Performance and Exhaust Emissions of Four Stroke Gasoline Engine Variations of Injection Duration Mapping with Ethanol Fuel E75. EJIITEK [Internet]. 2025 May 30 [cited 2025 Aug. 11];15(1):109-20. Available from: https://e-journal.upm.ac.id/index.php/energy/article/view/energy.v15i1.15110