The Effect of Methanol-Blended Fuel on Fuel Consumption and Exhaust Emissions of a 150 cc Gasoline Motorcycle

Authors

  • Mochammad Miftachul Syanusi Universitas Negeri Semarang Author
  • Hadromi Universitas Negeri Semarang Author
  • Rizqi Fitri Naryanto Universitas Negeri Semarang Author
  • Ranu Iskandar Universitas Negeri Semarang Author

DOI:

https://doi.org/10.15294/jmel.v14.i2.28103

Keywords:

Exhaust Emissions, Fuel Consumption, Gasoline Engine, Methanol-Blended Fuel, Motorcycle

Abstract

This study aims to determine the effect of methanol-blended fuel variations on fuel consumption and exhaust emissions Honda Supra X125 FI. The background of this research is the need for environmentally friendly and efficient alternative fuels to reduce air pollution from motorized vehicles. Methanol was chosen as an additive due to its high octane number and oxygen content in its structure, which can improve combustion efficiency. The tests were conducted using a Honda Supra X125 FI motorcycle with five fuel mixture variations: 0%, 5%, 10%, 15%, and 20% methanol in Shell V-Power. Data were collected using a gas aalyzer and a dynamometer to measure fuel consumption and CO and HC emission levels. The results show that methanol addition increases fuel consumption by up to 17.99% in the 20% methanol mixture due to methanol's lower calorific value compared to gasoline. However, CO emissions decreased by 23% and HC emissions by 19.26%. The 10% methanol mixture is optimal as it balances combustion efficiency and fuel consumption. The findings indicate that methanol has potential as a fuel additive for reducing emissions in gasoline motorcycles, although higher methanol concentrations may increase fuel consumption.

References

AISI. (2024). Statistik Penjualan Sepeda Motor Domestik. https://www.aisi.or.id/statistic/

Fahrizal, M. A., & Adiwibowo, P. H. (2020). Analisis Pengaruh Campuran Bahan Bakar Metanol Dengan Pertalite Terhadap Unjuk Kerja Mesin Sepeda Motor Yamaha Nmax Tahun 2020. Jurnal Teknik Mesin Unnesa, 12(03), 69–76.

Fatra, F., Mahendra, S., & Setiawan, I. (2020). Analisis re-mapping ECU terhadap performa mesin sepeda motor injeksi 4 tak 150cc The effect of standard ECU re-mapping variations using pertamax fuel on the performance of a 150cc 4 stroke injection motorcycle. Jurnal Taman Vokasi, 11(1), 41–49. http://dx.doi.org/10.30738/jtv.v11i1.14499

Halim, R. G., Riza, A., & Darmawan, S. (2022). Pengaruh Nilai Oktan Terhadap Unjuk Kerja Mesin Dan Kajian Analisis Pembakaran Akibat Delay Combustion Pada Mesin Otto Satu Silinder. Jurnal Cahaya Mandalika, 223–230.

Iliev, S. (2021). A comparison of ethanol, methanol, and butanol blending with gasoline and its effect on engine performance and emissions using engine simulation. Processes, 9(8). https://doi.org/10.3390/pr9081322

Iskandar, R., Arlinwibowo, J., Setiadi, R., Mujaki, A., Naryanto, R. F., Setiyawan, A., & Musyono, A. D. N. I. (2024). Impact of biodiesel blends on specific fuel consumption: A meta-analysis. IOP Conference Series: Earth and Environmental Science, 1381. Retrieved from https://iopscience.iop.org/article/10.1088/1755-1315/1381/1/012033/meta

Iskandar, R., Sukoco, Sutiman, Arifin, Z., Adkha, N. F., & Rohman, J. N. (2020). The quality of vehicle exhaust gas emission in Sleman, Indonesia in 2019. Journal of Physics: Conference Series, 1456(1), 012030. Retrieved from https://iopscience.iop.org/article/10.1088/1742-6596/1456/1/012030/meta

Li, X., Zhen, X., Wang, Y., Liu, D., & Tian, Z. (2019). The knock study of high compression ratio SI engine fueled with methanol in combination with different EGR rates. Fuel, 257(July), 116098. https://doi.org/10.1016/j.fuel.2019.116098

Martin, A., & O’Malley, J. (2021). Kompatibilitas pencampuran bahan bakar A20 pada mesin berbahan bakar bensin di Indonesia.

Maulana, S., Syahid, D. N., Widjanarko, D., & Setiyawan, A. (2023). Pengaruh Pemanasan Awal (Pre-Heater) Bahan Bakar Terhadap Performa Mesin Diesel Dengan Pemanas Kontrol Otomatis Di Laboratorium Pengujian Performa Mesin Jurusan Teknik Mesin FT UNNES. Journal Of Mechanical Engineering Learning, 12(1), 1–10.

