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    Experimental and analytical study on liquid and vapor penetration of high-reactivity gasoline using a high-pressure gasoline multi-hole injector

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    Type
    Article
    Authors
    Du, Jianguo
    Mohan, Balaji
    Sim, Jaeheon
    Fang, Tiegang
    Roberts, William L. cc
    KAUST Department
    Mechanical Engineering Program
    Clean Combustion Research Center
    Physical Sciences and Engineering (PSE) Division
    Date
    2019-07-29
    Online Publication Date
    2019-07-29
    Print Publication Date
    2019-12
    Permanent link to this record
    http://hdl.handle.net/10754/658599
    
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    Abstract
    Spray penetration length is an important parameter which is of great interest to both experimentalists and modelers. As it affects engine efficiency and emissions, measurement and prediction of spray penetration can significantly benefit engine optimization under various operating conditions. In this study, penetration length was investigated in a pre-burn constant volume combustion chamber using a gasoline multi-hole injector with high reactivity gasoline-like fuel designed explicitly for gasoline compression ignition (GCI) engines. Diffused back illumination (DBI) and shadowgraph were implemented for liquid and vapor phase penetration measurements, respectively. Different pre-burn gas mixtures are compared to investigate the influence of ambient gas properties on gasoline spray penetration under evaporating conditions. The liquid penetration under the gas composition of higher molecular weight tends to be longer. However, the vapor penetration showed insignificant effect under different gas compositions. Ambient gas temperature and gas composition were found to be an essential parameter for liquid phase penetration. Pressure difference was found to affect the vapor penetration length while its influence on liquid phase steady state penetration length at high ambient gas temperature is marginal. Statistical analysis was performed for both liquid and vapor phase penetration lengths, and a prediction model was developed with good agreement to the data under all test conditions.
    Sponsors
    This work was sponsored by Saudi Aramco under the FUELCOM II program and by King Abdullah University of Science and Technology.
    Publisher
    Elsevier BV
    Journal
    Applied Thermal Engineering
    DOI
    10.1016/j.applthermaleng.2019.114187
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S1359431119331461
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.applthermaleng.2019.114187
    Scopus Count
    Collections
    Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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