PENGARUH BIOPERTALITE DARI UMBI PORANG (AMORPHOPHALLUS ONCOPHYLLUS) TERHADAP KINERJA MESIN HONDA VARIO 125CC TAHUN 2021

Abstract

The increasing number of motorised vehicles as public transport has resulted in increased demand for fuel oil, while petroleum reserves are decreasing every year. Sustainable use of renewable fuels is needed to reduce dependence on the use of fuel oil, namely by utilising tuber starch into bioethanol. Bioethanol produced from tuber starch, one of which is porang tuber starch, contains about 35% oxygen so that it has a high octane number and can be used as an additive to fuel oil to reduce exhaust emissions. This study aims to analyse the effect of pure pertalite fuel and biopertalite of  porang tuber on the performance of Honda Vario 125 cc motorcycle engine in 2021 (torque, effective power/wheel power, fuel consumption, average effective pressure, and thermal efficiency). Honda Vario 125cc experimental test engine in 2021 using chassis dynamometer instrument test equipment. Engine performance testing using SAE J1349 testing standards full open throttle valve test method with engine speed variations from 3000 rpm to 9000 rpm. Data analysis using quantitative descriptive method. The results of the engine performance testing showed that E50 had the greatest effect. This is evidenced by the torque of 12,22 Nm at 5000 rpm, effective power/wheel power of 10,57 HP at 8000 rpm, bmep of 12,54 kgf/cm2 at 5000 rpm, and thermal efficiency of 20,20% at 4000 rpm.

Keywords: pertalite, bioethanol, biopertalite, porang tuber, engine performance