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All Journal Buletin Udayana Mengabdi Jurnal Energi Dan Manufaktur TEKNIK FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Natural Sciences Engineering and Technology Journal
I Gusti Ketut Sukadana
Program Studi Teknik Mesin. Fakultas Teknik, Universitas Udayana
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Pengaruh penggunaan modifikasi DIS Tipe 2 terhadap gas buang kendaraan I GNP Tenaya; I Gusti Ketut Sukadana
Jurnal Energi Dan Manufaktur Vol 10 No 1 (2017): April 2017
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (581.929 KB)

Abstract

Abstrak Sistem pengapian adalah salah satu faktor yang mempengaruhi proses pembakaran didalam mesin. Gas buang adalah salah satu indikator untuk mengetahui proses pembakaran dan performa mesin. Pengapian dengan modifikasi DIS tipe 2 sistemnya adalah setiap silinder ditangani dengan satu koil pengapian dan tidak menggunakan kabel tegangan tinggi serta titik persambungan yang dapat mengurangi energi pengapian pada area tegangan tinggi. Untuk membuktikan kebenarannya terhadap proses pembakaran maka dilakukan penelitian pengaruh penggunaan modifikasi DIS tipe 2 terhadap gas buang kendaraan. Dalam penelitian ini digunakan kendaraan 1300 cc. Pada putaran 800 rpm sampai 3300 rpm yang menggunakan DIS tipe 2 dan modifikasi DIS tipe 2. Data yang diamati adalah kadar CO, CO2, HC dan O2.Dari hasil penelitian didapatkan pengapian dengan menggunakan modifikasi DIS tipe 2 kadar gas buang CO dan HC lebih rendah sedangkan kadar gas buang O2 dan CO2lebih tinggi jika dibandingkan dengan pengapian menggunakanDIS tipe 2. Kata kunci: DIS Tipe 2, Modifikasi, Gas Buang Abstract The ignition system is a factor which influence the combustion process of engine. Exhaust gas is one indicator to know about a combustion and engine performance. The modification ignition of DIS type 2 system is each cylinder handlled using an ignition coil and it is without the high tenssion cord and also splace points which can be ignition energy decrease in high voltage area. To approve that truth about the combustion process is done by research for the effect of modification DIS type 2 toward vehicle exhaust gas.This research use vehicle in 1300 cc. On the circle about 800 rpm until 3300 rpm which using DIS type 2 and DIS type 2 modification. The data by observed was degree of CO, CO2, HC and O2.From this research, that by DIS type 2 modification ignition, degree of CO and HC was decrease while degree of O2 and CO2 was increase if compare by DIS type 2 ignition. Keywords: DIS Type 2, Modification, Exhaust Gas
Unjuk kerja mesin menggunakan bahan bakar arak Bali berkonsentrasi 90% I Gusti Ketut Sukadana; I Wayan Bandem Adnyana; I Gusti Komang Dwijana
Jurnal Energi Dan Manufaktur Vol 14 No 2 (2021)
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEM.2021.v14.i02.p06

