In this study, 18 soapnut biodiesel-diesel blends along with soapnut oil as an additive in some blends were prepared and used in a diesel engine to investigate the effect of oxygen content in the fuel blends on engine performance and emission characteristics. Considering the large variations in the oxygen content of these fuel blends, the obtained results were demonstrated based on varying fuel oxygen content. Findings showed that the best engine performance was achieved with a fuel oxygen content in the range of 1.8%-3.0%, whereas the best engine emissions were obtained with a fuel oxygen content in the range of 0.71%-2.37%. Hence, considering both engine performance and emissions, the optimal zone of fuel oxygen content was found to be in the range of 1.80%-2.37%. Thus, it can be concluded that biodiesel blended fuels having an oxygen content in the aforesaid range can be successfully used in diesel engines with comparable engine performance and emissions to those using diesel fuel. Nevertheless, further research is required to reduce the fuel oxygen content to this optimal range if the blends consist of higher biofuel components. Besides that, the use of suitable additives in the biodiesel blended fuels may be a viable option to achieve the said purpose, which needs further research.
Only energy analysis is not enough to define the best efficiencies of any system, so exergy analysis uses to understand and improve the actual efficiencies of the whole system. Energy analysis identified the energy losses but could neither identify the irreversible losses nor their location. These are, however, could be clearly explained with the application of exergy analysis. In this study both energy and exergy analyses were performed in a singlecylinder, 4-stroke, 7 bhp, water cooled diesel engine fuelled with petrodiesel as a base fuel and palm biodeisel. The objectives of the analyses are to determine whether the fuel made any significant difference on the efficiencies of the engine. The fuel exergy, exergy loss due to exhaust gases, exergy loss due to cooling water, exergy destruction, and exergetic efficiency of the engine are obtained by using the experimental data at steady-state condition. The results of tested biodiesel showed a similar type energetic performance as petrodiesel fuel.Reference to this paper should be made as follows: Misra, R.D., Jena, J. and Murthy, M.S. (2013) 'Energy and exergy analyses of a CI engine fuelled with palm biodiesel based on experimental data', Int.
In the present work,18 numbers of soapnut biodiesel-diesel blends along with soapnut oil as additive in some cases were used in a compression ignition engine forcomparative assessment of the effect of fuel blends on the engine performance. Considering the large variations in oxygen content of the fuel blends it was opted as the basis for the study. Results showed that the best engine performance is achieved with oxygen content in the fuel blends in the range 1.8-3.0%. The emission results showed that the best engine emission is obtained for oxygen content in the fuel blends in the range 0.71-2.37%. Considering engine performance and emissions, the critical zone of oxygen content was found to be in the range 1.8-2.37%. The fuel blends having oxygen content within this critical zone, i.e. fuel blend nos. 8-13 were found to be best with higher engine performance and lower exhaust emissions.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.