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All Journal International Journal of Renewable Energy Development Jurnal Teknik Mesin Rekayasa Mesin Sinergi Indonesian Journal of Science and Technology Jurnal Elemen Community Empowerment Mechanical Engineering for Society and Industry Automotive Experiences Urecol Journal. Part D: Applied Sciences International Journal of Renewable Energy Development
Muhammad Latifur Rochman
Universitas Muhammadiyah Magelang
Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation

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Development and Implementation of LPG/Gasoline Bi-Fuel Engine Teaching Media for Vocational High Schools Muji Setiyo; Saifudin Saifudin; Agus Setiawan; Muhammad Latifur Rochman; Sofyan Kurniawan; Dhasa Ikrar Setyanansyach
Community Empowerment Vol 8 No 11 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.10181

Abstract

In 2022, the World Liquified Petroleum Gas Association (WLPGA) reported that there are more than 28.3 million LPG-fueled vehicles used throughout the world with an increasing trend in the last 20 years. The growth of LPG-fueled vehicles will require more mechanics from vocational school graduates who master environmentally friendly technology. Considering the availability of resources, Muhammadiyah Vocational High School 1 Bandongan Magelang (SMK MUTU Bandongan) has the potential to complement the competencies of graduates with mastery and skills in servicing modern and environmentally friendly vehicles, as one of their uniqueness from others. Therefore, we develop and implement environmentally friendly automotive technology learning media, especially LPG-fueled vehicles at SMK MUTU Bandongan. This is an implementation of research on LPG-fueled vehicles over the last 10 years. Activities are carried out through (1) rebuilding and reconditioning the engine which will be modified into a bi-fuel engine; (2) procurement and installation of converter kits; and (3) increasing teacher competency.
Optimizing energy harvesting from waste motor oil through steam reforming: A path to efficient combustion and emissions reduction Budi Waluyo; Bambang Pujiarto; Nofa Ardana; An’nisa Solihah; Muhammad Latifur Rochman; Ahmad Tresno Adi
Mechanical Engineering for Society and Industry Vol 3 No 2 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.10362

Abstract

Waste Motor Oil (WMO) is a hazardous waste material with the potential to contaminate water, soil, and the atmosphere. The management and engineering of WMO have become imperative in modern society for both resource utilization and environmental protection. Maximizing the energy content of WMO poses a significant challenge for researchers, to solve environmentally friendly solutions. Direct combustion of WMO often results in incomplete combustion and elevated CO emissions. Therefore, this research aims to optimize the harnessing of WMO's energy potential through a furnace equipped with steam injection. The steam is generated by utilizing the heat energy produced during the WMO heating process. Our study demonstrates that steam injection in the WMO furnace is an effective method for maximizing energy content while simultaneously reducing CO emissions.
The role of mechanical engineering in the era of industry 4.0 and society 5.0 Muji Setiyo; Muhammad Latifur Rochman
Mechanical Engineering for Society and Industry Vol 3 No 2 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.10786

Abstract

The article delves into the contrasting impacts and roles of Industry 4.0 and Society 5.0 in technological and societal advancement. While Industry 4.0 promises enhanced efficiency and income but raises concerns about automation-driven inequality, mechanical engineering has evolved from traditional to digital realms. Society 5.0, emerging as a response to societal issues, envisions a human-centric society bridging physical and virtual worlds, emphasizing technology for inclusive and sustainable progress. This transformative shift amalgamates human intellect and technology, advocating preparedness and lifelong learning amidst the ongoing industrial revolution. Mechanical engineering's pivotal role spans both paradigms, optimizing Industry 4.0's manufacturing systems and spearheading sustainable solutions and user-centric technologies in Society 5.0, emphasizing a holistic approach to societal and industrial challenges.
Literature review: An effective method for identifying science and technology updates Muji Setiyo; Muhammad Latifur Rochman
Mechanical Engineering for Society and Industry Vol 3 No 3 (2023): Special Issue on Technology Update 2023
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.10787

Abstract

Literature reviews have been proven to help researchers and scholars identify research gaps and identify potential new research paths. This shows an exponential increase in literature review articles from 2000 to the present. Therefore, this article introduces a special issue in MESI (Volume 3, Issue 3, 2023) dedicated to a literature review, highlighting five articles covering topics as diverse as plastic waste in road materials, porous hydroxyapatite for bone grafts, magnesium biocomposites, bio-based cutting fluids for manufacturing, contact mechanics perspective for medical therapy, and the concept, technology, and application of a swirl-type microbubble generator. These articles offer important insights into their respective fields, highlighting advances, challenges, and future research directions.
Study on Solar Powered Electric Vehicle with Thermal Management Systems on the Electrical Device Performance Herlambang, Yusuf Dewantoro; Sulistiyo, Wahyu; Margana, Margana; Apriandi, Nanang; Nursaputro, Septiantar Tebe; Marliyati, Marliyati; Setiyo, Muji; Purwanto, Wawan; Rochman, Muhammad Latifur; Shyu, Jin Cherng
Automotive Experiences Vol 7 No 1 (2024)
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.10506

