Evaluating The Performance Of Single Cylinder Petrol Engine Working On Different Types Of Gasoline Fuel Used In Iraq

摘要

An experimental study has been conducted in Baghdad Technical Institute to evaluate the gasoline fuel that used in Iraq and their effects on petrol engine performance. A single cylinder four stroke air cooled petrol engine was used in this research, the engine fixed on a test engine rig that consists of a hydraulic dynamometer (that used to connect with engine outlet shaft to dominate and control the load) and instrumentation unit which contains of many devices that measure the fuel consumption, exhaust gas temperature, engine speed and torque. Four types of gasoline fuel were used which include imported gasoline named (A1).Shuaiba gasoline (A2), Al-Daura gasoline (A3) and Nasiriya gasoline (A4). The engine was run on three levels of speed 1500, 2000and 2500 rpm with three levels of loads 2,4 and 6 Nm respectively. The engine performance that were studied includes brake specific fuel consumption (bsfc), brake specific energy consumption (bsec), brake thermal efficiency (BTE) and exhaust gas temperature (EGT). The experimental results were statistically analyzed by using the split-split plot design and SAS (2012) software based on a complete randomized design (CRD) within three replications. The least significant difference (LSD 0.05) under probability of 0.05 was utilized to compare the means of treatments. Results obtained from this research showed that gasoline fuel type (Al) registered the lowest rate for bsfc and bsec while this fuel showed the highest rate in BTE and EGT 45.26% and 553C° respectivelyunder engine speed 2500rpm and load 6Nm.