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    Cycle-to-Cycle Feedback for Combustion Control of Spark Advance at the Misfire Limit

    Source: Journal of Engineering for Gas Turbines and Power:;2018:;volume( 140 ):;issue: 010::page 102812
    Author:
    Maldonado, Bryan P.
    ,
    Stefanopoulou, Anna G.
    DOI: 10.1115/1.4039728
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: At a given speed and load, the spark advance (SA) is tuned to reach the maximum brake torque (MBT) timing to maximize efficiency. The use of exhaust gas recirculation (EGR) can further improve fuel economy (FE) at the same speed and load. As EGR increases, MBT moves toward a more advanced timing that can be limited by the high variability in the combustion process, reflected in unacceptable torque fluctuations. This variability is rapidly increased by the random occurrence of partial burns and/or misfires. In order to operate close to the misfire limit, a stochastic misfire controller has been designed to momentarily move from an undesired to an allowable misfire rate, without significantly increasing variability in the combustion process. Control-oriented models for the combustion process and misfire events are discussed. Simulation of the closed-loop system shows that the feedback misfire controller, on average, stays closer to the misfire limit than a more conventional controller designed to react when a misfire is detected.
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      Cycle-to-Cycle Feedback for Combustion Control of Spark Advance at the Misfire Limit

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    • Journal of Engineering for Gas Turbines and Power

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    contributor authorMaldonado, Bryan P.
    contributor authorStefanopoulou, Anna G.
    date accessioned2019-02-28T10:57:57Z
    date available2019-02-28T10:57:57Z
    date copyright7/30/2018 12:00:00 AM
    date issued2018
    identifier issn0742-4795
    identifier othergtp_140_10_102812.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4251238
    description abstractAt a given speed and load, the spark advance (SA) is tuned to reach the maximum brake torque (MBT) timing to maximize efficiency. The use of exhaust gas recirculation (EGR) can further improve fuel economy (FE) at the same speed and load. As EGR increases, MBT moves toward a more advanced timing that can be limited by the high variability in the combustion process, reflected in unacceptable torque fluctuations. This variability is rapidly increased by the random occurrence of partial burns and/or misfires. In order to operate close to the misfire limit, a stochastic misfire controller has been designed to momentarily move from an undesired to an allowable misfire rate, without significantly increasing variability in the combustion process. Control-oriented models for the combustion process and misfire events are discussed. Simulation of the closed-loop system shows that the feedback misfire controller, on average, stays closer to the misfire limit than a more conventional controller designed to react when a misfire is detected.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleCycle-to-Cycle Feedback for Combustion Control of Spark Advance at the Misfire Limit
    typeJournal Paper
    journal volume140
    journal issue10
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4039728
    journal fristpage102812
    journal lastpage102812-8
    treeJournal of Engineering for Gas Turbines and Power:;2018:;volume( 140 ):;issue: 010
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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