The use of a mixture of bioethanol from jackfruit peel and pertalite on the performance of a 4 stroke motorbike engine

The use of fossil fuels or oil fuels in Indonesia is still the most frequently used energy source. One energy source that can be used as alternative energy is bioethanol. There are three groups of plant sources of bioethanol, namely plants containing starch, glucose and cellulose. The use of jackfruit skin is still quite limited, because only the fruit is used. Bioethanol in four-stroke motors can cause changes in vehicle engine performance. This research aims to analyze the torque, power and fuel consumption of motorbikes using a mixture of jackfruit peel bioethanol and pertalite. Researchers will make jackfruit peel bioethanol as a mixture of pertalite fuel and apply it to motorbikes with a composition of 10%, 20% and 30% bioethanol. Testing was carried out starting with engine speed from 3000 – 9000 rpm using 1000 rpm intervals. This type of research is experimental, the data analysis technique used is the descriptive method. Test result data in tabular form is converted into graphs to be explained in simple sentences that are easy to understand. Increasing the concentration of bioethanol in the fuel mixture causes engine performance to increase. This is proven by the highest torque obtained on BP20 (20% bioethanol with 80% pertalite) of 18.10 Nm at an engine speed of 6000 rpm. The highest power was obtained from BP10 (10% bioethanol with 90% pertalite) of 18.53 HP at an engine speed of 8000 rpm. The lowest fuel consumption rate for the fuel tested was a mixture of BP30% (30% bioethanol with 70% pertalite) of 2.80 L/hour.