International Journal of Engineering and Technology

Ever increasing demand on fossil fuels and environmental degradation with their use concern the global utilization of internal combustion engines in industrial, automotive and power sectors.An alternate to high pollutant diesel derived from renewable energy sources should be environment friendly, economically cheaper, technically feasible without compromising the engine performance and should provide energy security. Non-edible oils such as linseed oil, karanja, jatropha, and mahua etc., are mostly preferable. In this study, linseed oil derived from flax seed plant is chosen and blended it with diesel in proportions of 10%, 20% and 30%. Performance and emission characteristics of linseed oil blends (L10, L20 and L30) and the diesel are investigated at constant speed in a diesel engine with nozzle opening pressure of 200 bar. The experiment is repeated for different injection pressures (220 and 240 bar) and the results are compared with baseline diesel. Brake specific energy consumption (BSEC) for biodiesel blends is comparable to diesel fuel at all loads and fuel injection pressures (FIPs). Brake thermal efficiency (BTE) is optimum for biodiesel blends at injection pressure of 200 bar. Diesel has shown high mechanical efficiency than biodiesel blends at FIPs 220 and 240 bar. Carbon emissions are less with diesel compared to biodiesel blends.