An experimental study of a diesel engine with varying injection timing fuelled with used cooking methyl ester blend adulterated with copper oxide particles

Abstract

The current work explores the experimental investigation of a CI engine fuelled using waste cooking oil methyl ester blend. Waste cooking oil was transesterified using a base-type esterification process and later blended with diesel fuel to form a B20 blend. Thereafter, this blend was doped with a homogenous method to prepare copper oxide additives with ppm levels of 10, 20, 30, and 40 creating four nano fuel blends. These four CuO blends and base blend i.e. B20 blend was fuelled in a diesel engine. Later, the outcomes of the engine were compared with diesel. The BTE values rise with 23° before the top dead center (TDC) with 20 ppm of WCO20 blend. Furthermore, with the increase in nano additives (CuO nanoparticles in WCO20 blend), the NOx emission is increased.