کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7719526 | 1497494 | 2014 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical study of effects of reformed exhaust gas recirculation (REGR) on dimethyl ether HCCI combustion
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Numerical study of effects of reformed exhaust gas recirculation (REGR) on dimethyl ether HCCI combustion Numerical study of effects of reformed exhaust gas recirculation (REGR) on dimethyl ether HCCI combustion](/preview/png/7719526.png)
چکیده انگلیسی
The effects of reformed exhaust gas recirculation (REGR) on combustion and emissions of dimethyl ether (DME) homogeneous charge compression ignition (HCCI) engines are studied by multi-dimensional CFD coupled with chemical kinetic model. The results show that REGR combing EGR and DME reformed gases (DRG) improves combustion and emissions. REGR can delay ignition time by both EGR and DRG, and makes main combustion closer to top dead center (TDC), which is beneficial to reducing compression negative work and broadening load range of HCCI engines. The interaction of DRG and EGR helps avoid too high pressure rise rate or low power performance when being applied independent of each other. HC, CO and NOx emissions can be controlled simultaneously by REGR. Both advantages of DRG and EGR are used to decrease the emissions of HCCI engines by REGR, while the disadvantages of high emissions are alleviated when one of them is applied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 15, 15 May 2014, Pages 8106-8117
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 15, 15 May 2014, Pages 8106-8117
نویسندگان
Zhaolei Zheng, Chuntao Liu, Xiaoyu Zhang,