Effect of hydrogen enrichment and TiO2 nanoparticles on waste cooking palm biodiesel run CRDI engine.

In this study, we deal with the production and utilization of waste-cooking palm biodiesel (WCB) and. evaluated the influence of the addition of titanium dioxide (TiO 2) nanoparticles in hydrogen-enriched single-cylinder CRDI diesel engine. XRD, SEM, and EDX decide the structure and morphology of TiO 2 nanoparticles. The TiO 2 nanoparticles were dispersed in the tested fuels at a dosage of 50–75 ppm with the aid of ultra-sonication. Based on the oxidation stability study, the B20 + 75 ppm (TiO 2) fuel blend is the pilot fuel for the engine test. Further, the engine is enriched with a hydrogen (H 2) flow of 10 lpm. Results revealed that the performance parameters were improved with the addition of H 2 enrichment and TiO 2 nanoparticles compared to D. The brake thermal efficiency of the engine was improved by 8.21%. In comparison, brake-specific fuel consumption decreased by 42.86%. Furthermore, adding nanoparticles also reduced CO and HC emissions by 74% and 27.27%, respectively, whereas the NO x emission was slightly increased. Thus, the findings demonstrated that hydrogen-enriched nanoparticles added to biodiesel might be considered a substitute for fossil fuels and report a positive impact on diesel engine performance without requiring significant modifications. • Waste cooking palm oil biodiesel, H 2 , and TiO 2 nanoparticles are used to run engine. • The mass flow rate of hydrogen is kept constant at 10 lpm. • The tested fuels contained 75 ppm of TiO 2 nanoparticles. • BTE has improve by 8.21% over neat diesel. • CO and HC decreased by 74%, and 27.27%, respectively, with an increase in NO x. [ABSTRACT FROM AUTHOR]