Allawi, M. K.; Mejbel, M. K.; Oudah, M. H. Variable Valve Timing (VVT) Modelling by Lotus Engine Simulation Software. Int. J. Automot. Mech. Eng. 2021, 17 (4), 8397 – 8410. https://doi.org/10.15282/ijame.17.4.2020.15.0635.