Uji Kinerja Mesin Diesel Menggunakan Beberapa Variasi Biosolar Beraditif Minyak Kayu Manis

Abstract

The limited availability of fossil fuels and the high emissions from conventional fuels have driven the development of enviroNmentally friendly alternative energy sources. Biodiesel is a promising option; however, its lower calorific value often reduces engine performance. Therefore, innovation through the use of natural bioadditives is needed to enhance combustion quality. Cinnamon oil (Cinnamomum burmannii) was selected as a bioadditive due to its oxygenated compounds—such as cinnamaldehyde, eugenol, and linalool—which can improve the combustion process. This study aims to analyze the effect of various biosolar blends with the addition of cinnamon oil bioadditive on diesel engine performance. The experiment employed a factorial completely randomized design (CRD) with treatment factors consisting of biosolar concentrations (B50, B65, and B80), cinnamon oil additive levels (0%, 0.5%, and 1%), and three levels of shaft rotation speed (1.800 rpm, 2.000 rpm, and 2.200 rpm). The evaluated parameters included power, torque, voltage, electric current, fuel consumption, specific fuel consumption (SFC), and exhaust gas opacity. The results showed that increasing the proportion of biodiesel in the biosolar blend decreased engine performance, while the addition of up to 1% cinnamon oil improved combustion efficiency and reduced exhaust emissions. The best performance was obtained from the B50 blend with 1% cinnamon oil additive at 2.200 rpm, producing the highest power and electric current along with the lowest fuel consumption. In conclusion, the addition of cinnamon oil as a bioadditive in biosolar effectively enhances diesel engine performance and reduces emissions, supporting the development of sustainable and eco-friendly fuel alternatives.