Experimental study to improve engine performance using gasoline-methanol blends

مقدم أطروحة جامعية

Hasan, Wisam Husayn

مشرف أطروحة جامعية

al-Khishali, Qutaybah J. M.

الجامعة

الجامعة التكنولوجية

الكلية

-

القسم الأكاديمي

قسم الهندسة الكهروميكانيكية

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2010

الملخص الإنجليزي

This study is an experimental investigation of the effect of methanol addition to gasoline on the performance (brake power, brake specific fuel consumption, thermal efficiency, and volumetric efficiency), and emission (carbon dioxide CO2, carbon monoxide CO, hydrocarbons HC) of a spark ignition engine.

The experimental tests were carried out on a single cylinder, four stroke variable compression “Varicomp” Dual Diesel /Petrol cycles with a Dynamometric test unit type (GR0306/000/037A).

The tests were carried out at controlled throttle variable speed condition over the range of 850 to 225٠ rpm with compression ratios CR=5, 7, and 9 using various blends of methanol/gasoline (10%, 20% and 30% methanol by volume).

It is found that the best engine performance, maximum power output, and minimum brake specific fuel consumption, occur at M10 fuel blend for all compression ratios, and the best compression ratio for the gasoline used is CR=7.

The power output from the M10 fuel blend showed an increase about 49.3% over than that for gasoline at CR=7.

The addition of methanol indicated an increase in CO2 emissions about 75.3%, and a decrease in CO emissions about 48% over than those for the gasoline at CR=7, while the increase of CO2 emissions about 4.08% and the decrease in CO emissions about 10.5% are over than those for the gasoline at CR=9.

Hydrocarbon emissions HC is found to be with minimum levels for high compression ratio (CR7 and CR=9) when using M30 blend while for CR=5 the minimum levels of HC emissions were shown with the gasoline and M10 blend.

التخصصات الرئيسية

الهندسة الميكانيكية

الموضوعات

• الوقود
• السيارات
• محركات الديزل
• الأداء
• الوقود البديل

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-305260