کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1732077 | 1521461 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of air dilution and effective compression ratio on the combustion characteristics of a HCCI (homogeneous charge compression ignition) engine fuelled with n-butanol
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of air dilution and effective compression ratio on the combustion characteristics of a HCCI (homogeneous charge compression ignition) engine fuelled with n-butanol Effect of air dilution and effective compression ratio on the combustion characteristics of a HCCI (homogeneous charge compression ignition) engine fuelled with n-butanol](/preview/png/1732077.png)
چکیده انگلیسی
Biobutanol, i.e. n-butanol, is a promising biofuel of internal combustion engines. In this work, HCCI (homogeneous charge compression ignition) operation was achieved on a single cylinder four-stroke n-butanol engine through altering EVC (exhaust valve closing) timings and/or IVC (intake valve closing) timings when the amount of fuel injected in a cycle was fixed. To retard HCCI autoignition timing, the effect of air dilution (excess air) and ECR (effective compression ratio) on combustion event was investigated. The results show that air dilution and the decrease in ECR can retard the autoignition timing of n-butanol and effectively decrease the MPRR (maximum pressure rise rate) of the HCCI engine. However, the delayed autoignition timing caused by diluted air is restricted by combustion instability. Furthermore, in the case of air dilution, the indicated thermal efficiency is higher and the temperature at IVC timing is lower while the in-cylinder temperature to initiate autoignition is higher compared with that of decreased ECR. In addition, air dilution is more effective in reducing the MPRR, but leads to longer combustion duration as compared to decreased ECR.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 85, 1 June 2015, Pages 296-303
Journal: Energy - Volume 85, 1 June 2015, Pages 296-303
نویسندگان
Mao-Bin Liu, Bang-Quan He, Hua Zhao,