کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8072914 | 1521434 | 2016 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Combustion and emission performance of a split injection diesel engine in a double swirl combustion system
ترجمه فارسی عنوان
عملکرد احتراق و انتشار یک موتور دیزل تزریق تقسیم شده در سیستم احتراق دو چرخ
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کلمات کلیدی
موتور دیزل، سیستم احتراق سوئیچ دوگانه، تقسیم تزریق، تک آزمایشگاه موتور سیلندر، آزمایش تجسم اسپری، شبیه سازی عددی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
The authors developed and tested a split injection strategy in a double swirl combustion system (DSCS). Different split injection strategies with different ratios of pilot injection fuel to total fuel mass (herein defined as “pilot injection/fuel mass ratios”) and dwell times were compared with an optimized single injection strategy in terms of the break specific fuel consumption (BSFC). The in-cylinder pressure, heat release rate and in-cylinder temperature were analyzed to explore the in-cylinder combustion process. The NOx emission was also measured. With the total fuel mass being 100 mg/cycle and excess air coefficient being 2Â at 2100 r/min at a 5% pilot injection/fuel mass ratio and a 10Â deg dwell time, the BSFC decreased by 2.7% compared with the single injection strategy. The NOx emission increased from 940Â ppm to 1140Â ppm. An 'acceleration effect' helped the DSCS when dwell time was short. A spray visualization experiment and numerical simulations were carried out to explain these phenomena. It is concluded that the split injection condition with a smaller pilot injection/fuel mass ratio and a shorter dwell time performed better than the single injection condition in terms of the thermo-atmosphere utilization, space utilization and acceleration effect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 114, 1 November 2016, Pages 1135-1146
Journal: Energy - Volume 114, 1 November 2016, Pages 1135-1146
نویسندگان
Xiangrong Li, Haobu Gao, Luming Zhao, Zheng Zhang, Xu He, Fushui Liu,