ABSTRACT
Concerns about the effect of activities that need the use of alternative fuels, as well as a growth in demand for clean energy, have made biofuels research more well-known, and so began the search for oilseed plants that can be used to make biodiesel. Present research was carried out the aloe vera oil is used as a biodiesel in diesel engine. Because aloe vera oil having higher calorific value compare to other sources. Potassium hydroxide catalyst was used for transesterification process, which has lesser cost and more availability. And also, in this work conducted diesel engine experiments using four different biodiesel blends (B20, B40, B60, B100) and diesel fuel. Additionally, to reduce the emission nano particles (TiO2) was blended with optimal biodiesel blend (B20). The performance and emission characteristics were conducted with different biodiesel blends. In this blends, B20+ TiO2 blend gives good performance and reduction in emissions compared to other biodiesel blends.