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Using ducted fuel injection to attenuate or prevent soot formation in mixing-controlled combustion strategies for engine applications

Author

Listed:
  • Gehmlich, R.K.
  • Mueller, C.J.
  • Ruth, D.J.
  • Nilsen, C.W.
  • Skeen, S.A.
  • Manin, J.

Abstract

Ducted fuel injection is a strategy that can be used to enhance the fuel/charge-gas mixing within the combustion chamber of a direct-injection compression-ignition engine. The concept involves injecting the fuel through a small tube within the combustion chamber to make the most fuel-rich regions of the micture in the autoignition zone leaner relative to a conventional free-spray configuration (i.e., a fuel spray that is not surrounded by a duct). This study is a follow-on to initial proof-of-concept experiments that also were conducted in a constant-volume combustion vessel. While the initial natural luminosity imaging experiments demonstrated that ducted fuel injection lowers soot incandescence dramatically, this study adds a more quantitative diffuse back-illumination diagnostic to measure soot mass, as well as investigates the effects on performance of varying duct geometry (axial gap, length, diameter, and inlet and outlet shapes), ambient density, and charge-gas dilution level. The result is that ducted fuel injection is further proven to be effective at lowering soot by 35–100% across a wide range of operating conditions and geometries, and guidance is offered on geometric parameters that are most important for improving performance and facilitating packaging for engine applications.

Suggested Citation

  • Gehmlich, R.K. & Mueller, C.J. & Ruth, D.J. & Nilsen, C.W. & Skeen, S.A. & Manin, J., 2018. "Using ducted fuel injection to attenuate or prevent soot formation in mixing-controlled combustion strategies for engine applications," Applied Energy, Elsevier, vol. 226(C), pages 1169-1186.
    • Handle: RePEc:eee:appene:v:226:y:2018:i:c:p:1169-1186
    DOI: 10.1016/j.apenergy.2018.05.078
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    Cited by:

    1. Zdzisław Bielecki & Marek Ochowiak & Sylwia Włodarczak & Andżelika Krupińska & Magdalena Matuszak & Robert Lewtak & Jarosław Dziuba & Ernest Szajna & Dariusz Choiński & Marcin Odziomek, 2021. "The Analysis of the Possibility of Feeding a Liquid Catalyst to a Coal Dust Channel," Energies, MDPI, vol. 14(24), pages 1-14, December.
    2. Łukasz Rymaniak & Michalina Kamińska & Natalia Szymlet & Rafał Grzeszczyk, 2021. "Analysis of Harmful Exhaust Gas Concentrations in Cloud behind a Vehicle with a Spark Ignition Engine," Energies, MDPI, vol. 14(6), pages 1-16, March.
    3. Daniel Romeo Kamta Legue & Zacharie Merlin Ayissi & Mahamat Hassane Babikir & Marcel Obounou & Henri Paul Ekobena Fouda, 2021. "Experimental and Simulation of Diesel Engine Fueled with Biodiesel with Variations in Heat Loss Model," Energies, MDPI, vol. 14(6), pages 1-17, March.
    4. Djati Wibowo Djamari & Muhammad Idris & Permana Andi Paristiawan & Muhammad Mujtaba Abbas & Olusegun David Samuel & Manzoore Elahi M. Soudagar & Safarudin Gazali Herawan & Davannendran Chandran & Abdu, 2022. "Diesel Spray: Development of Spray in Diesel Engine," Sustainability, MDPI, vol. 14(23), pages 1-22, November.
    5. Zhang, Min & Ong, Jiun Cai & Pang, Kar Mun & Bai, Xue-Song & Walther, Jens H., 2022. "Large eddy simulation of soot formation and oxidation for different ambient temperatures and oxygen levels," Applied Energy, Elsevier, vol. 306(PB).
    6. Wu, Shaohua & Zhou, Dezhi & Yang, Wenming, 2019. "Implementation of an efficient method of moments for treatment of soot formation and oxidation processes in three-dimensional engine simulations," Applied Energy, Elsevier, vol. 254(C).

    More about this item

    Keywords

    Soot; Duct; Diesel; Spray; Mixing; Combustion;
    All these keywords.

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