Performance and Emission Characteristics of a Diesel Engine Fueled with Diesel and Orange Oil Blends Using Different Bowl-In Piston Geometries

Biomass derived fuels have a potential to replace fossil fuels that are used in transportation. Orange oil is considered as one of the possible alternative biofuels for compression ignition (CI) engines, as it is renewable and available in a significant quantity throughout the world. It is a biomass derived fuel obtained from orange skin, which has 90% D-limonene. In this study an orange oil diesel blend is used as a test fuel in a single cylinder, four stroke, direct injection (DI) diesel engine with a power output of 4.4 kW at a rated speed of 1500 rpm to assess the performance and emission parameters of the engine, when the engine is run with three different piston geometries. The experimental results of the performance and emission parameters of the engine for the orange oil operation were compared with those of the diesel operation of the same engine and presented in this paper.