Abstract

Arak Bali which is produced from the distillation process and palm or coconut juice or palm sugar can produce bioethanol with a concentration greater than 90%, not suitable to drink but suitable to be used as fuel. Arak Bali has an octane value of 108.6 and premium fuel has an octane value of 88, so the arak Bali is suitable to be used as alternative fuel. Performance testing was performed using a four-cylinder 125 cc motor vehicle with a compression ratio of 9: 1 using fuels arak Bali compared to premium. Testing is done with engine rotation variation from 3000 rpm, 3500 rpm, 4000 rpm, 4500 rpm, 5000 rpm for performance: torque, power, fuel consumption, specific fuel consumption and exhaust emissions include: hydrocarbon, carbon monoxide, oxigene and carbon dioxide. Testing results the performance of the machine using fuel arak Bali produces the highest torque of 7.15 Nm, the highest power of 5.606 Kw, fuel consumption of 0.161 grams / sec at engine speed 3000 rpm. Specific fuel consumption is 0.1172 kg / kWh at engine speed 5000 rpm. Exhaust emissions generated in the form of hydrocarbon, carbon monoxide, oxigene and carbon dioxide, to indicate that the arak Bali can be used as alternative fuel.
Penentuan dimensi perpipaan sistem pompa paralel Anak Agung Adhi Suryawan; Made Suarda; I Gusti Ketut Sukadana
Jurnal Energi Dan Manufaktur Vol 9 No 1 (2016): April 2016
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Abstrak:Sistem pompa paralel direncanakan untuk mendapatkan kapasitas pemompaan yang lebih besar, yaitu hasil perkaliandari kapasitas masing-masing pompa dengan jumlah pompa yang beroperasi. Namun pada kenyataannya di lapangan,kapasitas aliran air yang dialirkan oleh sistem paralel tiga unit pompa booster jauh lebih kecil dari tiga kali kapasitasspesifikasi pompanya. Padahal, jika pompa tersebut dioperasikan hanya satu unit menghasilkan kapasitas sesuaidengan spesifikasi pompanya. Hal tersebut disebabkan karena unjuk kerja sistem pompa sangat dipengaruhi olehsistem instalasi perpipaannya. Untuk itu perlu dilakukan pengujian sistem perpipaan pompa booster untukmendapatkan model instalasi perpipaan yang dapat menghasilkan unjuk kerja yang optimal. Penelitian ini dilakukandengan membuat sebuah model yang serupa dengan aslinya namun dimensinyag diperkecil. Pengujian dilakukan padavariasi diameter pipa header dengan sudut tee pada pipa hisap unit pompa 90o (tee-T) dan 45o (tee-Y), danmemvariasikan panjang serta diameter pipa hisap pompa. Hasil penelitian menghasilkan sebuah prosedur disain danformula dimensi perpipaan instalasi pompa paralel yang menghasilkan unjuk kerja pompa yang terbaik.Kata kunci: Sistem pompa pararel, header pipa, T-yee, pipa isap, unjuk kerja pompaAbstrac:tA parallel pump system is planned to get a greater pumping capacity. Total capacity of a parallel pump is the product ofthe capacity of each pump with the number of operating pumps. But in fact on the most applications, for instant, theflow capacity of water delivered by the three unit parallel pump system is much smaller than three times the capacity ofthe pump specifications. In the other hand, if the pump is operated only one unit it generated capacity in accordancewith the pump specifications. This is caused by that the pump system performance is strongly influenced by the pipinginstallation systems. Therefore, It is necessary for testing the piping system of parallel pump to get a parallel pumppiping model that can produce the best performance. The research was done by creating a parallel pump model that issimilar to the original but with smaller dimension. Tests performed on the header pipe diameter variation with angle ofthe tee on the suction and discharge pipe pump is 90? (tee-T) and 45? (tee-Y), and varying the length and diameter ofthe pump suction pipe. The results of the study find a design procedure and formulas in determining dimension ofpipeline parallel pump installations that generates the best pump performance.Keywords: parallel pump system, header pipe, tee-Y, suction pipe, pump performnace
Perancangan rasio gigi dan jumlah tingkat kecepatan gigi transmisi untuk mendapatkan kinerja traksi kendaraan yang optimum IGN Priambadi; I Ketut Adi Atmika; IGK Sukadana
Jurnal Energi Dan Manufaktur Vol 1, No.2 Desember 2006
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Performa otomotif adalah salah satu aspek penting dalam menentukan daya saing suatu produk otomotif. Salah satu performa yang penting adalah kemampuan kendaraan untuk melakukan percepatan, melawan hambatan angin, melawan hambatan rolling, melawan gaya tanjakan dan kemungkinan untuk menarik suatu beban. Gaya yang timbul pada roda penggerak untuk melawan hambatan tersebut disebut dengan gaya dorong atau gaya traksi. Besar kecilnya traksi untuk setiap tingkat gigi serta kecepatan kendaraan yang mampu dicapai dapat dikendalikan dengan mengatur ratio dan tingkat transmisi. Ratio transmisi berpengaruh terhadap besarnya torsi yang dapat ditransmisikan, sedangkan jumlah tingkat kecepatannya berpengaruh terhadap kehalusan (smoothness) proses transmisi dan transformasi daya pada sistem transmisi tersebut. Untuk mencari perbandingan gigi antara tingkat transmisi terendah dan tertinggi adalah dengan cara progresi geometri. Dasar dari penggunaan metode ini adalah untuk mendapatkan ratio dan jumlah tingkat kecepatan gigi transmisi pada daerah kecepatan operasi mesin yang sama sehingga fuel economy pada setiap gigi akan sama. Modifikasi ratio gigi menghasilkan kurva traksi dimana jarak kurva gigi yang berdekatan semakin dekat. Hal ini menunjukkan kehilangan daya waktu pemindahan gigi transmisi semakin kecil, atau dengan kata lain kinerja traksinya semakin baik. Perancangan ratio dengan pemasangan 6 tingkat kecepatan,menghasilkan kurva traksi dengan jarak antara kurva traksi sengat dekat, berarti kinerja traksinya paling baik.
The influence of Compression Ratio to Performance of Four Stroke Engine Use of Arak Bali as a Fuel I Dewa Made Krishna Muku; I Gusti Ketut Sukadana
Jurnal Energi Dan Manufaktur Vol 3, No.1 April 2009
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Arak bali is alternative fuel as ethanol. Ethanol has octane number 108. Octane number which was higher can over come adetonation, and can work at higher compression ratio. This experiment has done to now how the effect of compression ratiovariation to the performance four strokes engine by arak bali fuel. This research was done by changing the compressionratio that is 8,8 : 1, 8,9 : 1, 9 : 1 and 9,3 : 1. The change was done by reducing combustion chamber by scrap the cylinderhead. The result, for the used arak bali fuel to the vehicle is, if engine compression ratio to increase can be influence ofengine performance to be increase and engine fuel consumption to be decrease. For premium is, if engine compression ratioto increase to influence of engine performance to be decrease and engine fuel consumption to be increase.
Studi Eksperimental Pengaruh Variasi Bahan Kering Terhadap Produksi dan Nilai Kalor Biogas Kotoran Sapi I Putu Awing Wiratmana; I Gusti Ketut Sukadana; I Gusti Ngurah Putu Tenaya
Jurnal Energi Dan Manufaktur Vol 5 No 1 (2012): Oktober 2012
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Biogas produced from the fermentation of organic matter by anaerobic bacteria. The calorific valuecontained in biogas depends on the concentration of CH4. Tthe production of CH4 in biogas is affected by CNratio on dry matter which is between 25:1 - 30:1. Cow manure has a C-N ratio of 18:1, so it should beadded to other materials, namely rice husk which has a C-N ratio of 65:1. The purpose of this study is toinvestigate the effect of the addition of rice husk to the production and calorific value of manure biogas.Thetest was performed with a batch system with the addition of15%, 18%, 21% and 24% of the total rice husk100% by weight of dry ingredients used. Observed data was a water manometer height change (?h), themass of biogas and gas composition on biogas.The results shows that the addition of 21% rice husk 100%had the highest production of 0.0597 kg and the highest calorific value is 55,017 kJ and 75.034 kJ byeksperimental and theoretical with CH4 compositon was found 80%.
ANALISIS VARIASI JARAK PEMBULUH TERHADAP UNJUK KERJA KONDENSOR AAIAS Komala Dewi; IGK Sukadana
Jurnal Energi Dan Manufaktur Vol 2, No.2 Desember 2007
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

