Análise experimental do desempenho das misturas entre o Éster etílico do óleo de mamona e o óleo diesel convencional

Abstract

The operational effects of the operation of a turbocharged direct injection diesel engine with fuel blends composed of standard diesel fuel and castor oil biodiesel were experimentally studied in order to establish the levels of biodiesel addition which are capable to improve the engine efficiency, fuel consumption, and emissions of a direct injection diesel engine. Interesting results were obtained with the B10 blend (10% biodiesel and 90% diesel by (volume), registering a decrease of 26 g / kWh in the specific consumption under full load conditions. The use of B10 blend did not change significantly the pollutants emitted, except for a modest reduction in emissions of particulate matter. As for the B20 fuel blend, there was an increase of 8 g / kWh on full load consumption as well as a reduction of 29 g / kWh median load condition. Regarding emissions, the use of B20 blend increased the production of nitrogen oxides and unburned hydrocarbons at levels of 5 to 23% compared to conventional diesel fuel, causing a further reduction of about 7% in the emission of particulate matter.