Experimental study of bioethanol addition to enhance power efficiency and torque in the C-series 100 engine

Abstract

This study evaluates the effect of adding bioethanol to Pertamax fuel at concentrations of 10%, 15%, and 20% on the performance of a C-series 100 gasoline engine. Using a quasi-experimental design, tests were conducted with a dynamometer to measure changes in power (horsepower) and torque at various time intervals. The results showed that the addition of 20% bioethanol resulted in a significant improvement, with a peak power of 3.6 HP and a maximum torque of 36.2 N·m at 3.78 seconds, indicating more efficient combustion due to the higher octane rating and oxygen content in bioethanol, which enhances the combustion process. The 15% blend also delivered positive results with a peak power of 3.3 HP and torque of 32.79 N·m at 4.54 seconds, while the 10% blend showed more moderate gains. Despite the performance improvements, attention should be paid to potential long-term side effects such as corrosion and changes in the engine's lubrication characteristics due to bioethanol's hygroscopic properties. These findings reinforce the role of bioethanol as an eco-friendly and efficient alternative fuel in improving vehicle performance while reducing carbon emissions. This research significantly contributes to the automotive industry and policymakers developing sustainable fuel technologies. It serves as a reference for optimizing bioethanol blends to achieve a balance between enhancing engine performance and component durability.