Nidhi, & Subramanian, K. A. (2019). Experimental investigation on effects of oxygen enriched air on performance, combustion and emission characteristics of a methanol fuelled spark ignition engine. Applied Thermal Engineering, 147, 501–508. https://doi.org/10.1016/j.applthermaleng.2018.10.066

Nnamdi, A., & Prince, E. (2024). Catalyst System and Oxygen Sensor Performance in Automobile Exhaust Emissions on Injection Engine. November. https://doi.org/10.56201/ijemt.v10.no9.2024.pg19.29

ÖRS, İ., GÜLCAN, H. E., KUL, B. S., YELBEY, S., & CİNİVİZ, M. (2022). Evaluation of the Effects of Methanol and Ethanol Additions on Performance and Emissions in a Spark Plug Ignition Engine Fueled with Gasoline. International Journal of Automotive Science and Technology, 6(2), 156–164. https://doi.org/10.30939/ijastech..1081731

Pramudito, Y., Maymuchar, M., Wibowo, C. S., Anggarani, R., Warahadi, D., Fathurrahman, N. A., & Aisyah, L. (2022). Kinerja Mesin Spark Ignition (SI) Berbahan Bakar Campuran Bensin-Metanol (M-20) Dan Bensin-Etanol (E-20) Pada Variasi Nilai Oktan. Lembaran publikasi minyak dan gas bumi, 56(2), 89–98. https://doi.org/10.29017/lpmgb.56.2.1173

Rahmawati, S., & Pratama, I. N. (2023). Pengaruh Penggunaan Transportasi BerkelanjutanTerhadap Kualitas Udara Dan KesejahteraanMasyarakat. Journal of Enviromental Policy and Technology, 1(2), 90–99.

Riyanto, L., Suwignyo, J., & Mahendra, S. (2022). Pengaruh Variasi Injector Dengan Bahan Bakar Terhadap Performa Mesin Dan Emisi Gas Buang Yamaha Soul Gt 2014. Journal of Vocational Education and Automotive Technology, 4(2), 77. https://doi.org/10.31331/joveat.v4i2.2403

Royyan, M. A. D., Margianto, & Raharjo, A. (2025). Pengaruh penambahan metanol pada gasoline ron 95 terhadap emisi gas buang motor bakar 4-langkah. Undergraduate Thesis. https://repository.unisma.ac.id/handle/123456789/11556?show=full

Sahaja, K., & Pudukarapu, L. (2019). Effect Of The Use Of Methanol, Toluene And Nitromethane Mixtures As Fuel Additives In A Gasoline Engine On Engine Performance And Exhaust Emissions. 6(6), 1–4.

Sanjaya, F. L., & Syarifudin, S. (2020). Konsumsi Bahan Bakar Dan Emisi Gas Buang Mesin Motor 100 cc Berbahan Bakar Premium Dan Metanol. Nozzle : Journal Mechanical Engineering, 9(2), 38–40. https://doi.org/10.30591/nozzle.v9i2.2261

Sarikoç, S. (2020). Impact of various lambda values on engine performance, combustion and emissions of a SI engine fueled with methanol-gasoline blends at full engine load. International Journal of Automotive Engineering and Technologies, 9(4), 178–189. https://doi.org/10.18245/ijaet.735553

Sarıkoç, S. (2023). Environmental and enviro-economic effect analysis of hydrogen-methanol-gasoline addition into an SI engine. Fuel, 344(March), 128124. https://doi.org/10.1016/j.fuel.2023.128124

Setiyawan, A., Fitriyana, D. F., Bahatmaka, A., Firmansyah, H. N., Darsono, F. B., Aryadi, W., Kriswanto, Roziqin, A., & Naryanto, R. F. (2023). Diesel Engine Performance using Pertamina Dex and Biodiesel (B30) on RPM and Fuel Consumption. IOP Conference Series: Earth and Environmental Science, 1203(1). https://doi.org/10.1088/1755-1315/1203/1/012010

Sinkala, H., Özarslan, S., & Benarous, A. (2024). Effect of Excess Air Ratio on Emissions, Performance and Efficiency of Gasoline Fueled Engines: A Review. Energy, Environment & Storage, 4(2), 32–45. https://doi.org/10.52924/pupx2065

Tira, H. S., Mirmanto, Iwanuddin, Salman, & Sudirman. (2023). Analysis of the Calorific Value and Specific Gravity of Breadfruit Peel Bioalcohol (Artocarpus Altilis) as an Alternative Fuel at Various Distillation Temperatures. Jurnal Penelitian Pendidikan IPA, 9(7), 5163–5169. https://doi.org/10.29303/jppipa.v9i7.2878

Wahyudi, K., Makai, K., & Sukmono, Y. (2024). Implementasi Stasiun Pengisian Kendaraan Listrik Umum (SPKLU) Sebagai Infrastruktur Penunjang Electrical Vehicle dalam Mendukung Net Zero Emission. 2(2), 38–46.

Wirawan, T. S., Putra, A. E. E., & Aziz, N. (2021). Gasoline Engine Performance, Emissions, Vibration and Noise with Methanol-Gasoline Fuel Blends. IOP Conference Series: Earth and Environmental Science, 927(1). https://doi.org/10.1088/1755-1315/927/1/012027

Zaini, A. K., & Ariska, I. (2022). Motorcycle Behavior and Traffic Safety (Case of Ujung Batu District, Rokan Hulu Regency) Riau Province. Asian Journal of Mechatronics and Electrical Engineering, 1(1), 13–24.

Zhang, Z., Wen, M., Cui, Y., Ming, Z., Wang, T., Zhang, C., Ampah, J. D., Jin, C., Huang, H., & Liu, H. (2022). Effects of Methanol Application on Carbon Emissions and Pollutant Emissions Using a Passenger Vehicle. Processes, 10(3), 10.3390/pr10030525

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Published

2025-12-31

Article ID

28103

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Articles

How to Cite

The Effect of Methanol-Blended Fuel on Fuel Consumption and Exhaust Emissions of a 150 cc Gasoline Motorcycle. (2025). JMEL : Journal of Mechanical Engineering Learning, 14(2), 63-70. https://doi.org/10.15294/jmel.v14.i2.28103