کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4768520 | 1424957 | 2017 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Computational optimization of a reactivity controlled compression ignition (RCCI) combustion system considering performance at multiple modes simultaneously
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The optimization study resulted in an optimum CR of 13.1 with a bowl geometry that has two distinctive regions to benefit the low load and high load operating conditions, respectively. Results also showed that a narrow spray angle for diesel fuel and a wide spray angle for gasoline would be necessary to target the two different regions in the bowl. The optimal fueling strategy had very low gasoline percentage at low load (â¼15% of the total fuel mass) and a high gasoline percentage (â¼92% of the total fuel mass) at the high load condition. From the study on the effect of weighting the efficiencies, it was found that when low load is given a higher weighting, a higher CR piston (CR â¼15.7) was chosen as the optima while giving a higher weighting to high load led to a lower CR (CR â¼11.8) piston as the optima. Results also showed that prioritizing one load highly over the other would yield a bowl geometry that negatively affects the performance at the other load condition - indicating that an optimization must consider both the operating modes simultaneously.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 207, 1 November 2017, Pages 702-718
Journal: Fuel - Volume 207, 1 November 2017, Pages 702-718
نویسندگان
Chaitanya Kavuri, Sage L. Kokjohn,