The serpentine tube heat exchanger is one of most widely used heat exchanger to release heat by natural convection. The ability of the tube heat exchangerto release the heat is represented by its efficiency. The present research analyzed the effect of space between tubes and the mass flow rate to the tube heat exchanger efficiency. Three serpentine tube spaces (4 cm, 5 cm, and 6 cm, respectively), and three mass flow rates (0.015 kg/s, 0.018 kg/s, and 0.021 kg/s, respectively) were varied experimentally. The result showed that the highest efficiency was reached with mass flow rate 0.021 kg/s and space between tubes 5 cm.
PENGARUH PENGGUNAAN ARAK BALI SEBAGAI BAHAN BAKAR PADA MESIN EMPAT LANGKAH DENGAN RASIO KOMPRESI BERVARIASI I Gusti Ketut Sukadana; I Gusti Ngurah Putu Tenaya
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume II Nomor 1, April 2016
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.238 KB) | DOI: 10.36055/fwl.v0i1.715

Abstract

Arak Bali adalah bahan bakar alternativ dengan kandungan ethanol yang sangat tinggi. Arak Bali dengan kadar ethanol lebih besar dari 80 persen mempunyai nilai oktan 108. Angka oktan yang besar memiliki sifat yang dapat mengatasi terjadinya detonasi, dan dapat bekerja pada rasio kompresi mesin lebih tinggi. Penelitian ini dilaksanakan untuk mengetahui pengaruh dari variasi rasio kompresi terhadap unjuk kerja mesin empat langkah dengan bahan bakar arak Bali. Penelitian ini dilaksanakan dengan merubah rasio kompresi mesin (8,8 : 1, 8,9 : 1, 9 : 1 dan 9,3 : 1). Perubahan dilakukan dengan cara memperkecil volume sisa ruang bakar, dengan cara mensekrap kepala silinder. Penelitian ini menghasilkan, dengan menggunaankan arak Bali sebagai bahan bakar pada mesin empat  langkah. Jika rasio kompresi mesin diperbesar dapat berpengaruh pada meningkatnya unjuk kerja mesin dan menurunkan tingkat konsumsi bahan bakar  mesin. Untuk bahan bakar premium, jika rasio kompresi mesin diperbesar dapat menurunkan unjuk kerja mesin dan meningkatkan konsumsi bahan bakar  mesin.
Pengaruh minyak zippo pada kecepatan rambatan api dan residu dari komposit epoksi dengan penguat serat jute N.M.A.R. Adriani; I.G.K Sukadana; I.G.A.K.C. Adhi; I.D.G.A. Subagia
Dinamika Teknik Mesin Vol 11, No 2 (2021): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (861.184 KB) | DOI: 10.29303/dtm.v11i2.461

