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All Journal Journal of Mechanical Engineering Science and Technology Civil and Environmental Science Journal (CIVENSE) Jurnal Elemen Scientific Journal of Mechanical Engineering Kinematika Buletin Profesi Insinyur JTAM ROTARY Logic : Jurnal Rancang Bangun Dan Teknologi Jurnal Inovasi Teknologi Manufaktur, Energi dan Otomotif
Isworo, Hajar
Politeknik Negeri Tanah Laut
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Rancang Bangun dan Pembuatan Mobil Listrik Bertenaga Solar Cell Rachmat Subagyo; Abdul Ghofur; Gunawan Rudi Cahyono; Hajar Isworo; M. Reynaldi Perdana Saputra
Buletin Profesi Insinyur Vol 3, No 1 (2020): Buletin Profesi Insinyur (Januari-Juni)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/bpi.v3i1.58

Abstract

Tujuan proyek ini adalah untuk mengaplikasikan ilmu teknik mesin khususnya konversi energi dalam memanfaatkan energi matahari dengan menggunakan solar cell. Metode yang digunakan adalah eksperimental diawali dengan perancangan mobil listrik yang kemudian dilanjutkan proses pembuatannya. Proyek ini menghasilkan mobil listrik dengan data teknis sebagai berikut: kapasitas penumpang: 6 orang, kecepatan maksimum: 25 km/jam, jarak tempuh: 80 km, kemampuan memanjat ≤ 0,30, jarak pengereman ≤ 4m, Min. Turning Radius: 5 m, Min Clearance: 150 mm, waktu isi ulang 8-10 jam, Daya solar cell: 200 WPKata kunci: teknik mesin, konversi energi, mobil listrik, solar cell
Filtration Design Modeling Study with Variation in Number of Filters, Palm Oil Mill Effluent Meshing Hajar Isworo; Muhammad Khalil; Ika Kusuma Nugraheni; Kurnia Dwi Artika
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1326.099 KB) | DOI: 10.31940/logic.v22i3.260-268

Abstract

Processing activities of oil palm fruit into CPO produce liquid waste that can pollute the environment, so it is necessary to process liquid waste in palm oil mills. This study aims to design the filtration to overcome the existing pollution in the palm oil mill. The table shows the formation of 3 filter ABC formations has the highest speed of 6.419 m/s. When we place a large meshing hole on the first level, the speed and speed are smaller, this can be seen in the CBA, CBAC and CBACB formations. The meshing formation with a small size in the first position can increase the speed and pressure, we can see this in the ABC, ABCA and ABCAB formations so that the oil palm wastewater filtration process can run smoothly without a decrease in fluid velocity.
PENGARUH VARIASI TEMPERATUR PREHEATING DAN KUAT ARUS TERHADAP UJI KEKERASAN DAN STRUKTUR MIKRO HASIL PENGELASAN SMAW BAJA Hajar Isworo; Rachmat Subagyo; Riyan Nur Hidayah
ELEMEN : JURNAL TEKNIK MESIN Vol. 8 No. 2 (2021)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v8i2.172

Abstract

Penelitian ini bermaksud untuk mengetahui efek dari variasi preheating serta kuat arus pada hasil nilai uji kekerasan dan pengujian struktur mikro dari pengelasan SMAW baja ST37. Hasil nilai uji kekerasan dari specimen yang telah didapat, cenderung memiliki angka yang relative tidak berbeda jauh antar semua specimen ditiap tiap bagiannya. tetapi pada bagian HAZ nilai kekerasannya turun drastis jika dibandingkan dengan logam induknya dimana nilainya berkisar 40,6 HRB sampai 54,6 HRB dan nilai kekerasan terendahnya adalah 40,6 HRB didapat dari specimen dengan variasi kuat arus 100A dan preheating 300°C. Dari pengujian struktur mikro dapat dilihat bahwa proses preheating sangat berpengaruh pada hasil sambungan las pada proses pengelasan SMAW baja ST37, ini terlihat jelas pada Hasil pengujian specimen dengan variasi kuat arus 60A dimana semakin besar variasi preheat diberikan maka sambungan las akan semakin baik, dengan variasi preheating paling optimal pada suhu 200°C. Begitu pula pada penggunaan kuat arus 80A dan 100A.
KAJIAN EKSPERIMENTAL DAN SIMULASI CROSS FLOW REVERSAL PADA PROSES FILTRASI MEMBRAN Maruf Maruf; Rachmat Subagyo; Hajar Isworo
ELEMEN : JURNAL TEKNIK MESIN Vol. 8 No. 2 (2021)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v8i2.177

