Inherent Fuel Consumption and Exhaust Emission of the CNG–Petrol Bi–Fuel Engine Based at Non–Loaded Operation. Jurnal Teknologi (Sciences & Engineering), [S. l.], v. 48, n. 1, p. 1–18, 2012. DOI: 10.11113/jt.v48.216. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/216.. Acesso em: 11 dec. 2025.