Abstract

This study investigated the rate of flame propagation and residue quality of epoxy composite with jute fiber reinforcement. Three layer of jute fibers were stacked as reinforcement of composites. It was manufactured by the injection method (vacuum assisted injection, VARI). In this study, the zippo oil as flame trigger was added on the specimen. This study aims to investigate the effects of zippo oil on the rate of flame propagation and residue of composites. The flame rate testing was based on ASTM D 635 standard, with repetitions of 5 times for each sample that conducted inside of the combustion chamber. Test results obtained in addition to carbon dioxide (CO2) are carbon monoxide (CO) and methane (CH4), as well as dust particles (PM10). The result of measuring the flame propagation rate with zippo fuel is 0.23 mm/s, while composite without zippo oil is 0.17 mm/s. Furthermore, CO2 residue with zippo oil addition is 1.55% and without zippo oil is 1.57%, respectively. Meanwhile, residual test results for contaminants such as carbon monoxide (CO) and Methane (CH4) from composites with the addition of zippo oil were 0.006 % and 0.008% respectively. In additional, the remaining composite burned without zippo oil has an equal value of CO and methane about 0.002%. The conclusion shows that there was an increase of flame propagation rate and residual value produced after the addition of zippo oil, and that pollutant residues exceeded threshold value.
Simulation of Airflow Patterns and Aerodynamic Forces on a Chambered Airfoil and Symmetric Airfoil with Maximum Thickness Variation I Gede Kartana; Anak Agung Adhi Suryanwan; I Gusti Ketut Sukadana
Natural Sciences Engineering and Technology Journal Vol. 3 No. 1 (2023): Natural Sciences Engineering and Technology Journal
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/nasetjournal.v3i1.26

Abstract

Flow across the airfoil can cause drag and lift forces. The difference in pressure between the top and bottom surfaces of the airfoil creates a force that is perpendicular to the flow of fluid, and this force is called the lift force, and parallel to the flow is called the drag force. The author conducted research on simulating airflow patterns across the airfoil with maximum thickness variations. In this research, the simulation method is CFD (Computational Fluid Dynamic) using ANSYS Fluent software. The solution or solver method used in this simulation is the SIMPLE (Semi Implicit Method for Pressure Linked Equation) scheme. The flow pattern is shown by the streamline formed on the symmetric airfoil for α=0°, which will be symmetric, as well as the separation on the two sides, both the upper and lower sides. In contrast to the chambered airfoil, flow separation occurs only on the upper side. This indicates that there will be a pressure difference on the upper side and lower side so that the lift force can occur even though α=0°, because the lower side shows the pressure side. The greater the maximum thickness, the faster flow separation occurs. Then the higher the velocity value, the flow separation will be delayed due to an increase in the momentum of the working fluid flow, which overcomes the shear stress that occurs. At the angle of attack α=0°, the greater the maximum thickness of the chambered airfoil produces a greater lift force, while the symmetric airfoil does not produce lift.
Co-Authors AAIAS Komala Dewi Anak Agung Adhi Suryanwan Anak Agung Adhi Suryawan Anak Agung Adhi Suryawan I .G. P. Agus Suryawan I Dewa Gede Ary Subagia I Dewa Made Krishna Muku I Gede Kartana I Gusti Komang Dwijana I Gusti Komang Dwijana I Gusti Ngurah Bagus Surya Pratama I Gusti Ngurah Dwijana I Gusti Ngurah Priambadi I Gusti Ngurah Putu Tenaya I Ketut Adi Atmika I Made Astika I Made Dhanu Wijaya I Made Parwata I Putu Awing Wiratmana I Putu Widiarta I Putu Widiarta I Putu Widiarta I Wayan Angga Widianta Putra I Wayan Bandem Adnyana I.G.A.K.C. Adhi I.K.G. Wirawan Ishak Danus Ketut Astawa M.Pd S.T. S.Pd. I Gde Wawan Sudatha . Made Suarda Made Sucipta Marcel Bonifacio Tirta Wijata Mathias Noviantoro N.M.A.R. Adriani Ni Wayan Sugiarti Putu Lokantara