Performance impact of the application of castor oil biodiesel in diesel engines

Abstract

ABSTRACT:The use of renewable fuels, such as the biodiesel, can ease the demand of fossil fuel for the power generation and transportation fields in rural area. In this work, the performance impact of the application of castor oil biodiesel is evaluated with an automotive and a stationary diesel engine. The application of B20 and B10 biodiesel blends and pre-heated net biodiesel is considered. The viability of the employment of B10 and B20 blends to mobility and power generation was observed from dynamometric bench tests, where this blends performed similar to fossil diesel. With the pre-heated net biodiesel, however, a brake torque loss and a specific consumption increase were observed with relation to diesel fuel. KEYWORDS:Biodiesel, Castor Oil, Diesel Engine, Dynamometric Bench Tests. IMPACTO DA UTILIZAÇÃO DO BIODIESEL DO ÓLEO DE MAMONA NO DESEMPENHO DE MOTORES DIESELRESUMO: A utilização de fontes renováveis de energia, como o biodiesel, pode coibir o uso dos combustíveis fósseis empregados na geração de potência e no transporte rural. Neste trabalho, avaliou-se o impacto operacional da aplicação do biodiesel de mamona em um motor diesel automotivo e em um motor diesel estacionário de médio porte, estudando-se as alterações provenientes da utilização deste biocombustível puro preaquecido e, como misturas, B10 e B20. Observou-se em bancada a viabilidade de aplicação das misturas B10 e B20, tanto em mobilidade quanto em geração de trabalho elétrico, pois as mesmas obtiveram desempenho similar ou superior ao do diesel mineral. Contudo, resultados inferiores de torque de frenagem e um aumento no consumo específico foram obtidos com o biodiesel de mamona preaquecido B100 com relação ao óleo diesel. PALAVRAS-CHAVE:Biodiesel, Óleo de Mamona, Motor Diesel, Ensaio Dinamométrico.

Statitionary Engine Performance Using Mixture of Soybean and Castor Bean Biodiesel to Diesel Oil

“…The binary mixtures with higher proportions of biodiesel can promote good performance of diesel engine, considering the increase in cetane number in mixtures containing higher levels of biodiesel, which improves the combustion of the fuel in the combustion chamber. In addition, studies show that the engine presents better thermal efficiency with the use of larger proportions of biodiesel, which contributes to increase the performance (Monteiro et al, 2013).…”

“…The biodiesel from soybean is one of the most susceptible to oxidation, unlike castor bean biodiesel that presents greater stability and, in mixture with the soybean, promotes an increase in the resistance time to oxidative factors (Carvalho et al, 2013). However, particular physical-chemical characteristics of castor bean biodiesel, such as high viscosity, make difficult to use this biodiesel, and necessary to investigate the effects of this fuel on the performance of internal combustion engines (Monteiro et al, 2013).…”

Assessment of Variation in Castor Genetic Resources for Oil Characteristics

“…Castor seed is a good feedstock for biodiesel production, although a serious concern is its high kinematic viscosity. Kinematic viscosity of castor oil is 14.51 cSt-a value considerably higher than the maximum of 5.5 cSt specified by the National Petroleum Agency for fuel used in diesel engines [12]. However, this problem can be reduced by converting castor oil into fatty acid methyl or ethyl esters by transesterification.…”

Otimização Estatística Da Produção De Biodiesel a Partir De Óleos Residuais De Frituras Em Rota Etílica

“…Cada litro de óleo despejado no esgoto tem capacidade para poluir cerca de um milhão de litros de água. Além disso, essa contaminação prejudica o funcionamento das estações de tratamento de água (MONTEIRO et al, 2013).…”