Abstract

Air bersih adalah permasalahan yang masih terus dihadapi oleh masyarakat di wilayah Kalimantan Selatan terutama bagi mereka yang tinggal di kawasan bergambut. Sumber air bersih yang diandalkan adalah air hujan, yang menjadi sangat terbatas ketersediaannya ketika musim kemarau. Tujuan penelitian ini untuk mengkaji lebih mendalam filtrasi membran secara simulasi dan eksperimental. Metode yang digunakan adalah simulasi dan eksperimental. Hasil penelitian pengaruh koagulan Tawas dan variasi filtrasi menurunkan kekeruhan dan kandungan zat organik. Penambahan jumlah filter yang semakin banyak meningkatkan kejernihan hasil filtrasi pada konsentrasi koagulan yang tetap. Banyaknya aliran yang berbalik arah ketika menyentuh permukaan filtrasi menyebabkan zat organik menyebar atau terdispersi sehingga munculnya gerak brownian yang mengakibatkan zat organik lebih efektif untuk melewati filter. Susunan 5 filter formasi CBACB dengan koagulan 140 mg menghasilkan nilai kekeruhan dan kandungan zat organik yang terendah.
PENGARUH CAMPURAN BAHAN BAKAR PERTALITE DAN PERTAMAX TERHADAP NILAI TORSI, DAYA DAN EMISI GAS BUANG SEPEDA MOTOR 150CC: PENGARUH CAMPURAN BAHAN BAKAR PERTALITE DAN PERTAMAX hajar isworo; Kurnia Dwi Artika; Rusuminto Syahyuniar; Anggun Angkasa Bela Persada; Yulima Melsi Lingga; Imron Musthofa; Adhiela Noer Syaief; Rendy Bagus Kurniawan
ELEMEN : JURNAL TEKNIK MESIN Vol. 9 No. 2 (2022)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v9i2.202

Abstract

The problem that occurs today is that many fuel injection vehicles that use Pertamax are switching to Pertalite for economic reasons. This study aims to determine the difference between the use of pure fuel and a mixture of Pertamax and Pertalite fuels on the power, torque and exhaust emissions produced. This study uses the method of collecting data from pure fuel and combining fuel mixtures from 100% Pertamax, 100% Pertalite and 90% Pertamax 10% Pertalite, 80% Pertamax 20% Pertalite, 70% Pertamax 30% Pertalite The result, the highest torque is at Pertamax 100% 12.34 N.m and Max Power 14.15 Hp. The exhaust gas emission content of pure Pertamax is lower, namely CO 15.3%, HC 458 ppm, CO2 8.4%, and O2 5.95%.
PENGARUH VARIASI BUSI DAN BAHAN BAKAR TERHADAP PERFORMA MESIN KENDARAAN RODA DUA 135 CC Kurnia Dwi Artika; Imron Musthofa; Hajar Isworo; Rusuminto Syahyuniar; Rohmat Fahriansyah
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 1 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i1.222

Abstract

Spark plugs are the most important thing in the combustion system. Spark plugs in internal combustion using gasoline significantly affect vehicle performance. Likewise, fuel use must follow the compression ratio in the combustion chamber. The purpose of this study was to obtain the effect of differences in hot, cold, and medium spark plugs on engine performance and also the effect of fuel differences in supporting the performance of pertalite and pertamax two-wheeled vehicles in supporting the performance of 135 CC two-wheeled four-stroke vehicles in 2009. The result with hot spark plugs will maximizer-pm, increasing torque and power with pertalite fuel—the effectiveness of increasing power by 31%.
PENGARUH PENGGUNAAN KATALIS PADA ELEKTROLISIS AIR GAMBUT DALAM MENGHASILKAN GAS HIDROGEN Artika, Kurnia Dwi; Musthofa, Imron; Isworo, Hajar; Persada, Anggun Angkasa Bela; Andhika, Muhammad Yusuf; Pamuji, Dian Ridlo
Jurnal Inovasi Teknologi Manufaktur, Energi dan Otomotif Vol. 2 No. 2 (2024): Jurnal Inovasi Teknologi Manufaktur, Energi, dan Otomotif
Publisher : Politeknik Negeri Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57203/jinggo.v2i2.2024.130-137

Abstract

Electrolysis is a chemical process in which a substance is broken down into its components using an electric current. The application of electrolysis to peat water has the potential to produce hydrogen and oxygen gas and can change the nature of peat water to make it cleaner and more environmentally friendly. This research aims to determine the productivity of Hydrogen Gas regarding variations in the area of ​​origin of Peat Water with the addition of a baking soda catalyst, as well as to determine the pH of the electrolysis results. The results obtained are that the pH of the peat water will decrease to alkaline around pH 12, and hydrogen production will increase when compared to pure mineral water, where samples of peat water from area B produce around 75% faster than pure mineral water and around 45% faster. when compared to areas A, C, and D.
PENGARUH VARIASI BUSI DAN BAHAN BAKAR TERHADAP PERFORMA MESIN KENDARAAN RODA DUA 135 CC Artika, Kurnia Dwi; Imron Musthofa; Isworo, Hajar; Syahyuniar, Rusuminto; Fahriansyah, Rohmat
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 1 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i1.222

