-An experimental study has been carried out for palm seed oil blended with diesel used in a single cylinder diesel engine. Palm seed oil is obtained from the seeds of palm tree. In this study, the effects of parameters` i.e. load, compression ratio and injection pressure are taken as variable for optimization. As the experiment required simultaneously optimization of three parameters with three levels, Taguchi method of optimization is used in this experiment. The results of the Taguchi experiment identify that 16 compression ratio, injection pressure 180 bar and engine load 10kg are optimum parameter setting for highest brake thermal efficiency. Engine performance is mostly influenced by engine load and is least influenced by compression ratio. Confirmation experiment was done using an optimum combination showed that the brake thermal efficiency was found by experiment is closer to the predicted value.

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