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All Journal JHP17 (Jurnal Hasil Penelitian) R.E.M (Rekyasa Energi Manufaktur) Jurnal JRST (Jurnal Riset Sains dan Teknologi) MEKANIKA - JURNAL TEKNIK MESIN Prosiding Seminar Nasional Sains dan Teknologi Terapan Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Jurnal Teknik Mesin Infotekmesin Society : Jurnal Pengabdian dan Pemberdayaan Masyarakat Jurnal Pustaka Mitra : Pusat Akses Kajian Mengabdi Terhadap Masyarakat Journal of Mechanical Engineering, Science, and Innovation The Journal of System Engineering and Technological Innovation Jurnal Pengabdian Masyarakat dan Inovasi Teknologi Journal of Science and Social Development Prosiding Seminar Nasional Unimus
Gatot Setyono
Universitas Wijaya Putra
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry 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 Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Transportation Other

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Multi-Response Optimization of Spark-Ignition Engine Performance Using Methanol–Butanol Ethanol Fuel Blends through Response Surface Methodology Dwi Khusna Khusna; Gatot Setyono; Navik Kholili; Alfi Nugroho
Infotekmesin Vol 17 No 2 (2026): Infotekmesin: Juli 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/

Abstract

Improving combustion efficiency while reducing fuel consumption remains a major challenge in the development of spark-ignition (SI) engines. Oxygenated alcohol fuels have attracted considerable attention because of their potential to improve combustion quality and energy conversion efficiency. However, previous studies have mainly focused on single or binary alcohol blends, whereas comprehensive optimization of ternary methanol–butanol–ethanol (MBE) blends under different engine operating conditions remains limited. This study investigated the combined effects of MBE blend ratio (9–17 vol.%), engine speed (4000–9000 rpm), and ignition timing (15–25°CA) on SI engine performance using Response Surface Methodology based on a Face-Centered Central Composite Design (FCCD). Power, specific fuel consumption (SFC), and thermal efficiency (TE) were selected as response variables, and twenty experimental runs were conducted to develop quadratic prediction models and determine the optimum operating condition through desirability-based multi-response optimization. The developed models exhibited excellent predictive capability, with coefficients of determination (R²) exceeding 0.99 and statistically insignificant lack-of-fit values. Engine speed was identified as the most influential factor affecting all responses. The optimum operating condition was obtained at 16.21 vol.% MBE, 7015.42 rpm, and 24.31°CA, producing 6.32 kW power, 0.499 kg/kW·h SFC, 22.44% thermal efficiency, and an overall desirability of 0.973. These findings suggest that FCCD-based multi-response optimization is an effective approach for improving SI engine performance using ternary MBE fuel blends.
Enhancing the Management and Recycling Capacity of Styrofoam Waste Through a Green Economy Approach Setyono, Gatot; Rodhiyah, Rodhiyah; Ulum, Miftahul; Haryadi Ogsa, Muhammad Al Khawarizmi; Aditya, Bagas
Jurnal Pustaka Mitra (Pusat Akses Kajian Mengabdi Terhadap Masyarakat) Vol 5 No 5 (2025): Jurnal Pustaka Mitra (Pusat Akses Kajian Mengabdi Terhadap Masyarakat)
Publisher : Pustaka Galeri Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55382/jurnalpustakamitra.v5i5.1291

Abstract

Styrofoam waste poses a serious environmental challenge due to its non-biodegradable nature and the lack of sustainable disposal solutions. Conventional methods such as landfilling and incineration often lead to secondary problems, including soil contamination and harmful emissions. This community partnership program was conducted at UD Tiga Putra, a micro-enterprise in Gresik, Indonesia, which previously relied on a 150 kg/day Styrofoam melting machine prone to frequent breakdowns and inconsistent product quality. To address these issues, an appropriate-technology Styrofoam melting machine with a capacity of 300 kg/day was introduced, effectively doubling production capacity (from 150 to 300 kg/day) and improving product uniformity. In addition, structured occupational health and safety (OHS) training was provided to 12 employees, covering fire extinguisher (APAR) usage, personal protective equipment, and workplace safety practices. Financial mentoring was also delivered, emphasizing systematic bookkeeping, separation of personal and business finances, and preparation of transparent reports. Evaluation using pre- and post-training assessments and direct observation showed significant improvements: OHS awareness scores increased by 20%, financial documentation accuracy improved, and operational disruptions decreased. Overall, the integration of technological innovation, safety training, and financial management mentoring not only strengthened the resilience and sustainability of UD Tiga Putra but also offers a replicable model for empowering other micro-enterprises in line with circular economy principles.
Co-Authors Aditya, Bagas Afira Ainur Rosidah Ahmad Anas Arifin Ahmad Yusuf I ALFI NUGROHO Ali Djamhuri Ali Khomsah Ardi Noerpamoengkas Argil Putra, Fajar Galang Ariyansyah, Moch. Rhizky Bambang Setyono, Bambang Boki, Meki Alfonsus Ferdinan Deny Surya Pratama Deny Surya Pratama Desmas Arifianto P Desmas Arifianto Patriawan Dewananta, Alvin Rivada Diantoro, Nova Arizal Dwi Khusna Dwi Khusna Dwi Khusna Khusna Eky Novianarenti Fajar Galang Argil Putra Fantoja, Dimas Maulana Frizka Vietanti Galih Ageng Kurniawan Galih Ageng Kurniawan Haryadi Ogsa, Muhammad Al Khawarizmi Hasan Syafik M Hau, Fikarahman Putra HERU SISWANTO Hery Irawan, Hery Iftika Philo Wardani Kholili, Navik Kurniawan, Galih Ageng Kusumo, Sri Herlambang Haryo Lingga Putra Sanjaya Maulana, Hasan Syafik Miftahul Ulum Miftahul Ulum Miftahul Ulum Moch. Rhizky Ariyansyah Mochammad Muchid, Mochammad Muharom Muharom Muharom Navik Kholili Nugroho, Alfi Nugroho, Andianto Wahyu Ong Andre Wahyu Riyanto, Ong Andre Wahyu Pratama, Deny Surya Pratama, Sigit Putra Sanjaya, Lingga Raharjo, Septian Rahmadhani, Rian Agung Rakhmadanu, Yanuariza Rodhiyah Rodhiyah Rodhiyah S. Riyadi Saputra, Firman Dirga Sigit Pratama Sigit Pratama Siswadi Siswadi Slamet Riyadi Suheni Susastro Susastro Syamsuri Vuri Ayu S Vuri Ayu Setyowati Wahyu Nugroho Yanuariza Rakhmadanu Zain Lillahulhaq