کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6639875 | 461153 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A semi-detailed chemical kinetic model of a gasoline surrogate fuel for internal combustion engine applications
ترجمه فارسی عنوان
یک مدل سینتیک شیمیایی نیمه دقیق سوخت جایگزین بنزینی برای کاربردهای موتور احتراق داخلی
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کلمات کلیدی
سوخت جایگزین بنزین، مکانیسم نیمه دقیق، مدل سازی جنبشی شیمی، موتور احتراق داخلی، اشتعال خودکار،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
A semidetailed chemical kinetic mechanism (473 species and 1267 reactions) to describe the oxidation of a gasoline surrogate fuel consisting of n-heptane, iso-octane, toluene and diisobutylene (DIB) is developed. The model shows generally good agreement with the experimental ignition delay times measured in shock tubes for not only individual components but also their various mixtures over a wide range of temperatures and pressures. Although both simulations and experiments indicate toluene has a promoting effect on the auto-ignition of iso-octane in a specific region, the effect of toluene addition to isooctane is still not fully resolved. Nonetheless, it is found that the reactions of benzyl radical with allene are not important for the kinetic interactions. The measured laminar burning velocities of a research gasoline fuel, CR-87, can be well reproduced by using a TRFÂ +Â DIB mixture (C6H5CH3/iC8H18/nC7H16/JC8H16, 45/25/20/10% by liquid volume) as a surrogate. In a homogeneous charge compression ignition (HCCI) engine, the model can capture the shift in resistance to auto-ignition for such TRFÂ +Â DIB fuel when the operating conditions change. A sensitivity analysis shows the chemical origin of such shift cannot be solely explained based on the extent to which NTC (negative temperature coefficient) behavior is absent. The effect of decreasing the inlet temperature and increasing the inlet pressure is a result of the concerted action of manifold factors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 113, November 2013, Pages 347-356
Journal: Fuel - Volume 113, November 2013, Pages 347-356
نویسندگان
Yifeng Wang, Mingfa Yao, Zunqing Zheng,