effect of biodisel/petrodiesel blends of the mechanical/environmetal perfomance of genies

Abstract

In this paper, the results of the mechanical and environmental performance of a stationary petrodiesel engine (rated power: 19 HP) and a diesel engine of a tractor (rated power: 50.5 HP)are reported. Different mixtures of biodiesel from castor oil, palm oil and used frying oil (AFU), mixed with petrodiesel in percentage proportions of biodiesel/petrodiesel 0/100 (D100), 10/90 (B10), 20/80 (B20) and 30/70 (B30) were used. The mechanical performance was evaluated using a hydraulic dynamometer, and gaseous emissions were measured with an Orsat gas analyzer. The mechanical power, specific fuel consumption, efficiency, and percentage of CO, O2, CO2 and other gases, for each mixture were determined. It was found that for the stationary engine, the mixture 10% palm diesel -10% castor diesel and 80% petrodiesel (PB10/HB10/D80) reported a reduction in fuel consumption, and the combustion gas composition is similar to D100, but lower than the mixture 20% palm diesel and 80% petrodiesel (PB20/D80) mixture. For the tractor diesel engine, it was found that the 5% palm diesel -5% castor diesel -10% AFU and 80% petrodiesel (PB5/HB5/AFUB10/D80) mixture presented better performance in power and fuel consumption, with 32.35 kW and 224.83 g/KWh, respectively; while the 3.33% palm diesel -3.33% castor diesel - 3.33% AFU and 90% petrodiesel (PB3.33/HB3.33/AFUB3.33/D90) mixture reported a better combustion compared to 10% palm diesel - 90% petrodiesel (PB10/D90), showing an increase in the production of CO2 and a decrease in CO production.