Enhancing Efficiency and Reducing Emissions in a CRDI Single Cylinder Diesel Engine: Novel Insights from Titanium Dioxide (TiO2) Coated Piston and Kapok Oil Biodiesel with EGR Implementation

This groundbreaking research delves into the improved efficiency and Characteristic emissions of a ceramic-coated CRDI diesel engine with single cylinder, utilizing Titanium Dioxide (TiO2) as the innovative coating material. The study explores the performance of both conventional diesel (D100) and kapok oil biodiesel (KOBD40) through extensive experiments conducted under varying load conditions. The application of a Plasma spray coating method to the piston reveals noteworthy outcomes. Comparative analysis between coated and non-coated pistons demonstrates a remarkable increase in brake thermal efficiency, coupled with a reduction in specific fuel consumption and overall emissions, except for NOX. While acknowledging the challenge of increased NOX emissions, the study proposes the mitigation strategy of adjusting exhaust gas recirculation into the engine combustion chamber, along with advanced fuel injection techniques. Importantly, the research highlights a significant advantage of thermal coating in mitigating thermal fatigue on engine components