Thorough examination of CI engine performance metrics and emission patterns with incorporation of sustainable waste cooking oil biodiesel blends across diverse nozzle pressure regimens: A numerical study: EFFECT OF NOZEL PRESSURE VARIATION ON CI ENGINES RUNNING ON WCO BIODIESEL A NUMERICAL STUDY. IJEMS. 2025;31(5):728-741. doi:10.56042/ijems.v31i5.11105