Document Details

Document Type : Thesis 
Document Title :
Investigating the effect of using ethanol - unleaded gasoline blend on performance and emissions in SI engine
التحقيق في تأثير استخدام مزيج الايثانول - البنزين الخالي من الرصاص على الأداء والانبعاثات في محرك الإشعال بالشرارة
 
Subject : Faculty of Engineering - Department of Thermal Engineering and Desalination Technology 
Document Language : Arabic 
Abstract : This study aims to explore the effects of using ethanol- unleaded gasoline fuel blends on engine performance and exhaust gas emissions in a spark ignition engine. A four-stroke, single cylinder SI engine was used for conducting this study. The tested ethanol was blended with unleaded gasoline in four ratios (0, 5, 10 and 15 vol. %). The engine performance and exhaust gas emissions were evaluated at a variety of engine operating conditions using an engine dynamometer setup. The results showed that blending of unleaded gasoline with ethanol increases the brake torque, brake power, brake mean effective pressure, volumetric and brake thermal efficiencies and reduce the brake specific fuel consumption. Also the results showed the better combustion characteristics inside the engine cylinder when ethanol is added. The carbon monoxide (CO) and carbon dioxide (CO₂) emission concentrations in the engine exhaust decrease, while the nitric oxide (NO) and oxygen (O₂) concentrations increase. The 15 percent ethanol blend was found to be the best substitution that achieves higher engine performance and lower exhaust gas emissions over other used blends. 
Supervisor : Dr. Nafis Anwarulhaq Ahmad 
Thesis Type : Master Thesis 
Publishing Year : 1433 AH
2012 AD 
Co-Supervisor : Dr. Ahmad Yahya Bokhary 
Added Date : Sunday, July 15, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
عبدالرحمن يحيى البهكليAL-Bahkali, Abdulrahman YahiaResearcherMaster 

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