PENGARUH PERBANDINGAN CAMPURAN BIOETANOL DAN GASOLINE TERHADAP KARAKTERISTIK GASOHOL DAN KINERJA MESIN KENDARAAN BERMOTOR

THE INFLUENCE OF COMPARISON OF BIOETHANOL AND GASOLINE MIXTURE TOWARD GASOHOL CHARACTERISTIC AND PERFORMANCE OF VEHICLE MACHINE (Nurul Kholidah, 2014, 41 pages, 17 tables, 10 pictures, 5 attachment) Scarcity of fuel, especially gasoline has become a major issue in recent years, so it must be done immediately by searching an alternative fuels, one of which is the use of gasohol fuel which is a mixture of ethanol and gasoline with a certain ratio, this is due to biofuels (bioethanol) can not stand alone as a pure substitute for conventional fuels. This study aims to determine the effect of blending ratio on the characteristics of bioethanol and gasoline and gasohol motor vehicle engine performance. In this study, the bioethanol used is fermented cassava bioethanol with 94% levels with a ratio of bioethanol and gasoline (0:100%), (7:93%), (10:90%) and (14:86%). From the study, there was obtained some results that the gasohol which had the closest characteristic with gasoline is a mixture of (7: 93%) while the variation of the fuel mix of bioethanol and gasoline are still within the range of tolerance characteristic properties of gasoline. For testing the performance of the vehicle's engine, there was an increasing fuel consumption and decreasing levels of exhaust emissions, which is the largest consumption of 1.34 L / hour and the lowest levels of exhaust emissions with O2 levels by 18.7%, amounting to 335 ppm CO, and CO2 1.2% in a mixture of bioethanol and gasoline ratio (14: 86%). Keywords: Gasoline,Bioethanol,Characteristics of Gasohol, Vehicle Performanc