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    Blending Octane Number of Toluene with Gasoline-like and PRF Fuels in HCCI Combustion Mode

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    Type
    Conference Paper
    Authors
    Waqas, Muhammad cc
    Masurier, Jean-Baptiste cc
    Sarathy, Mani cc
    Johansson, Bengt cc
    KAUST Department
    Chemical Engineering Program
    Clean Combustion Research Center
    Combustion and Pyrolysis Chemistry (CPC) Group
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2018-04-03
    Permanent link to this record
    http://hdl.handle.net/10754/627588
    
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    Abstract
    Future internal combustion engines demand higher efficiency but progression towards this is limited by the phenomenon called knock. A possible solution for reaching high efficiency is Octane-on-Demand (OoD), which allows to customize the antiknock quality of a fuel through blending of high-octane fuel with a low octane fuel. Previous studies on Octane-on-Demand highlighted efficiency benefits depending on the combination of low octane fuel with high octane booster. The author recently published works with ethanol and methanol as high-octane fuels. The results of this work showed that the composition and octane number of the low octane fuel is significant for the blending octane number of both ethanol and methanol. This work focuses on toluene as the high octane fuel (RON 120). Aromatics offers anti-knock quality and with high octane number than alcohols, this work will address if toluene can provide higher octane enhancement. Our aim is to investigate the impact of three gasoline-like fuels and two Primary Reference Fuels (PRFs). More specifically, fuels are FACE (Fuels for Advanced Combustion Engines) I, FACE J, FACE A, PRF 70 and PRF 84. A CFR engine was used to conduct the experiments in HCCI mode. For this combustion mode, the engine operated at four specific conditions based on RON and MON conditions. The octane numbers corresponding to four HCCI numbers were obtained for toluene concentration of 0, 2, 5, 10, 15 and 20%. Results show that the blending octane number of toluene varies non-linearly and linearly with the increase in toluene concentration depending on the base fuel, experimental conditions and the concentration of toluene. As a result, the blending octane number can range from close to 150 with a small fraction of toluene to a number closer to that of toluene, 120, with larger fractions.
    Citation
    Waqas MU, Masurier J-B, Sarathy M, Johansson B (2018) Blending Octane Number of Toluene with Gasoline-like and PRF Fuels in HCCI Combustion Mode. SAE Technical Paper Series. Available: http://dx.doi.org/10.4271/2018-01-1246.
    Sponsors
    The experimental facilities were provided by the Clean Combustion Research Center and the author is quite thankful for the support. The paper was published with the funding from King Abdullah University of Science and Technology (KAUST) and Saudi Aramco.
    Publisher
    SAE International
    Journal
    SAE Technical Paper Series
    Conference/Event name
    2018 SAE World Congress Experience, WCX 2018
    DOI
    10.4271/2018-01-1246
    Additional Links
    https://saemobilus.sae.org/content/2018-01-1246
    ae974a485f413a2113503eed53cd6c53
    10.4271/2018-01-1246
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Chemical Engineering Program; Mechanical Engineering Program; Clean Combustion Research Center

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