Performance Modeling of Single Cylinder CI Engine Fuelled With Blend of Diesel and Pyrolysis Using Taguchi Method

An experimental study has been carried out for pyrolysis oil blended with diesel used in single cylinder diesel engine. Pyrolysis oil is obtained from tire waste by pyrolysis process. Pyrolysis process is a thermo- chemical decomposition of organic matter in absence of oxygen. Blending of pyrolysis oil with diesel in maximum possible proportion helps to reduce the consumption of diesel fuel. In this study, the effects of parameters` i.e. load, blend proportion and injection pressure are taken as variable for optimization. As the experiment required simultaneously optimization of three parameters with five levels, taguchi method of optimization is used in this experiment. The results of the taguchi experiment identifies that 5% blend ratio, injection pressure 150 bar and engine load 20kg are optimum parameter setting for highest mechanical efficiency and 10% blend ratio, injection pressure 150 bar and engine load 20kg are optimum parameter setting for highest brake thermal efficiency and 25% blend ratio, injection pressure 230 and engine load 4kg are optimum parameter setting for lowest specific fuel consumption. Engine performance is mostly influenced by engine load and is least influenced by injection pressure for mechanical efficiency and for brake thermal efficiency and for specific fuel consumption engine performance is mostly influenced by injection pressure and is least influenced by engine load. Confirmation experiment was done using optimum combination showed that mechanical efficiency, brake thermal efficiency and specific fuel consumption were found by experiment is closer to the predicated value.