marked sensitivity to the fuel delivery strategy. Even though the start of injection was varied in a relatively narrow crank angle range during the intake stroke, significant differences were recorded, especially in the values of particle emissions. This was correlated to the fuel jet-wall interactions; the analysis of diffusive flames, their location and size confirmed the importance of liquid film formation in direct injection engines, especially at medium and high load.

Suggested Citation

  • Simona Silvia Merola & Adrian Irimescu & Silvana Di Iorio & Bianca Maria Vaglieco, 2017. "Effect of Fuel Injection Strategy on the Carbonaceous Structure Formation and Nanoparticle Emission in a DISI Engine Fuelled with Butanol," Energies, MDPI, vol. 10(7), pages 1-19, June.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:7:p:832-:d:102251
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    References listed on IDEAS

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    Cited by:

    1. Stanislaw Szwaja & Michal Gruca & Michal Pyrc & Romualdas Juknelevičius, 2021. "Performance and Exhaust Emissions of a Spark Ignition Internal Combustion Engine Fed with Butanol–Glycerol Blend," Energies, MDPI, vol. 14(20), pages 1-15, October.
    2. Zhaojie Shen & Wenzheng Cui & Xiaodong Ju & Zhongchang Liu & Shaohua Wu & Jianguo Yang, 2017. "Numeric Investigation of Gas Distribution in the Intake Manifold and Intake Ports of a Multi-Cylinder Diesel Engine Refined for Exhaust Gas Stratification," Energies, MDPI, vol. 10(11), pages 1-13, November.
    3. Evangelos G. Giakoumis, 2017. "Diesel and Spark Ignition Engines Emissions and After-Treatment Control: Research and Advancements," Energies, MDPI, vol. 10(11), pages 1-4, November.
    4. Suleyman Simsek & Bulent Ozdalyan, 2018. "Improvements to the Composition of Fusel Oil and Analysis of the Effects of Fusel Oil–Gasoline Blends on a Spark-Ignited (SI) Engine’s Performance and Emissions," Energies, MDPI, vol. 11(3), pages 1-13, March.

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