کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7162026 | 1462856 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of higher n-butanol addition on combustion and performance of GDI engine in stoichiometric combustion
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کلمات کلیدی
aTDCBSFCFFVAFRBMEPECUCA50COV - THEafter top dead center - بعد از مرده مردهbrake mean effective pressure - ترمز فشار متوسط موثرbrake specific fuel consumption - ترمز مصرف سوخت خاصBrake thermal efficiency - راندمان حرارتی ترمزCoefficient of Variation - ضریب تغییرcarbon monoxide - منوکسیدکربنAir Fuel Ratio - نسبت سوخت هواelectronic control unit - واحد کنترل الکترونیکیBTE - وسایل کمک
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An experimental study was carried out on a turbocharged gasoline direct injection (GDI) engine fueled by n-butanol/gasoline blends. Effects of n-butanol percents (15%, 30%, and 50%) on combustion and performance of the engine operating on stoichiometric combustion condition were discussed and also compared with pure gasoline in this paper. The results indicate that n-butanol/gasoline blends increase combustion pressure and pressure rise rate, fasten burning rate, and shorten ignition delay and combustion duration, as compared to pure gasoline. Moreover, these trends are impacted more evidently with increased n-butanol fraction in the blends. In addition, higher n-butanol percent of gasoline blends increase combustion temperature but decrease the temperature in the later stage of expansion stroke, which contributes to the control of exhaust temperature at high-load. With regards to engine performance, higher n-butanol percent in the blends results in increased brake specific fuel consumption (BSFC) and higher brake thermal efficiency (BTE). However, higher n-butanol addition helps to improve combustion stability but shows slightly higher knock possibility in high-load. In that case, the knock trend could be weakened by retarding ignition timing. Moreover, higher n-butanol addition significantly decreases NOx emissions, but it increases CO emissions obviously.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 106, December 2015, Pages 385-392
Journal: Energy Conversion and Management - Volume 106, December 2015, Pages 385-392
نویسندگان
Zheng Chen, Feng Yang, Shuo Xue, Zhenkuo Wu, Jingping Liu,