Osama H. Ghazal and Yousef S. Najjar and Kutaeba J. AL-Khishali , Effect of Inlet Valve Variable Timing in the Spark Ignition Engine on Achieving Greener Transport. journal = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology. October 2011, vol. 59(11). 2536 - 2540 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/17401.