Abstract

This study aims to determine the reliability of applying a thermal management system in conjunction with Internet of Things in solar electric cars. In conventional electric cars or those whose driving energy source comes from gasoline fuel; the applied thermal management system is mainly used as a coolant for the internal combustion engine. However, for electric cars the thermal management system may be used for the main components such as controllers that convert solar module energy into electricity and batteries. Results from tests utilizing six DC fans for air cooling of the thermal management system yield two variations of battery charging conditions from the solar modules, namely variations of 25 and 400 turns of the trimmer constant current step-up charger. Test results from the proposed thermal management system show that the highest step-up charger temperature is 35.75 °C with voltage of 57.64 V for the variation of 25 laps. The test results on the battery voltage and temperature show that the highest battery temperature reaches 31.75 °C with voltage of 57.3 V at the variation of 25 rounds.
Preparation and mechanical characterization of natural polymer composite material obtained from fox tail palm seeds Kolakoti, Aditya; Geeri, Satish; Rochman, Muhammad Latifur; Setiyo, Muji
SINERGI Vol 28, No 3 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.3.007

Abstract

This experimental investigation reveals the preparation of natural composite material from foxtail palm tree seeds. The fruits from the foxtail palm tree are used for the extraction of oil, and the by-product of the extraction process is freely dumped. This study attempts to utilize the waste by-product of foxtail palm tree fruit as a valuable natural composite material. The fabrication was done using the hand lay-up method for the proposed reinforcement (4% and 8%) of filler materials. The obtained composite materials are subjected to significant mechanical characterization of tensile behaviour, flexural property, and hardness. In addition, the morphological study was also carried out by the scanning electron microscope (SEM). The results show that, as the reinforcement percentages of filler material increase, the mechanical properties are improved. This may be due to the uniform dispersion of natural fibres in the polymer. The tensile strength was improved by 22.43% and 29.08% for 4% and 8% filler reinforcement. Similarly, the stiffness property was improved by 9.32% for 4% reinforcement and 18.68% for 8% reinforcement when compared with neat composite. The SEM images reveal the failure analysis, bonding strength and fibre pull-out in the composites. Finally, the foxtail fruit fibre shows promise as a reinforcing agent in composite materials, improving their mechanical properties and making them suitable for various applications requiring strength, stiffness, and resistance to deformation.
Exploration of Engine Parameters for Emission Reduction in Gasoline-Ethanol Fueled Engines Purwanto, Wawan; Maksum, Hasan; Arif, Ahmad; Rochman, Muhammad Latifur; Sujito, Sujito; Padrigalan, Kathleen Ebora
Automotive Experiences Vol 7 No 3 (2024)
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.12467

Abstract

The main objective of this study is to develop spark ignition engine parameters that allow complete combustion while reducing dependence on fossil fuels. To achieve this goal, optimization of compression ratio, gasoline-ethanol mixture, ignition timing, and spark plug type was used. In addition, this study used water injection that continuously injects water before the intake manifold. In this study, the Taguchi method with the L9 orthogonal array was applied. According to the experimental verification results, the best combination to reduce exhaust emission levels is to utilize gasoline-ethanol (E70), a compression ratio (CR) of 15.6:1, an ignition degree of +4°, and a platinum spark plug. Meanwhile, the presence of water injection at 1.45 ml/s helps reduce vehicle exhaust pollutants.
Pyrolysis for plastic waste: Environmental goals vs business interests, which is more realistic? Setiyo, Muji; Sunaryo, Sunaryo; Rochman, Muhammad Latifur
Mechanical Engineering for Society and Industry Vol 5 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.14149

Abstract

Global plastic production exceeds 390 million tons annually, yet only about 9% is recycled, leaving severe environmental impacts. Pyrolysis is emerging as a promising solution, converting plastic waste into fuels and chemicals. However, popular claims on mass media and commercial technology publications, that 1 kg of plastic yields 1 liter of fuel are misleading, as they ignore differences in mass, volume, and fuel density. Pyrolysis oil can indeed serve as fuel but often needs further refining to meet engine standards. Economically, it holds potential, with oil prices ranging from USD 600–900 per ton and syngas generating up to 800 kWh per ton. Nonetheless, high capital and operational costs challenge its feasibility, particularly for small-scale operations. Environmentally, pyrolysis aligns with sustainability and circular economy goals, potentially reducing emissions by up to 3.5 tons of CO₂-equivalent per ton of plastic processed. This paper examines pyrolysis critically, addressing misconceptions and evaluating its realistic prospects as both an environmental solution and a business venture.
Co-Authors Aditya Kolakoti Aditya Kolakoti Agung Setyo Pambudi Agus Setiawan Ahmad Arif Ahmad Arif Ahmad Irfan Ahmad Tresno Adi Ambati Vijay Kumar Aminuyati An’nisa Solihah Baginda Pangidoan Tanjung Bagiyo Condro Purnomo Bambang Pujiarto Budi Waluyo Damar Setyo Prakasa Darmawan Rois Dhasa Ikrar Setyanansyach Dwi Restianto Geeri, Satish Hasan Maksum Jerry Chih Tsong Su Khoirul Fa’i Kolakoti, Aditya Krismadinata Krismadinata Lalank Samudra Mukti Hidayat Lilik Budiyarto Marliyati Marliyati, Marliyati Muhammad Iqbal Al-Fikri Muhammad Mauludin Kharim Muji Setiyo Nanang Apriandi Nofa Ardana Noto Widodo Nursaputro, Septiantar Tebe Padrigalan, Kathleen Ebora Prasasti Bayu Aji Pramono Prima Nofan Ryastama Purwanto, Wawan Raghu Metta Refaldy Pristiwantoro Riyan Adhy Pratama Riyan Tri Aditya Pamungkas Saifudin Setyo Widiantoro Shyu, Jin Cherng Sofyan Kurniawan Sujito Sujito Sunaryo Sunaryo Suroto Munahar Wahyu Danu Romadlon Wahyu Sulistiyo Widha Bagus Fahriansyah Yusuf Dewantoro Herlambang