کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6767831 512461 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of injection strategies and fuel injector configuration on combustion and emission characteristics of a D.I. diesel engine fueled by bio-diesel
ترجمه فارسی عنوان
تأثیر استراتژی های تزریق و پیکربندی انژکتور سوخت بر ویژگی های احتراق و انتشارات یک موتور دیزل موتور سوخت زیستی سوخت
کلمات کلیدی
موتور دیزل، سوخت بیولوژیکی، احتراق چند جزء، استراتژی تزریق، پیکربندی انژکتور،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
A multi-dimensional computational fluid dynamics (CFD) modeling was conducted on a D.I. (Direct Injection) diesel engine fueled by bio-diesel based on KIVA4 code. Comprehensive chemistry prediction of bio-diesel fuel was taken into account by enhancing the combustion model of the default KIVA4 code. An advanced multi-component fuel combustion model was applied to accurately predict the oxidation of saturated and unsaturated agents of the bio-diesel fuel using a reduced chemical kinetics mechanism. In order to accurately model spray, atomization and evaporation of the bio-diesel fuel, detailed thermophysical properties of fuel components were predicted and tabulated in the fuel routine of the KIVA4 code. After the validation for cylinder pressure and heat release rate at engine mid load with experimental engine tests, further numerical studies were performed to investigate effects of injection strategies such as double and triple injection pulses and axial location of injector nozzle. It has been found that cylinder peak pressure was increased by applying double and triple injections and some enhancements on output power was also observed. Moreover, it was found that nozzle axial location has considerable effect on combustion of the bio-diesel fuel where wall impingement of the liquid bio-diesel fuel resulted in lower evaporation and higher unburnt hydro carbon (UHC) emission.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 76, April 2015, Pages 687-698
نویسندگان
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