SINAGA, C.; PURWANTO, W.; SETIAWAN, M. Y.; ARIF, A. Comparative Exhaust-Gas Characteristics of Sugarcane Bagasse and Pineapple Waste Bioethanol Blends in a Fuel-Injected Motorcycle under a Common HHO-System Configuration. MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering, v. 8, n. 2, p. 143-158, 27 jul. 2026.