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Tulus Burhanuddin Sitorus
Departemen Teknik Mesin Fakultas Teknik, Universitas Sumatera Utara, Universitas Sumatera Utara
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Rancang Bangun Instrumen Pengujian dan Penentuan Spesifikasi Mesin Diesel Tanadi, Derrick; Alexander, Ryan; Chandra, David; Sitorus, Tulus Burhanuddin
DINAMIS Vol. 10 No. 2 (2022): Dinamis
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dinamis.v10i2.9838

Abstract

Mesin diesel adalah mesin pembakaran dalam yang beroperasi dengan menggunakan minyak gas atau minyak berat sebagai bahan bakar, dimana bahan bakar tersebut disemprotkan (diinjeksiikan) ke dalam silinder yang di dalamnya sudah terdapat udara dengan tekanan dan suhu yang tinggi sebagai bahan bakar tersebut secara spontan terbakar. Namun masalah terbesar dalam penggunaan bahan bakar adalah dari tahun ke tahun penyediaan bahan bakar yang berasal dari fosil atau gas alam semakin menipis dan ju mlah impor yang semakin meningkat, sehingga diprediksi bahwa Indonesia akan mengalami kelangkaan bahan bakar yang sangat signifikan dimasa yang akan dating. Oleh karena itu pada penelitian ini kami merancang dan membangun sebuah instrumen pengujian dan penentuan spesifikasi dari mesin diesel agar dapat digunakan sebagai suatu alat untuk menguji kelayakan pada suatu bahan bakar baru yang hendak digunakan pada mesin diesel. Hasil dari penelitian ini adalah: 1) Instrumen pengujian terdiri dari digital tachometer, power monitor, temperature control thermostat, pipet ukur, dan dimmer AC. 2) Alat uji terdiri dari generator yang digunakan generator AC sinkron 1 phase, pulley dengan diameter 101,6 mm, belt 42 inchi, dan mesin diesel R175A.
ANALISA DAN UJI EKSPERIMENTAL PERFORMANSI ALAT PENUKAR KALOR KOMPAK JENIS RADIATOR KENDARAAN BERKAPASITAS MESIN 1300 CC Manik, Terang U. H. S. G.; Sitorus, Tulus Burhanuddin; Irfandi, Ridha
Jurnal Sistem Teknik Industri Vol. 20 No. 2 (2018): JSTI Volume 20 Number 2 July 2018
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1746.596 KB) | DOI: 10.32734/jsti.v20i2.482

Abstract

Salah satu komponen sistem pendingin pada mesin pembakaran dalam adalah alat penukar kalor kompak jenis radiator. Performansi suatu radiator berdampak besar terhadap sistem pendinginan mesin. Secara tidak langsung, radiator yang memiliki performansi tinggi akan meningkatkan efisiensi bahan bakar kendaraan melalui pengurangan bobot radiator. Penelitian ini bertujuan untuk menguji performansi radiator secara eksperimental dan perhitungan teoritis. Obyek penelitian ini ialah sebuah alat penukar kalor kompak jenis radiator yang digunakan pada kendaraan berkapasitas mesin 1300 cc. Alat penukar kalor tersebut dipasangkan pada serangkaian alat uji radiator. Hasil penelitian ini menunjukkan kesetimbangan energi yang diperoleh dari hasil eksperimental memiliki penyimpangan maksimum +/- 6 %. Koefisien perpindahan panas maksimum sisi udara dan air ialah 35,3 W/m2.K dan 252,39 W/m2.K. Penyimpangan antara temperatur udara dan air keluar radiator secara teoritis dan eksperimental sebesar rata-rata 8,47 % dan 1,1 %.
Catalytic Pyrolysis of Plastic Waste for Gasoline Fuel: Reaction Mechanism Engine Integration Siahaan, Enzo Wiranta Battra; Sitorus, Tulus Burhanuddin; Ambarita, Himsar; Nur, Taufiq Bin; Ilmi, Ilmi; Simanjuntak, Janter Pangaduan
Automotive Experiences Vol 8 No 2 (2025)
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.13822

Abstract

The escalating accumulation of plastic waste demands not only scalable but integrative conversion solutions. Among thermochemical routes, catalytic pyrolysis has emerged as a promising pathway to produce gasoline-range hydrocarbons from plastic polymers compatible with spark-ignition engines. This review critically evaluates recent advancements in pyrolysis of key plastics polypropylene (PP), polyethylene (PE), polystyrene (PS), polyethylene terephthalate (PET), and polyvinyl chloride (PVC) with a focus on fuel yield, hydrocarbon distribution, and engine-level performance. Comparative analysis reveals PP as the most viable feedstock, achieving up to 85% liquid yield and producing oil with high Research Octane Numbers (RON 85–95), outperforming PE and PS in combustion efficiency and emission compliance. However, persistent challenges such as fuel instability, catalyst deactivation, and elevated aromatic emissions particularly from PS complicate real-world deployment. The review further dissects the interplay between catalyst type, reactor design, and post-treatment, highlighting how these variables modulate product quality and engine operability. Notably, 10–20% PP/PE-derived pyrolysis gasoline blends demonstrate near-parity with conventional gasoline in Brake Thermal Efficiency and regulated emissions, without requiring engine modifications. This work bridges molecular-level reaction chemistry with combustion diagnostics and policy-aligned emission metrics, offering a rare multiscale synthesis. By articulating process-emission-performance trade-offs, it provides a strategic reference for researchers and practitioners aiming to scale waste-to-fuel systems within circular economy frameworks.
Utilization of a Coffee Peeler Machine for Coffee Farmer Groups in Gunung Tua Village Mandailing Natal: Coffee Peeler Machine Sitorus, Tulus Burhanuddin; Nasution, Ahmad Y; Hamsi, Alfian; Lubis, Syaifuddin
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 2 (2022): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v7i2.7749

