کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8071690 1521398 2018 25 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An investigation of the efficiency of using O2 and H2 (hydrooxile gas -HHO) gas additives in a ci engine operating on diesel fuel and biodiesel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
An investigation of the efficiency of using O2 and H2 (hydrooxile gas -HHO) gas additives in a ci engine operating on diesel fuel and biodiesel
چکیده انگلیسی
In a vehicle with a CI (compression ignition) engine, the power of the latter rotates an electric generator to produce a mixture of hydrogen (H2) and oxygen (O2) gas (hydrooxile - HHO, later just HHO) by water electrolysis. Low HHO content levels in air (0.14-0.18% of the volume) combined with air in cylinders of the CI engine affect the energy and environmental performance of the engine. It was found through stand tests and numerical modeling that chemically active hydrogen starts to ignite at the end of the compression stroke when the pressure and temperature rise prior to fuel injection into the cylinder. Early hydrogen ignition and supplemental energy consumption for HHO gas production worsen the energy performance of the engine and increase concentrations of carbon dioxide (CO2) and nitrogen oxide (NOx) in the exhaust gas. However, H2 and O2 additives reduce concentrations of incomplete combustion products (carbon monoxide (CO) and hydrocarbons (HC)) as well as the smokiness of the exhaust. When diesel fuel is replaced with biodiesel and when HHO gas is added, the indicated efficiency of the engine changes insignificantly; however, concentrations of CO and HC in the exhaust gas and smoke levels are reduced markedly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 152, 1 June 2018, Pages 640-651
نویسندگان
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