Enhanced engine performance and corrosion mitigation via novel modified oil filters in biodiesel-driven internal combustion engines

Purpose The purpose of this study is to evaluate the performance of a modified engine oil filter in biodiesel-driven internal combustion engines. Specifically, it aims to assess the filter’s effectiveness in improving engine oil properties, reducing wear and corrosion, and enhancing engine longevity. Design/methodology/approach The study investigates the impact of a modified engine oil filter on biodiesel-driven engines. The filter was designed using 3D modeling, machining and chemical modifications to enhance durability. Engine tests were conducted for 100 h, with oil samples extracted at 20-hour intervals. Physiochemical properties, including viscosity, total acid number (TAN), total base number (TBN) and wear characteristics, were analyzed. Tribological tests, including HFRR and four-ball tests, assessed friction and wear. Corrosion was examined using immersion tests, while scanning electron microscopy (SEM) analyzed surface morphology, providing comprehensive insights into filter performance. Findings The modified engine oil filter significantly improved engine oil performance. Viscosity increased by 6.2%, TAN decreased by 13.4% and TBN retention improved by 11.87%. Tribological testing revealed a 13.2% reduction in the coefficient of friction (COF) and a 32.4% decrease in wear scar diameter (WSD). Corrosion rate analysis showed a 23.07% improvement in corrosion resistance with the modified filter. SEM confirmed reduced corrosion pit formation, demonstrating that the modified filter effectively enhanced wear resistance, oil quality and engine component longevity. Research limitations/implications The scope of the study was confined to specific tribological and corrosion tests, and more comprehensive lifecycle analyses are needed. Future research could explore the scalability and economic feasibility of the modified filter, as well as its impact on various engine configurations and biodiesel blends. Practical implications By enhancing oil performance and reducing wear and corrosion, it could lead to lower maintenance costs and extended engine life. The use of this filter can benefit industries that rely on biodiesel, including transportation and agriculture, by improving fuel sustainability and reducing engine-related issues. Originality/value This study presents a novel modification to engine oil filters by incorporating a weak base inhibitor to improve biodiesel-driven engine performance. Unlike conventional filters, the modified design reduces corrosion, wear and oil degradation while enhancing filter lifespan. The findings highlight the significant impact of this innovation on the sustainability and efficiency of biodiesel use in internal combustion engines. This research provides valuable insights into optimizing biodiesel engine performance and supporting the transition to renewable energy sources. Peer review The peer review history for this article is available at: Link to website of Web Science