Abstract

Topographically, the Mandailing Natal district is divided into lowland areas which are coastal areas with an elevation of 00 -20 covering an area of ​​160,500 Ha (24.24%). One of the drivers of economic growth in Mandailing Natal district is plantations. Plantation plants in the Mandailing Natal district can develop coffee, cinnamon, coconut, candlenut, sugar palm, and cloves. However, the level of absorption of agricultural technology is still not as expected, especially for coffee farmers in Gunung Tua village, Mandailing Natal Regency, making coffee productivity from this area less than optimal. From the survey results and discussions with coffee farmer partners in the town of Gunung Tua Mandailing Natal, it was found that there were several problems in the post-harvest process, and one of them was the peeling of the coffee bean skin. So far, most coffee farmers use a coffee peeler manually with a 20 kg/hour capacity and require quite a high operational cost. Therefore, the service implementation team and coffee farmer partners agreed to make a 100 kg/hour coffee peeler machine and an electric motor drive based on these conditions. Test data in the field shows that for a coffee peeler with a capacity of 100 kg/hour, only one liter of fuel is needed to peel 400 kg of coffee beans. This, of course, makes a significant reduction in production costs in the post-harvest process. It is hoped that this machine can work optimally to reduce the production cost of coffee peeling and increase the income of coffee farmers in the village of Gunung Tua Mandailing Natal.
Pengaruh Bahan Bakar Biodiesel dari Dimetil Ester Terhadap Kinerja Mesin Diesel Empat Langkah Sitorus, Tulus Burhanuddin; Zebua, Yosua F.S.R; Sinaturi, Daniel F.B; Siagian, Jonathan A.R; -, Suprihatin; Siagian, Lestina
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 3 No 2 (2022): Edisi Februari 2022
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (823.123 KB) | DOI: 10.36655/sprocket.v3i2.649

Abstract

This study aims to determine the effect of biodiesel fuel from dimethyl ester on four-stroke stationary diesel engines' performance and exhaust emissions. Tests were carried out using B10 and B30 fuels with engine speed variations and load variations without modifying the engine. The results showed that the torque, power, and thermal efficiency tended to decrease when using B10 and B30. In addition, the specific fuel consumption has increased when the engine uses B10 and B30. But exhaust emissions of CO and unburned hydrocarbon (UHC) decreased NOx and increased CO2 when the engine uses B10 and B30. This research also obtains the correlations and regression equations involving engine performance parameters.
PERFORMANSI MESIN DIESEL MENGGUNAKAN BIODIESEL DARI CAMPURAN BIJI KARET-MINYAK PIROLISIS LIMBAH PLASTIK-MINYAK SOLAR Sitorus, Tulus Burhanuddin; Tambunan , Bisrul Hapis; Sihombing , Hendrik Voice; Ambarita, Himsar
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1765

Abstract

This research examines the performance of a Diesel engine that uses alternative fuel biodiesel from a mixture of rubber seeds with plastic waste pyrolysis and diesel oil. The plastic waste used is plastic bottle caps, which are processed by pyrolysis to obtain oil. One of the objectives of mixing biodiesel with plastic waste pyrolysis oil is to increase the calorific value of rubber seed biodiesel. The calorific value of rubber seed biodiesel is 39.95 kJ/kg, and the calorific value of plastic waste pyrolysis oil is 46.55 kJ/kg. Mixing rubber seed biodiesel with plastic waste pyrolysis oil increases the calorific value of rubber seed biodiesel by around 9.63%-13.63%. Experimental results show that there is a reduction in exhaust emissions when using biodiesel for opacity of 7.51-66.08%, CO 12.5-50%, HC 7.14-62.96% and an increase in CO2 emissions of around 3.08-84.62%. Tests using biodiesel were carried out without modifying the Diesel engine.
Co-Authors Abdi Hanra Sebayang Ahmad Yunus Nasution Alexander, Ryan Alfian Hamsi Andi Syahputra Arief Hariyanto Bisrul Hapis Tambunan, Bisrul Hapis David Chandra Elisabeth Ginting Farida Ariani Farida Ariani Ferry Sembiring Gabriel Alexandro Sembiring Ginting, Elizabeth Himsar Ambarita Ilmi Ilmi, Ilmi Irfandi, Ridha Jaya Arjuna Joi Jogi Pakpahan Lubis, Syaifuddin Manik, Terang U. H. S. G. Manik, Terang U.H.S. Ginting Manik, Terang UHS Ginting Manik, Terang UHSG Masudie, Ahmad Muhammad Ibrahim Syah Muhammad Reihan Triandhika Mulfi Hazwi Nasution, Ahmad Y Nur, Taufiq Bin Rachmat Kentardjo Sembiring, Ferry Sembiring, Ferry Siagian, Jonathan A.R Siagian, Lestina Siahaan, Enzo W.B Sihombing , Hendrik Voice Simanjuntak, Janter Pangaduan Sinaturi, Daniel F.B Siti Qeisya Puandhani Siregar Situmorang, Mangontang Suprihatin - Syahrul Abda Syahrul Abda Tambunan , Bisrul Hapis Tanadi, Derrick Tania Alda Tekad Sitepu Tekad Sitepu Wiranto Arismunandar Zebua, Yosua F.S.R Zulkifli Lubis