کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6633250 | 461092 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Homogeneous charge compression ignition (HCCI) combustion of polyoxymethylene dimethyl ethers (PODE)
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کلمات کلیدی
ΦmEGRHCCIIMEPHTHRMPRRSOIPODELTHRCOV - THEHeat release - آزادی حرارتیHomogenous charge compression ignition - احتراق فشرده شار همگنLow temperature heat release - انتشار گرما در دمای پایینDICI - بگوMaximum Pressure Rise Rate - حداکثر سرعت افزایش فشارRoHR - روهرHomogeneous Charge Compression Ignition - سوپاپ فشرده سازی همگنCoefficient of Variation - ضریب تغییرAbsorption coefficient - ضریب جذبcarbon monoxide - منوکسیدکربنRate of heat release - نرخ انتشار گرماEquivalence ratio - نسبت متعادلIndicated mean effective pressure - نشان دهنده فشار متوسط موثر استhydrocarbon - هیدروکربنpolyoxymethylene dimethyl ethers - پلی اتیلن دی متیل اترexhaust gas recirculation - گردش بازگشتی گاز اگزوزHigh temperature heat release - گرما آزاد شده در دمای بالا
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Polyoxymethylene dimethyl ethers (PODE) are a promising alternative fuel for diesel engines. PODE have high volatility, high ignitability and high oxygen content, and is thus also an ideal additive fuel for blend and dual-fuel combustion due to its low-temperature chemistry. In this work, the characteristics of PODE homogenous charge compression ignition (HCCI) combustion are investigated for the first time. The effects of charge mass equivalence ratio (Φm) and exhaust gas recirculation (EGR) on PODE HCCI are studied. The results indicate that PODE HCCI exhibits two-stage ignition with a strong low temperature heat release (LTHR) before the high temperature heat release (HTHR). HTHR switches from one-stage to two-stage with an increase of Φm due to rapid CO oxidation. At a specific EGR rate, with an increase of Φm, the end-of-compression charge temperature decreases, the ignition timing of LTHR delays. With an increase of Φm, the ignition timing of the HTHR advances at the EGR lower than 42%, but it delays at the EGR of 52% in general. For a specific Φm, with an increase of EGR, the end-of-compression charge temperature decreases, the ignition timing of both LTHR and HTHR delays, and the combustion duration of the HTHR increases. CO emissions decrease with an increase of Φm and a decrease of EGR. Φm and EGR have only a slight effect on HC emissions. This work also provides fundamental data of PODE combustion characteristics for the future development of PODE reaction mechanisms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 183, 1 November 2016, Pages 206-213
Journal: Fuel - Volume 183, 1 November 2016, Pages 206-213
نویسندگان
Zhi Wang, Haoye Liu, Xiao Ma, Jianxin Wang, Shijin Shuai, Rolf D. Reitz,