Investigation on Performance of Laboratory based DI Diesel Engine using Semi-Stable Diesel-Sesame Seed Oil Emulsion and with Neat Sesame Seed Oil

S. Chandra Prasad, I.N. Niranjan Kumar, S.K. Bhatti, and B.V.A. Rao (India)


C7112, DC11, FFT & time waveforms, piezo-electric transducer, eddy current dynamometer.


There is a serious necessity to reduce the fossil fuel consumption by some furnaces or for the engines is a new trend to save the exhaustible fuels. Scientists and engineers concentrated on inexhaustible bio-fuels in lieu of petroleum products without changing the basic configuration of the engine. There are success rates, which are reported with blended fuels with reasonably small implementation cost. The technique of emulsifying diesel with vegetable oil [1-5] intending to increase the performance of the engine and reduce the pollution has originated ever since the second half of the 20th century. Research has been focused on vegetable oil emulsification. There is a necessity to bring about the changes in the engine parameters as the percentage concentration of vegetable oil (low boiling point liquid) in the diesel emulsion is increasing. Several experiments have been conducted to prove the feasibility for the conventional engine. With the extent of vegetable oil percentage in the diesel-vegetable oil emulsion the usage of the diesel oil can be discounted which means saving of the depletable fuel benefited at the same time with lower CO, CO2, & SO2 emissions [6-9]. The author investigated the performance of vegetable oils blending with diesel oil using micro emulsion technique and tried to evaluate their compatibility with diesel oil for possible partial/ total replacement. The experimental setup is shown in fig 1, using the vibration analyzer (DC-11), the engine recorder. The software C7112 (for engine data analysis) and On-Time (for engine vibration analysis), are used to analyze the data obtained. The AVL exhaust gas analyzer is used to find out the soot content of the exhaust gases. The standard experimental procedure is adopted for making sesame seed oil-diesel blends with the suitable surfactant. An algorithm was developed on the basis of the pressure crank angle data collected by the engine recorder to derive the important parameters like P-V, log pressure Log volume, heat release rate per degree of crank angle etc. It is observed that there is an improvement in the heat release rate and other engine parameters and appreciable reduction in the overall vibration levels with respect to the increase in the vegetable oil percentage in the emulsion [11, 14].

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