Improvement of Emissions in a DI Diesel Engine Fuelled by Bio-diesel Fuel and Waste Cooking Oil

This study investigates the effect of using waste cooking oil (WCO) and Bio-diesel Fuel (BDF) of WCO on combustion performance and exhaust emissions compared with diesel fuel (JIS#2) in a direct injection diesel engine. Results show that WCO and BDF emit higher concentration of SOF at low load compared with JIS#2. A study on blending WCO and BDF with several percentage of JIS#2 reveals that reduction of kinematic viscosity would be able to improve SOF emissions at low load. SOF emission also can be reduced by using high squish combustion chamber which continues high turbulence combustion in the chamber.