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    Experimental Investigation of a Heavy-Duty Compression-Ignition Engine Retrofitted to Natural Gas Spark-Ignition Operation

    Source: Journal of Energy Resources Technology:;2019:;volume 141:;issue 011::page 112207
    Author:
    Liu, Jinlong
    ,
    Bommisetty, Hemanth Kumar
    ,
    Dumitrescu, Cosmin Emil
    DOI: 10.1115/1.4043749
    Publisher: American Society of Mechanical Engineers (ASME)
    Abstract: Heavy-duty compression-ignition (CI) engines converted to natural gas (NG) operation can reduce the dependence on petroleum-based fuels and curtail greenhouse gas emissions. Such an engine was converted to premixed NG spark-ignition (SI) operation through the addition of a gas injector in the intake manifold and of a spark plug in place of the diesel injector. Engine performance and combustion characteristics were investigated at several lean-burn operating conditions that changed fuel composition, spark timing, equivalence ratio, and engine speed. While the engine operation was stable, the reentrant bowl-in-piston (a characteristic of a CI engine) influenced the combustion event such as producing a significant late combustion, particularly for advanced spark timing. This was due to an important fraction of the fuel burning late in the squish region, which affected the end of combustion, the combustion duration, and the cycle-to-cycle variation. However, the lower cycle-to-cycle variation, stable combustion event, and the lack of knocking suggest a successful conversion of conventional diesel engines to NG SI operation using the approach described here.
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      Experimental Investigation of a Heavy-Duty Compression-Ignition Engine Retrofitted to Natural Gas Spark-Ignition Operation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4258049
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    contributor authorLiu, Jinlong
    contributor authorBommisetty, Hemanth Kumar
    contributor authorDumitrescu, Cosmin Emil
    date accessioned2019-09-18T09:01:50Z
    date available2019-09-18T09:01:50Z
    date copyright5/28/2019 12:00:00 AM
    date issued2019
    identifier issn0195-0738
    identifier otherjert_141_11_112207
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4258049
    description abstractHeavy-duty compression-ignition (CI) engines converted to natural gas (NG) operation can reduce the dependence on petroleum-based fuels and curtail greenhouse gas emissions. Such an engine was converted to premixed NG spark-ignition (SI) operation through the addition of a gas injector in the intake manifold and of a spark plug in place of the diesel injector. Engine performance and combustion characteristics were investigated at several lean-burn operating conditions that changed fuel composition, spark timing, equivalence ratio, and engine speed. While the engine operation was stable, the reentrant bowl-in-piston (a characteristic of a CI engine) influenced the combustion event such as producing a significant late combustion, particularly for advanced spark timing. This was due to an important fraction of the fuel burning late in the squish region, which affected the end of combustion, the combustion duration, and the cycle-to-cycle variation. However, the lower cycle-to-cycle variation, stable combustion event, and the lack of knocking suggest a successful conversion of conventional diesel engines to NG SI operation using the approach described here.
    publisherAmerican Society of Mechanical Engineers (ASME)
    titleExperimental Investigation of a Heavy-Duty Compression-Ignition Engine Retrofitted to Natural Gas Spark-Ignition Operation
    typeJournal Paper
    journal volume141
    journal issue11
    journal titleJournal of Energy Resources Technology
    identifier doi10.1115/1.4043749
    journal fristpage112207
    journal lastpage112207-12
    treeJournal of Energy Resources Technology:;2019:;volume 141:;issue 011
    contenttypeFulltext
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