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All Journal Rotasi FLYWHEEL : Jurnal Teknik Mesin Untirta Teknika: Jurnal Sains dan Teknologi VANOS Journal of Mechanical Engineering Education R.E.M (Rekyasa Energi Manufaktur) Jurnal Jurnal Teknika Machine : Jurnal Teknik Mesin Journal of Renewable Energy and Mechanics Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Eksergi: Jurnal Teknik Energi Al-Ijtima: Jurnal Pengabdian Kepada Masyarakat Journal of Community Service in Science and Engineering Trends in Mechanical Engineering Research Jurnal Polimesin Al-Ijtimā: Jurnal Pengabdian Kepada Masyarakat
Ni Ketut Caturwati, Ni Ketut
Universitas Sultan Ageng Tirtayasa
Religion 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 Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Filter System Designed to Reduce The Emission of Gasoline Motorcycle Pollutants Pinem, Mekro Permana; Yusuf, Yusvardi; Wardana, Muhammad Bayu; Caturwati, Ni Ketut; Listijorini, Erny; Satria, Dhimas; Sukamto, Dwinanto
Machine : Jurnal Teknik Mesin Vol 11 No 2 (2025): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/rwkk7894

Abstract

Clean and healthy air are major topics around the globe. It is because poor air quality hurts human health and is even responsible for the deaths of millions of people. This work develops exhaust pipes containing filters to reduce the pollutants emitted by motorcycles. There are three pollutant concentrations measured here: CO2, CO, and HC. The measurements were taken before and after the filter system so that the pollutant reduction could be calculated.  The maximum pollutant reduction of the filter system: 6.1 % of CO2, 8.0 % of CO, and 651.0 ppm of HC. The primary mechanism of this filter is the physical trapping of pollutants. When the gas flows through the exhaust pipe, the pollutants in the stream are attached to the filter due to direct contact. This change can be visually observed in the filter color, which darkens after use in the exhaust pipe. However, a limitation of this work is its short-term experiment, which lasted only five minutes, indicating a key area for future research. It is also necessary to have alternative filters that are sustainable and can work properly in high-temperature conditions.
Effect of ethanol–RON 92 (pertamax) fuel blends on exhaust emissions of a 2000cc gasoline engine Sudrajad, Agung; Caturwati, Ni Ketut; Sunardi, Sunardi; Khairullah, Adhitya
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6692

Abstract

The technology aimed at reducing dependence on fossil fuels and minimizing exhaust emissions involves the use of ethanol as an alternative fuel. This research investigates the effects of blending ethanol with RON 92 (Pertamax) gasoline on the exhaust emissions of a 2000cc four-cylinder gasoline engine. Experiments were conducted using varying ethanol concentrations, and the emissions of carbon monoxide (CO), hydrocarbons (HC), carbon dioxide (CO₂), and oxygen (O₂) were measured and analyzed. Data were presented descriptively and compared. The results indicate that adding ethanol significantly reduces CO and HC emissions. The lowest CO concentration (0.04%) was recorded with a 10% ethanol blend (BE10%), while the lowest HC emission (2316 ppm) occurred at a 15% ethanol blend (BE15%). Conversely, CO₂ emissions increased with ethanol content, peaking at 8.97% for BE15%. These findings demonstrate the potential of ethanol–gasoline blends to lower harmful emissions, particularly CO and HC, while enhancing combustion efficiency, as reflected by the increase in CO₂ levels.
Solar Energy Integration for Liquid Palm Sugar Processing in Rural Home-Industry Wahyu Herwanto; Erwin; Ni Ketut Caturwati; Slamet Wiyono
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.9450.2

Abstract

This study explicitly aims to evaluate the technical performance and feasibility of a photovoltaic (PV)–battery system in supplying the energy requirements of a liquid palm sugar production machine for rural home-industry applications. Electricity instability in rural areas often disrupts production activities, and although previous studies have demonstrated the potential of solar energy, real-world evaluations for palm sugar processing remain limited. In this research, two 565 Wp solar modules integrated with a 2.2 kW inverter and a LiFePO₄ battery were experimentally tested under actual operating conditions. Real-time data of PV output, irradiance, load demand, and battery condition were recorded. The results show that the PV system consistently supplied 950–1050 W under clear skies and 600–800 W during cloudy conditions, while the battery maintained a stable state of charge (SoC) of 71–85%, ensuring uninterrupted operation. Daily PV energy generation (4.2–4.6 kWh) exceeded load consumption (3.2–3.6 kWh), confirming a positive energy balance. Overall, the system demonstrated stable and reliable performance, indicating that PV–battery integration is feasible for rural MSME-scale liquid palm sugar production.
PERFORMANCE ANALYSIS OF A THERMOELECTRIC GENERATOR (TEG) INTEGRATED INTO A BIOMASS STOVE USING A CONTINUOUS COOLING SYSTEM Hulam Darojati; Imron Rosyadi; Ni Ketut Caturwati; Hery Try Waloyo
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 16 No. 2 (2026): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/mqm25j26

