Comparative evaluation of diesel engine performance and emission characteristics using carbon nanotubes & graphene oxide in ternary fuel (jojoba biodiesel-diesel-methanol) blends
Swati Agarwal, Ankita Yadav, Anurag Mudgal, Suphiya Khan
Abstract
Currently, fossil fuels are encountering difficulties as a result of rising expenses, growing demand, and their detrimental effects on environmental contamination. This study aimed to create a mixture of biodiesel and market diesel by using jojoba oil. This mixture was then combined with potential additives, including SWCNT, MWCNT, GO, and Methanol, to enhance the efficiency and combustion of the diesel engine. The composition of the fuel sample was selected based on its proven ability to improve fuel characteristics and engine performance while reducing harmful emissions. The tested characteristics included various fuel properties such as viscosity, flash point, pour point, melting point, density, acid value, cetane number, and calorific value. Additionally, engine performance parameters such as brake-specific fuel consumption (BSFC), brake thermal efficiency (BTE), power, ignition delay, and heat release rate were evaluated. Furthermore, engine emissions including carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons (HC), and soot were measured for a full-load diesel engine. The addition of carbon nanotubes (CNTs) and graphene oxide (GO) to fuel blends was shown to significantly improve power output, resulting in a 26.2 % reduction in brake thermal efficiency (BTE) and a drop in brake-specific fuel consumption (BSFC) by 0.29 kg/KW h. The findings also showed a substantial reduction in engine emissions as a consequence of incorporating carbon nanotubes (CNTs) and graphene oxide (GO) into the diesel-biodiesel mixture.