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All Journal Jurnal Dinamis Rekayasa Mesin Journal of Mechanical Engineering Science and Technology Jurnal Voering CARADDE: Jurnal Pengabdian Kepada Masyarakat Jurnal Dinamis Community Empowerment Jurnal Ilmiah Wahana Pendidikan Jurnal Pengabdian Masyarakat untuk Negeri (UN-PENMAS) Automotive Experiences Abdimas Dinamis
Helen Riupassa
Department Of Mechanical Engineering, Jayapura University Of Science And Technology, Jayapura, 99351, Indonesia
Religion Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Journal : Automotive Experiences

 1 
An Experimental Study on the Ignition Behavior of Blended Fuels Droplets with Crude Coconut Oil and Liquid Metal Catalyst Hendry Y. Nanlohy; Helen Riupassa; I Made Rasta; Masaki Yamaguchi
Automotive Experiences Vol 3 No 2 (2020)
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 | Full PDF (946.843 KB) | DOI: 10.31603/ae.v3i2.3481

Abstract

This study examines the Ignition characteristics of blended fuel droplets with crude coconut oil and rhodium liquid as a liquid metal catalyst. The ignition behavior was observed by igniting the oil droplet on a junction of a thermocouple, and the droplet evolution recorded with the high-speed camera. The results show that the addition of a liquid metal catalyst successfully reduces the molecular mass of the triglyceride and weakens the bonding force between the carbon chain, and therefore the viscosity and flash point decreases. Moreover, the addition of liquid metal catalysts increased the reactivity of fuel molecules such as C-H, C-C, C = C, and C-O. Changes in the physical properties of the fuel, the geometry of the carbon chain, and molecular mass ease the absorption of heat by the fuel droplet, thereby increasing fuel ignition performances.
Performance and Emissions Analysis of BE85-Gasoline Blends on Spark Ignition Engine Hendry Y. Nanlohy; Helen Riupassa; Marthina Mini; Herman Tjolleng Taba; Basri Katjo; Nevada JM Nanulaitta; Masaki Yamaguchi
Automotive Experiences Vol 5 No 1 (2022)
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 | Full PDF (771.632 KB) | DOI: 10.31603/ae.6116

Abstract

This study aims to reveal the performance and exhaust emissions of a spark ignition (SI) engine fueled by a gasoline-bioethanol mixture. The main performance characteristics of the SI engine tested are torque, power output; thermal efficiency, brake specific fuel consumption, and brake mean effective pressure. Meanwhile, the exhaust emissions seen are carbon monoxide and hydrocarbons. The test is carried out by comparing the performance of the SI engine under standard conditions without modification with gasoline fuel, with the SI engine with modification with 85% bioethanol fuel. The mass flow of fuel is regulated by modifying the carburetor choke at 3/4 and 7/8. The results show that although slightly lower than gasoline, in general, it can be seen that bioethanol can improve SI engine performance and produce environmentally friendly exhaust emissions.
Effects of Eugenol and Cineol Compound on Diffusion Burning Rate Characteristics of Crude Coconut Oil Droplet Helen Riupassa; Suyatno Suyatno; Hendry Y. Nanlohy; Andi Sanata; Trismawati Trismawati; Rachmat Subagyo; Satworo Adiwidodo; Muhammad Akhlis Rizza; Masaki Yamaguchi; Takuya Tomidokoro; Selcuk Sarikoc
Automotive Experiences Vol 6 No 1 (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.8150

Abstract

The burning rate of coconut oil droplets has been investigated experimentally by adding bio-additives of clove oil and eucalyptus oil. Tests were carried out with single droplets suspended on thermocouples at room atmospheric pressure, and room temperature and ignited with a hot wire. The addition of clove oil and eucalyptus oil as bio-additives into coconut oil was 100 ppm and 300 ppm, respectively. The droplet combustion method was chosen to increase the contact area between the air and fuel so that the reactivity of the fuel molecules increases. The results showed that the eugenol compounds contained in clove oil and cineol compounds in eucalyptus oil were both aromatic, and had an unsymmetrical carbon chain geometry structure. Furthermore, this factor can potentially accelerate the occurrence of effective collisions between fuel molecules. Therefore the fuel is combustible, as evidenced by the increased burning rate, where the results show that without bio-additives, the burning rate of crude coconut oil (CCO) is about 0.7 seconds. These results are 0.15 to 0.2 seconds slower than CCO with bio-additive, which is around 0.55 to 0.6 seconds. Moreover, from the observations, it was found that the highest burning rate was achieved in both bio-additives with a concentration of 300 ppm.
Co-Authors Alfons, Alfred Benjamin Andi Sanata Bambang Suhartawan Basri Katjo Bonefasius Bao Bosta Sihombing Haurissa, Jusuf Hendry Y. Nanlohy Herman Hi. Tjolleng Taba Herman Tjolleng Taba Hotnida Nainggolan I Made Rasta Ikhwansyah Isranuri Iriyanto, Santje Magdalena Jusuf Haurissa Kenny H Marthina Mini Marthina Mini Marthina Mini Martina Mini Masaki Yamaguchi Masaki Yamaguchi Mebin Samuel Panithasan Muhammad Akhlis Rizza Nevada M.J. Nanulaitta Rachmat Subagyo Ribut Jayanto Rolling Gasperzs Satworo Adiwidodo Selcuk Sarikoc Susi Marianingsih Suyatno Suyatno Syamsudin Usman Syamsudin Usman T. Ahri Bahriun Takuya Tomidokoro THOMAS KBAREK Thomas Kbarek Trismawati Trismawati Trismawati Trismawati Tugiman Tugiman Yamaguchi, Masaki