LY, V. D.; LE , T. Q.; DO , T. T. . A study of the effects of swirl and tumble ratios on engine performance in motorbike. Journal of Technical Education Science, [S. l.], v. 14, n. 3, p. 58–65, 2019. Disponível em: https://www.jte.edu.vn/index.php/jte/article/view/223. Acesso em: 7 apr. 2026.