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Heat release and engine performance effects of soybean oil ethyl ester blending into diesel fuel |
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| Authors: | Andre Valente Bueno,José Antonio Velá squez,Luiz Fernando Milanez |
| Affiliation: | a Mechanical Engineering Department, Federal University of Ceara, CEP 60455-760, Fortaleza, CE, Brazil b Mechanical Engineering Department, Pontifical Catholic University of Parana, CEP 80215-901, Curitiba, PR, Brazil c Mechanical Engineering Department, Federal Technical University of Parana, CEP 80230-901, Curitiba, PR, Brazil d Mechanical Engineering Faculty, University of Campinas, CEP 13083-970, Campinas, SP, Brazil |
| Abstract: | The engine performance impact of soybean oil ethyl ester blending into diesel fuel was analyzed employing heat release analysis, in-cylinder exergy balances and dynamometric tests. Blends with concentrations of up to 30% of soybean oil ethyl ester in volume were used in steady-state experiments conducted in a high speed turbocharged direct injection engine. Modifications in fuel heat value, fuel-air equivalence ratio and combustion temperature were found to govern the impact resulting from the addition of biodiesel on engine performance. For the analyzed fuels, the 20% biodiesel blend presented the best results of brake thermal efficiency, while the 10% biodiesel blend presented the best results of brake power and sfc (specific fuel consumption). In relation to mineral diesel and in full load conditions, an average increase of 4.16% was observed in brake thermal efficiency with B20 blend. In the same conditions, an average gain of 1.15% in brake power and a reduction of 1.73% in sfc was observed with B10 blend. |
| Keywords: | Diesel engine Soybean ethyl ester biodiesel Engine performance Exergy analysis |
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