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    A Study of Lean Burn Pre-Chamber Concept in a Heavy Duty Engine

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    Thumbnail
    Name:
    SAE-19ICENA-0042 - Final Version.pdf
    Size:
    2.815Mb
    Format:
    PDF
    Description:
    Accepted manuscript
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    Type
    Conference Paper
    Authors
    Hlaing, Ponnya
    Echeverri Marquez, Manuel
    Shankar, Vijai cc
    Cenker, Emre
    Ben Houidi, Moez cc
    Johansson, Bengt cc
    KAUST Department
    Clean Combustion Research Center
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2019-09-09
    Permanent link to this record
    http://hdl.handle.net/10754/660610
    
    Metadata
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    Abstract
    Due to stringent emission standards, the demand for higher efficiency engines has been unprecedentedly high in recent years. Among several existing combustion modes, pre-chamber spark ignition (PCSI) emerges to be a potential candidate for high-efficiency engines. Research on the pre-chamber concept exhibit higher indicated efficiency through lean limit extension while maintaining the combustion stability. In this study, a unique pre-chamber geometry was tested in a single-cylinder heavy-duty engine at low load lean conditions. The geometry features a narrow throat, which was designed to be packaged inside a commercial diesel injector pocket. The pre-chamber was fueled with methane while the main chamber was supplied with an ethanol/air mixture. The 'avalanche activated combustion' or L.A.G. process was explored which relies on enriched pre-chamber combustion to generate radicals which, upon being discharged into the main combustion chamber, will trigger ignition sites distributed in the combustion chamber, thus achieving fast combustion. The ability of PCSI concept to enhance the lean limit with progressive enrichment in the pre-chamber was demonstrated. In addition, passive pre-chamber concept, where no additional fuel was injected into pre-chambers, was also explored and compared against the fueled pre-chamber experiments. The processed data features fast combustion rates with high combustion stability with the evident extension of the lean combustion limit. The engine-out emissions, measured by the exhaust gas analyzer, were reported together with the combustion data.
    Citation
    Hlaing, P., Echeverri Marquez, M., Bhavani Shankar, V. S., Cenker, E., Ben Houidi, M., & Johansson, B. (2019). A Study of Lean Burn Pre-Chamber Concept in a Heavy Duty Engine. SAE Technical Paper Series. doi:10.4271/2019-24-0107
    Sponsors
    The paper is based upon work supported by Saudi Aramco Research and Development Center FUELCOM 3 program under Master Research Agreement Number 6600024505/01. FUELCOM (Fuel Combustion for Advanced Engines), is a collaborative research undertaking between Saudi Aramco and KAUST intended to address the fundamental aspects of hydrocarbon fuel combustion in engines, and develop fuel/ engine design tools suitable for advance combustion modes.The author would like to thank King Abdullah University of Science and Technology (KAUST) and the Clean Combustion Research Center (CCRC) for lab facilities and research support. Last but not least, the authors would like to convey gratitudetowards the IC Engine Lab Safety Supervisor Adrian I. Ichim and the lab technician Riyad H. Jambi for their kind input and assistance in performing the experiments.
    Publisher
    SAE International
    Conference/Event name
    SAE 14th International Conference on Engines and Vehicles, ICE 2019
    DOI
    10.4271/2019-24-0107
    Additional Links
    https://www.sae.org/content/2019-24-0107/
    ae974a485f413a2113503eed53cd6c53
    10.4271/2019-24-0107
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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