List of Articles spark ignition engine Open Access Article Abstract Page Full-Text 1 - Providing a thermodynamic model to simulate the spark ignition engine fueled with natural gas and ethanol mixture حسن زمانی Open Access Article Abstract Page Full-Text 2 - Dynamic optimization of load step transient response of a turbocharged spark ignition engine focusing on valves timing Mehdi Keshavarz Ahmad Keshavarzi 20.1001.1.27834441.2021.13.4.5.4