Abstract

Spark plugs are the most important thing in the combustion system. Spark plugs in internal combustion using gasoline significantly affect vehicle performance. Likewise, fuel use must follow the compression ratio in the combustion chamber. The purpose of this study was to obtain the effect of differences in hot, cold, and medium spark plugs on engine performance and also the effect of fuel differences in supporting the performance of pertalite and pertamax two-wheeled vehicles in supporting the performance of 135 CC two-wheeled four-stroke vehicles in 2009. The result with hot spark plugs will maximizer-pm, increasing torque and power with pertalite fuel—the effectiveness of increasing power by 31%.
KINERJA POMPA AIR TENAGA SURYA (PATS) DENGAN MENGGUNAKAN POMPA DC 12 VOLT 180 WATT Syaief, Adhiela Noer; Putra, Muhammad Rezky Fitri; Ivana, Reza Taufiqi; Artika, Kurnia Dwi; Isworo, Hajar
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 2 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i2.253

Abstract

The availability of solar energy has great potential for application in the agricultural sector. Electrical power from photovoltaic cells or solar panels mainly depends on sunlight at certain times. The use of this technology can be applied to pump drives in agricultural irrigation systems. In this research, we try to measure a certain time with the efficiency of components from using solar photovoltaic (SPV) with the water discharge produced by the pump on these components. From the experimental results, it was found that the best efficiency was at 14.00 WITA with an efficiency of 57% with the panel facing directly to the sun. From pump testing, it was found that the average water flow was 20.95 liters/minute. From these performance tests, Indonesia itself has sufficient levels of solar radiation to use solar panels as an alternative to sustainable resource.
UJI EKSPERIMENTAL PENGARUH VARIASI PENAMBAHAN ZEOLIT PADA PEMBUATAN BAHAN BAKAR ALTERNATIF DARI OLI BEKAS DENGAN METODE DESTILASI Imron, Imron Musthofa; Rusuminto Syahyuniar; Kurnia Dwi Artika; Hajar Isworo; Reza Taufiqi Ivana
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 2 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i2.270

Abstract

Used oil waste increases every year, engine maintenance waste will increase. Waste oil is classified as B3 waste which requires special treatment. In the development of cities and regions, the amount of fuel used continues to increase due to the increasing number of vehicles and car engines. Even in rural areas, you can find small companies, one of which uses oil. In other words, the distribution of palm oil waste is very wide, ranging from big cities to rural areas in Indonesia. The research process was to convert used oil into constant-temperature heating oil by using a distillation process. The method used aims to find out the best results at temperatures and variations of the zeolite catalyst. 350oC produces 1005 ml of fuel in 90 minutes. While the lowest results were obtained without using a zeolite catalyst to produce 105 ml of fuel. Thus, the use of zeolite is easy and effective in weakening the bonds of the hydrocarbon chains in the oil.
Co-Authors Abdul Ghofur Abdul Ghofur Adhiela Noer Syaief Adhiela Noer Syaief Adi Setiawan, Muhammad Yusuf Akhmad Syarief Andhika, Muhammad Yusuf Andy Nugraha Anggun Angkasa Bela Persada Bela Persada, Anggun Angkasa Candra Dwi Putra Dhenny Sumantri Fahriansyah, Rohmat Fahrozi, Ikhsan Gunawan Rudi Cahyono Ika Kusuma Nugraheni Imron Musthofa Imron Musthofa IMRON MUSTOFA Imron, Imron Musthofa Ivana, Reza Taufiqi Joni Riadi Kurnia Dwi Artika Kurnia Dwi Artika Kurnia Dwi Artika, Kurnia Dwi Lingga, Yulima Melsipa M. Reynaldi Perdana Saputra Ma'ruf Ma'ruf Maruf Maruf Muhamad Noor Yasin Muhamad, Muhajir Muhammad Ibnu Candra Muhammad Khalil Muhammad Khalil Muhammad Khalil, Muhammad Muhammad Rezki Fitri Putra Muhammad Rusdieanoor Mujiburrohman, Ahmad Musthofa, Imron Najib Rahman Pamuji, Dian Ridlo Persada, Anggun Angkasa Bela Pratama, Trendy Pratama, Widya Agung Putra, Muhammad Rezki Fitri Putra, Muhammad Rezky Fitri Rachmat Subagyo Rachmat Subagyo Rendy Bagus Kurniawan Rendy Zakaria Reza Taufiqi Ivana Riyan Nur Hidayah Rohmat Fahriansyah Rusdi, M. Zainul Rusuminto Syahyuniar Rusuminto Syahyuniar Setiawan, Muhammad Yusuf Adi Syahyuniar, Rusuminto Syaief, Adhiela Noer Wicaksono, Bayu Agung Yasin, Muhammad Noor Yulima Melsi Lingga