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All Journal Nuras : Jurnal Pengabdian Kepada Masyarakat Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan
Shohihatur Rohman
Program Studi Pendidikan Teknik Otomotif, Fakultas Teknik, Universitas Negeri Semarang, Jalan Kolonel H. R. Hadijanto, Semarang, Jawa Tengah 50229, Indonesia
Humanities Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Immunology & microbiology Mathematics Physics Social Sciences

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Penerapan Teknologi Forged Carbon Compression Split Moulding (FCCSM) untuk Mendukung Industri Hijau dan Zero Waste pada UKM Komponen Berbahan Karbon Fiber Ahmad Roziqin; Bayu Bagas Hapsoro; Shohihatur Rohman
Nuras : Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/nuras.v5i4.730

Abstract

The use of carbon fiber (carbon fiber reinforced plastic) in the automotive component industry produces significant waste, reaching 15-20% of the total raw materials. The community service partner, BPM Carbon Works Semarang, previously handled this waste by incineration, which caused environmental and economic problems. This community service program aims to address these problems through the application of Forged Carbon Compression Split Molding (FCCSM) technology. The methods used include lectures, demonstrations, hands-on practice, and assistance in designing two- and four-part split molds, as well as processing carbon fiber waste into commercially valuable products. The results of the activity show that the amount of partner waste is reduced from 20% to 5%, and partner understanding increases significantly with N-Gain scores of 0.73 and 0.75 (high category). In addition, partner profits increase by 15%. This program not only solves environmental problems, but also empowers the partner's economy, in line with the achievement of sustainable development goals (SDGs). Thus, it can be concluded that FCCSM technology is effective in achieving a zero-waste industry, and ongoing mentoring and collaboration with local governments are recommended.
Analisis Pengujian Kebisingan dan Emisi Gas Buang pada Sepeda Motor Honda 110 cc Menggunakan Knalpot AHLM (Adaptive High-Performance, Low-Pollution Muffler) Ni’mal Maula Putra; Ahmad Roziqin; Rizqi Fitri Naryanto; Angga Septiyanto; Sonika Maulana; Shohihatur Rohman
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v5i4.708

Abstract

The high levels of air pollution and noise from motor vehicles cause negative impacts on the environment and health. Innovation in exhaust systems is needed to address this issue. This study aims to analyze the effect of different exhaust types on noise levels and exhaust gas emissions in a Honda 110 cc motorcycle. The independent variable in this study is the type of exhaust (standard, free flow, and AHLM), while the dependent variables include noise level (dB) and emissions of carbon monoxide (CO) and hydrocarbons (HC). The control variables include measurement distance, engine operating temperature (80°C to 90°C), and fuel type (RON 90). The research method uses a quantitative experimental approach with a sound level meter to measure noise and a gas analyzer for exhaust emissions. Data analysis was performed using the Kruskal-Wallis test to determine differences among exhaust variations. The statistical test results showed no significant difference (p > 0.05) in noise levels and exhaust emissions among the three types of exhaust. However, descriptively, the AHLM muffler performed best, reducing noise by up to 5.88% compared to free flow, and decreasing CO emissions by 17% and HC by 1%. This study is limited to testing one type of motorcycle and laboratory conditions, so the results do not yet represent actual traffic conditions. Thus, the AHLM muffler has the potential to be an adaptive exhaust system innovation that is more environmentally friendly and effective in reducing noise and motor vehicle emissions.
Analisis Pengujian Konsumsi Bahan Bakar dan Performa pada Sepeda Motor Honda 110 cc Menggunakan Knalpot AHLM (Adaptive High-Performance, Low-Pollution Muffler) Fadhil Fayisa; Ahmad Roziqin; Rizqi Fitri Naryanto; Angga Septiyanto; Sonika Maulana; Shohihatur Rohman
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v5i4.709

Abstract

Motor vehicle emissions and energy efficiency are key concerns in developing environmentally friendly automotive technologies, particularly for small-capacity motorcycles, which remain the dominant mode of transportation in Indonesia. This study aims to analyze the effect of using the AHLM (Adaptive High-Performance, Low-Pollution Muffler) on fuel consumption and engine performance in a Honda 110 cc motorcycle. The research employed a comparative experimental method using three types of exhaust systems: standard, free flow, and AHLM. Tests were conducted using an engine dynamometer to measure torque and power, and a fuel consumption tester to record the time required to consume 10 ml (0.0074 kg) of fuel, calculated using the conversion formula m = (V_ml / 1000) × ρ, at three engine speeds: 1500 rpm, 2500 rpm, and 3500 rpm. The results show that the free flow exhaust produced the highest torque and power, at 10.9 Nm and 11.7 HP at 9000 rpm, respectively, but with higher fuel consumption. Conversely, the AHLM exhaust demonstrated better fuel efficiency, with consumption rates of 0.083 kg/h at 1500 rpm, 0.317 kg/h at 2500 rpm, and 0.416 kg/h at 3500 rpm, closely matching the efficiency of the standard exhaust. Although its peak power was slightly lower, the AHLM maintained stable torque and efficient combustion across all engine speeds. In conclusion, the AHLM exhaust system provides an optimal balance between performance and energy efficiency, offering potential as an adaptive exhaust technology that is both effective and environmentally friendly for small-capacity motorcycles.
Co-Authors Ahmad Roziqin Angga Septiyanto Bayu Bagas Hapsoro Fadhil Fayisa Ni’mal Maula Putra Rizqi Fitri Naryanto Sonika Maulana