Effects of green synthesized copper oxide nanoparticle additive on diesel engine performance and emission characteristics

The use of copper oxide nanoparticles (CuONPs) as an additive for diesel engines shows much promise in reducing emissions. Because copper is a transition metal, it helps reduce emissions by transferring heat from the engine to the exhaust. In this study, experimental research was carried out to find out the impact of copper oxide (CuO) made from Cherry laurel leaves (Prunus laurocerasus) extract on a diesel engine using a new green synthetic strategy. The existence of synthesized CuO was examined by UV, XRD, SEM, EDS, and FTIR. According to the green synthesis results, a CuO peak was obtained at 330 nm in the UV analysis. In addition, according to XRD, EDS, and SEM analyses, it was seen that CuO had a crystal and circular structure and consisted of 100% CuO. In engine experiments, CuONPs were mixed with diesel at different rates such as 10 ppm and 15 ppm. In the results, the D100 + 15 ppm CuO mix shows a notable decrease in carbon monoxide (CO) and hydrocarbon (HC) emissions 45.9% and 19.57%, compared to pure diesel at 2000W. Moreover, it was revealed that the brake specific fuel consumption (BSFC) of the D100 + 15 ppm CuO mixture at 3000 W decreased by 1.80% compared to diesel. However, both smoke and NOx increased with nanoparticles as compared to diesel.