INVESTIGATION OF ENGINE PERFORMANCE AND EMISSION LEVEL OF SI ENGINE RUNNING WITH DIFFERENT RON FUEL GRADES

Abstract—This paper discuss about engine performance and emission characteristic produced by gasoline vehicle by using different type of RON fuel grades and brands. This investigation involves engine performance test using chassis dynamometer and emission measurement with portable combustion analyzer. In the engine performance analysis, the engine first is tested using chassis dynamometer with different type of RON fuel grades (RON 95, RON97) from different manufacturers. Chassis dynamometer test will show the engine performance graph which includes power, torque and brake specific fuel consumption (BSFC). Next, the emission test is performed to validate and compare the data of emission level produced by vehicle. This emission test will run in condition of vehicle on idle and running by using chassis dynamometer with different type of RON fuel grades and brands. In this project the standard procedure of fuel and emission testing using chassis dynamometer have been successfully established. At the end of the project, results will show which type of RON fuel grades and brands produced higher engine performance, better fuel economy and less emission level. Further experimental test could be implemented utilizing engine dynamometer to obtain better result for fuel testing with improved instrumentation control

The Assumption of Unlimited Human Wants (AUHW) in Islamic Economics

Purpose: This study examines the assumption of unlimited human wants in Islamic economics where tasawur is brought into play. Design/methodology/approach: Drawing from the analytical approach, the present study presents new concepts of unlimited human wants. The assumpion of unlimited human wants (AUHW) was taken by Islamic economists and therefore altered and assimilated with Islamic elements so that it can be known as the assumption of Islamic economics. The question is, does the assumption of AUHW accept in Islamic economics? If fits, what are the assumptions of unlimited human wants parallel with Islamic tasawur? The data employed were drawn from Library research. The contents and textual analyses were employed to achieve this purpose. Findings: This study found out that the assumption of AUHW was parallel with tasawur and for that, they are suitable for Islamic economics. Research limitations/implications: This study examines a new approach to measure unlimited human wants in Islamic context. Our contributions are confined to this area – human wants. Our study also limits its perspective on the general context of tasawur. Future works can provide specific perspectives on unlimited human wants covering different geographies. Practical implications: This study provides a new parameter for Muslims to manager their resources according to Islam. Originality/value: This study introduces a new measure of addressing unlimited human wants among Muslims