Experimental Study The Effect of Octane Number on Performance of The Spark Ignition Engine. Tikrit Journal of Engineering Sciences, [S. l.], v. 13, n. 2, p. 15–29, 2006. DOI: 10.25130/tjes.13.2.07. Disponível em: https://tj-es.com/ojs/index.php/tjes/article/view/723.. Acesso em: 9 sep. 2026.