Abstract

This study aims to analyze the performance of a SP1848-27145 SA Thermoelectric Generator (TEG) integrated into the wall of a biomass stove as a small-scale alternative power generation system. The primary objective is to evaluate the effect of implementing a continuous cooling mechanism on the temperature difference (∆T) and the electrical power output. The research was conducted experimentally by varying three main parameters, namely the cooling method, the mass of wood biomass fuel, and the number of TEG modules. The experimental results indicate that continuous cooling using ice-water as the cooling medium provides the most optimal thermal performance, maintaining the cold-side temperature (Tc) as low as 17°C–21°C and producing a maximum temperature difference (∆T) of 54.07°C. The highest electrical performance was achieved using a configuration of two TEG modules connected in series with a 400 g fuel load and ice-water cooling, generating an output voltage of 2.14 V and electrical power of 0.47 W. This performance is nearly four times higher than that obtained using a single TEG module. Furthermore, the efficiency of the two-module TEG system with ice-water cooling reached 3.63%, which is higher than the efficiency of the two-module configuration without cooling, which was only 2.21%.
PERBANDINGAN EFEKTIVITAS SUDUT PENUTUP 450 DAN 600 PADA DOUBLE SLOPE SOLAR DESTILASI SEBAGAI PENYEDIA AIR BERSIH Caturwati, Ni Ketut
Journal of Renewable Energy and Mechanics Vol. 3 No. 02 (2020): REM
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2020.5176

Abstract

Air Bersih merupakan kebutuhan pokok manusia dalam memenuhi kebutuhan hidupnya. Banyak cara yang dapat digunakan dalam menjernihkan air, salah satunya menggunakan alat distilasi surya. Alat Distilasi Surya merupakan alat sederhana dalam membantu masyarakat menjernihkan air dengan menggunakan energi Matahari. Banyak modifikasi desain alat yang dapat dilakukan, salah satunya adalah dengan memodifikasi sudut penutup kaca untuk meningkatkan produktivitas alat distilasi. Inilah yang menjadi tujuan dari penelitian ini, yakni untuk mengetahui kinerja dan efisiensi alat ketika sudut penutup kaca diubah dan ketika sudut berapakah efisiensinya bagus. Metode penelitian yang digunakan adalah metode eksperimental yaitu melakukan pengamatan untuk mencari data sebab akibat dalam suatu dalam suatu proses melalui eksperimen sehingga dapat mengetahui pengaruh kemiringan sudut penutup kaca distilstor surya terhadap produksi air kondensat. Didalam penelitian ini, hasil maksimal kondensat yang diperoleh dari pengujian antara sudut cover 600 dengan 450 adalah sebesar 1133 mililiter yang dihasilkan oleh penggunaan sudut cover 450 dengan rata-rata efisiensi alat 40,07 %.
Co-Authors . Angga, . . Haryadi Agung Sudrajad Agung Sudrajat Alda, Apriyani Aminullah M., Aminullah Aminullah Mawardi Aminullah Mawardi, Aminullah Ana Maulana, Ana Angga Angga Dedy Triawan Suprayogi Dhimas Satria Dimitri Rulianto Dwinanto Dwinanto Dwinanto, Dwinanto Dwinanto, Dwinanto Dwinanto, Dwinanto Eko Prasetyo Endang Suhendi, Endang Erny Listijorini Erwin Fahrizal Pradana Putra Farhan, Dhika Fauzi, Rizki Firda Andini Hadi Wahyudi Harinaldi Harinaldi Haryadi - Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Heri Kusharyanto Hery Try Waloyo Hulam Darojati I Made K. Dhiputra Imron Rosyadi Imron Rosyadi Imron Rosyadi Intifalda, Tegar Khairullah, Adhitya Listijorini , Erny Listijorini, Erny M. Yogi Riyantama Isjoni Mekro Permana Pinem Mekro Permana Pinem Mekro Permana Pinem Mekro Permana Pinem, Mekro Permana Miftahul Jannah Miftahul Jannah Muhammad Affan Adhani Muhammad Ilham Al Faiz Nugroho, Dimas Augie Pinem, Mekro Permana Relawan, I G Putu Reza Reza romi wiryadinata Rosyadi , Imron Rosyadi, Imron Rosyadi, Imron Rosyadi, Imron Saefuloh, Iman Salsabila, Unik Hanifah Saputra, Ehsan Tri Shofiatul Ula Sidik Susilo Slamet Wiyono Sukamto, Dwinanto Sukamto, Dwinanto Sunardi Sunardi Suprayogi, Dedy Triawan Syahrul Ivandy Syarif Abdullah Ula, Shofiatul Ula, Shofiatul Visoka, Cri Kalki Wahyu Herwanto Wahyudi, Hadi Wardana, Muhammad Bayu Wiyono , Slamet Wiyono, Slamet Yudi Septian Yudi Septian, Yudi Yusuf , Yusvardi Yusuf, Yusvardi Yusvardi Yusuf