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Experimental Comparative Study on Performance and Emissions of E85 Adopting Different Injection Approaches in a Turbocharged PFI SI Engine

Author

Listed:
  • Cinzia Tornatore

    (Istituto Motori-CNR-via Marconi, 4-80125 Napoli, Italy)

  • Luca Marchitto

    (Istituto Motori-CNR-via Marconi, 4-80125 Napoli, Italy)

  • Maria Antonietta Costagliola

    (Istituto Motori-CNR-via Marconi, 4-80125 Napoli, Italy)

  • Gerardo Valentino

    (Istituto Motori-CNR-via Marconi, 4-80125 Napoli, Italy)

Abstract

This study examines the effects of ethanol and gasoline injection mode on the combustion performance and exhaust emissions of a twin cylinder port fuel injection (PFI) spark ignition (SI) engine. Generally, when using gasoline–ethanol blends, alcohol and gasoline are externally mixed with a specified blending ratio. In this activity, ethanol and gasoline were supplied into the intake manifold into two different ways: through two separated low pressure fuel injection systems (Dual-Fuel, DF) and in a blend (mix). The ratio between ethanol and gasoline was fixed at 0.85 by volume (E85). The initial reference conditions were set running the engine with full gasoline at the knock limited spark advance boundary, according to the standard engine calibration. Then E85 was injected and a spark timing sweep was carried out at rich, stoichiometric, and lean conditions. Engine performance and gaseous and particle exhaust emissions were measured. Adding ethanol could remove over-fueling with an increase in thermal efficiency without engine load penalties. Both ethanol and charge leaning resulted in a lowering of CO, HC, and PN emissions. DF injection promoted a faster evaporation of gasoline than in blend, shortening the combustion duration with a slight increase in THC and PN emissions compared to the mix mode.

Suggested Citation

  • Cinzia Tornatore & Luca Marchitto & Maria Antonietta Costagliola & Gerardo Valentino, 2019. "Experimental Comparative Study on Performance and Emissions of E85 Adopting Different Injection Approaches in a Turbocharged PFI SI Engine," Energies, MDPI, vol. 12(8), pages 1-15, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:8:p:1555-:d:225617
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    References listed on IDEAS

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    1. Costagliola, M.A. & De Simio, L. & Iannaccone, S. & Prati, M.V., 2013. "Combustion efficiency and engine out emissions of a S.I. engine fueled with alcohol/gasoline blends," Applied Energy, Elsevier, vol. 111(C), pages 1162-1171.
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    3. Kun-Ho Chen & Yei-Chin Chao, 2019. "Characterization of Performance of Short Stroke Engines with Valve Timing for Blended Bioethanol Internal Combustion," Energies, MDPI, vol. 12(4), pages 1-13, February.
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    5. Mohsin Raza & Longfei Chen & Felix Leach & Shiting Ding, 2018. "A Review of Particulate Number (PN) Emissions from Gasoline Direct Injection (GDI) Engines and Their Control Techniques," Energies, MDPI, vol. 11(6), pages 1-26, June.
    6. Wu, Xuesong & Daniel, Ritchie & Tian, Guohong & Xu, Hongming & Huang, Zuohua & Richardson, Dave, 2011. "Dual-injection: The flexible, bi-fuel concept for spark-ignition engines fuelled with various gasoline and biofuel blends," Applied Energy, Elsevier, vol. 88(7), pages 2305-2314, July.
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    2. Łukasz Warguła & Mateusz Kukla & Piotr Lijewski & Michał Dobrzyński & Filip Markiewicz, 2020. "Influence of Innovative Woodchipper Speed Control Systems on Exhaust Gas Emissions and Fuel Consumption in Urban Areas," Energies, MDPI, vol. 13(13), pages 1-22, June.

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