Saputra, Y. M. D. E., Sudarmanta, B. . and Paloboran, M. . (2025) “Influence Of The Compression Ratio And Ignition Timing On CB150R Engine Performance With 85% Bioethanol gasoline Blended Fuel”, IPTEK The Journal of Engineering, 3(3), pp. 25–29. doi: 10.12962/joe.v3i3.3207.