کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5145137 | 1497338 | 2017 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effects of hydrogen on the combustion, performance and emissions of a turbo gasoline direct-injection engine with exhaust gas recirculation
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کلمات کلیدی
ITEPWMIMEPCA10-90EGRBMEPaTDCNOx - NOXCOV - THEEmissions - انتشاراتNitrogen oxides - اکسید نیتروژنIndicated thermal efficiency - بازده حرارتی نشان داده شده استthermal efficiency - بازدهِ گرمایی یا بازده حرارتیafter top dead center - بعد از مرده مردهbrake mean effective pressure - ترمز فشار متوسط موثرCombustion stability - ثبات احتراقCarbon dioxide - دیاکسید کربنCrank Angle - زاویه میل لنگCoefficient of Variation - ضریب تغییرPulse width modulation - مدولاسیون عرض پالسcarbon monoxide - منوکسیدکربنIndicated mean effective pressure - نشان دهنده فشار متوسط موثر استmap - نقشهHydrogen - هیدروژن hydrocarbon - هیدروکربنCO2 - کربن دیاکسیدexhaust gas recirculation - گردش بازگشتی گاز اگزوز
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effects of hydrogen on the combustion characteristics, thermal efficiency, and emissions of a turbo gasoline direct-injection engine with exhaust gas recirculation (EGR) were investigated experimentally at brake mean effective pressures of 4, 6, and 8 bar at 2000 rpm. Four cases of hydrogen energy fraction (0%, 1%, 3% and 5%) of total fuel energy were studied. Hydrogen energy fraction of total fuel energy was hydrogen energy in the sum of energy of consumed gasoline and added hydrogen. The test results demonstrated that hydrogen addition improved the combustion speed and reduced cycle-to-cycle variation. In particular, cylinder-to-cylinder variation dramatically decreased with hydrogen addition at high EGR rates. This suggests that the operable EGR rate can be widened for a turbo gasoline direct-injection engine. The improved combustion and wider operable EGR rate resulted in enhanced thermal efficiency. However, the turbocharging effect acted in opposition to the thermal efficiency with respect to the EGR rate. Therefore, a different strategy to improve the thermal efficiency with EGR was required for the turbo gasoline direct-injection engine. HC and CO2 emissions were reduced but NOX emissions increased with hydrogen addition. The CO emissions as a function of engine load followed different trends that depended on the level of hydrogen addition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 39, 28 September 2017, Pages 25074-25087
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 39, 28 September 2017, Pages 25074-25087
نویسندگان
Joonsuk Kim, Kwang Min Chun, Soonho Song, Hong-Kil Baek, Seung Woo Lee,