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    Development of a Real Time NOx Prediction Model Based on Heat Release Analysis in a Direct Injection Diesel Engine

    Source: Journal of Engineering for Gas Turbines and Power:;2014:;volume( 136 ):;issue: 003::page 34501
    Author:
    Wang, Dong
    ,
    Zhang, Chao
    DOI: 10.1115/1.4025789
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A prediction model, which describes linear relationship between the nitrogen oxides (NOx) emissions and the incylinder heat release rate in a directinjection diesel engine, was developed through numerical simulations. A modified KIVA3 V code was used to calculate NOx formations and to conduct heat release analyses in a directinjection diesel engine under different operating conditions. The numerical simulation results indicated that the NOx formation amount was related to both the magnitude and the timing of the peak heat release rate in each engine cycle. Based on the above observations, a controloriented dynamic NOx model was constructed and then implemented into a feedback emission control system on a small diesel engine. A new parameter—combustion acceleration—was proposed in this research to describe the intensity of the premixed combustion. Experimental work was also conducted to measure the realtime incylinder pressure at each crankangle when the engine was running and the heat release rate was calculated instantaneously to control an exhaust gas recirculation (EGR) valve. The experimental results showed that the proposed NOx prediction model was effective in controlling NOx emissions under high rpm conditions.
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      Development of a Real Time NOx Prediction Model Based on Heat Release Analysis in a Direct Injection Diesel Engine

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    http://yetl.yabesh.ir/yetl1/handle/yetl/154669
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    • Journal of Engineering for Gas Turbines and Power

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    contributor authorWang, Dong
    contributor authorZhang, Chao
    date accessioned2017-05-09T01:07:27Z
    date available2017-05-09T01:07:27Z
    date issued2014
    identifier issn1528-8919
    identifier othergtp_136_03_034501.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/154669
    description abstractA prediction model, which describes linear relationship between the nitrogen oxides (NOx) emissions and the incylinder heat release rate in a directinjection diesel engine, was developed through numerical simulations. A modified KIVA3 V code was used to calculate NOx formations and to conduct heat release analyses in a directinjection diesel engine under different operating conditions. The numerical simulation results indicated that the NOx formation amount was related to both the magnitude and the timing of the peak heat release rate in each engine cycle. Based on the above observations, a controloriented dynamic NOx model was constructed and then implemented into a feedback emission control system on a small diesel engine. A new parameter—combustion acceleration—was proposed in this research to describe the intensity of the premixed combustion. Experimental work was also conducted to measure the realtime incylinder pressure at each crankangle when the engine was running and the heat release rate was calculated instantaneously to control an exhaust gas recirculation (EGR) valve. The experimental results showed that the proposed NOx prediction model was effective in controlling NOx emissions under high rpm conditions.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDevelopment of a Real Time NOx Prediction Model Based on Heat Release Analysis in a Direct Injection Diesel Engine
    typeJournal Paper
    journal volume136
    journal issue3
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4025789
    journal fristpage34501
    journal lastpage34501
    identifier eissn0742-4795
    treeJournal of Engineering for Gas Turbines and Power:;2014:;volume( 136 ):;issue: 003
    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
    yabeshDSpacePersian