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All Journal Automotive Experiences Makara Journal of Technology
Anggarani, Riesta
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Kinetic Modeling Study of Laminar Burning Velocity of Gasoline–Ethanol–Methanol Blends at Elevated Temperature and Pressure Auzani, Ahmad Syihan; Wibowo, Cahyo Setyo; Anggarani, Riesta; Nugroho, Yulianto Sulistyo; Sugiarto, Bambang
Makara Journal of Technology Vol. 25, No. 2
Publisher : UI Scholars Hub

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Abstract

Gasoline–ethanol–methanol (GEM) blends have been considered to replace pure gasoline as spark ignition engine fuel. Their physical and chemical properties and performance and emission measurements from real engines have been reported previously. However, a fundamental study that can explain the unique results of GEM compared with those of pure gasoline is lacking. This study aims to compare the laminar burning velocity of GEM blends at different mixtures, equivalence ratios, temperatures, and pressures with that of pure gasoline. A laminar flame propagation model and reaction mechanisms from the literature were were for a numerical simulation. In this study, the chemical components of real gasoline are simplified using a binary surrogate mixture. Results show that the laminar burning velocity of the GEM increased with the increase in temperature, ethanol, and methanol concentration, and it decreased with the increase in pressure. Sensitive reactions to laminar burning velocity are presented through a sensitivity analysis.
Performance of a Single-Cylinder Four-Stroke Engine with High Concentrations of Gasoline-Ethanol-Methanol (GEM) Hanifuddin, M; Taufiqurrahman, Muhammad Faja; Setyawan, Tri Aji; Anggarani, Riesta; Wibowo, Cahyo Setyo; Sugiarto, Bambang
Automotive Experiences Vol 6 No 2 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.9332

Abstract

Several types of alternative fuels have been developed to replace fossil fuels. Alcohols, such as ethanol and methanol, can be blended with gasoline for spark ignition (SI) engines. High octane number and oxygen content in alcohol can increase combustion efficiency. Therefore, our current research investigates the effect of high concentrations of ethanol and methanol mixed in 90 RON gasoline. The mixture was implemented in a 150 cc single-cylinder four-stroke spark ignition (SI) engine without any modifications. Engine testing was carried out with wide-open throttle (WOT) and different engine speeds from 4000 to 10000 rpm. Torque, power, and Air Fuel Ratio (AFR) were measured during experiments on a chassis dynamometer. Our test results found that the higher the methanol fraction in the mixture, the lower the torque generated. To improve engine performance, further research is needed on modified engines so that optimal conditions can be identified.
Co-Authors Abdurrojak, Majid Abdurrojaq, Nurmajid Aisyah, Lies Akmal, Gian Anugrah, Risvita B. Auzani, Ahmad Syihan Bahtiar, Saepul Bambang Sugiarto Bethari, Sylvia Ayu Devitasari, Rossy D. Faturrahman, Nur A. Faturrahman, Nur Allif Ginanjar, Kemal H, Nanang Hanifuddin, M Hermawan, Nanang Hidayat, Wahyu N. Katili, Marsha Maymuchar, Maymuchar Mulyadi, Hadi Rulianto, Dimitri Setyawan, Tri Aji Sujarwati, Widi Sukaraharja, Reza Supriyadi, Faqih Taufiqurrahman, Muhammad Faja Wibowo, Cahyo S Wibowo, Cahyo S. Wibowo, Cahyo Setyo Yulianto Sulistyo Nugroho Yuliarita, Emy Zaelani, Rizal