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Published by Universitas Merdeka Malang
ISSN : 02163233     EISSN : 25802283     DOI : -
Core Subject : Engineering,
Automotive Engineering Control & Systems Engineering
Jurnal TRANSMISI dipublikasikan oleh Jurusan Teknik Mesin Universitas Merdeka Malang sebagai media diseminasi hasil penelitian dan karya ilmiah baik penelitian dasar maupun terapan di bidang teknik mesin. Berkala ilmiah ini memuat naskah dengan bidang kompetensi konversi energi, material (metalurgi), produksi dan manufaktur baik merupakan penelitian dasar ataupun rekayasa alat terapan.
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Articles 238 Documents
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PENGARUH VARIASI WAKTU TAHAN DAN AUSTEMPER 400 0 C TERHADAP KARAKTERISTIK BESI TUANG NODULAR SETELAH PENAMBAHAN UNSUR PADUAN 0,15% Mo, 1,5% Ni, 0,2% Cr Supriyanti, Wiwik
Jurnal Teknik Mesin Transmisi Vol 1, No 1 (2005): Jurnal Transmisi
Publisher : Jurnal Teknik Mesin Transmisi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Besi tuang nodular memiliki sifat mekanis yang baik dan mendekatisifat mekanis dan sifat fisik baja, seperti kekuatan tarik, regangan,kemampuan terhadap proses perlakuan panas, mampu meredam suaradan biaya produksi relatif lebih murah daripada baja, sehingga besituang nodular banyak digunakan sebagai bahan dasar untukpembuatan komponen mesin dan kendaraan otomotif. Perbaikan sifatsifatmekanis agar sesuai dengan kebutuhan dapat juga diperolehdengan penambahan unsur-unsur paduan seperti : chromium (Cr),molybdenum (Mo) dan nickel (Ni). Metode lain untuk meningkatkansifat mekanis besi tuang nodular adalah dengan melakukan prosesperlakuan panas austemper, sehingga menghasilkan besi tuangnodular austemper atau dikenal dengan sebutan Austempered DuctileIron (ADI). Proses austemper diawali dengan austenisasi padatemperatur 800 0 C selama 60 menit, dilanjutkan dengan austemperpada temperatur 400 0 C dengan waktu tahan masing-masing 15, 30,45 menit. Pengujian tarik, kekerasan dan pengamatan struktur mikrodilakukan untuk menganalisa hasil proses austemper. Berdasarkanhasil penelitian, bahwa temperatur pemanasan 800 0 C belum terjadiaustenisasi, sehingga tidak terjadi perubahan fasa menjadi fasaaustenit (), akibatnya proses austemper 400 0 C yang dilakukanhanya mempengaruhi perluasan matrik ferit () atau terjadi anilferitisasi dan tidak terjadi pembentukan bainit pada besi tuangnodular dengan penambahan 0,15 % Mo, 1,5 % Ni dan 0,2 % Cr.Hasil ini terlihat dari kenaikan nilai elongasi dengan penurunan sifatkekerasan.
ANALISA PERBANDINGAN PERFORMANSI SINGLE DAN DOUBLE TURBOCHARGER PADA CUMMINS ENGINE K50 SERIES Hein Hein; Puji Saksono; Gunawan Gunawan
TRANSMISI Vol 12, No 2 (2016): Edisi September 2016
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (501.153 KB) | DOI: 10.26905/jtmt.v12i2.943

Abstract

Application development engine in the heavy equipment is currently lead to the development of environmentally friendly technologies but with a better performance without changing the size or dimensions of the engine. Performance comparison analysis between Cummins engine applications which use single and double turbocharger to the performance, efficiency and fuel comsumtion required to provide a reference for users of heavy equipment unit (customer). This research was conducted at PT. Altrak Balikpapan branch in 1978 as a distributor of Cummins engines Indonesia. The research object is the Cummins engine type "K50" series with KTA-50 engine models and KTTA-50. Achievement of maximum engine power in the can with the provision of 100% load at 1900 rpm engine speed, which amounted to 1798 HP at KTA-50 and 1993 HP at KTTA-50. The increase in the value of the torque which can be different from the values ??of engine power, because the maximum torque is not in a position rated speed but at 100% load at 1500 rpm engine speed. This position is often referred to as the peak torque and the maximum torque values ??in may of 1487 lb.ft at KTA-50 and 1656 lb.ft at KTTA-50. The result of the calculation is theoretically found also that with the increase in engine power then an increase in fuel consumption linearly. The thermal efficiency of the engine KTTA-50 amounted to 42.29% larger than the engine-50 summit that only 42.23%.
TENDA BARAK PENGUNGSI BERTENAGA SURYA MULTIGUNA FA Widiharsa; Nurhamdoko Bonifacius
TRANSMISI Vol 12, No 2 (2016): Edisi September 2016
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.588 KB) | DOI: 10.26905/jtmt.v12i2.944

Abstract

Applications of integrated photovoltaic electrical energy promises 'clean and mean'. People considered 'clean' because there is no exhaust emissions or pollutants and is considered 'saving' because it does not require fuel. In the tropics, sunshine reaching Earth's surface. Sunlight is the source of electrical energy. Electrical energy is urgently needed in the refugee camps in remote areas (remote areas) and or a natural disaster. In such locations, providing electrical energy becomes a major problem. Generator sets are easy to use but the problem is the availability of fuel oil. Transportation of fuel to remote locations make the price of fuel becomes economically feasible. On the other hand, solar electric energy can be obtained free of charge at the site, without the distribution line and without transmission. The price of solar power is the price of the device alone, being free electricity. Solar power generation is to be constructed. Increased capacity is easy to do because only adds to the module unit. Methods of laboratory experiments conducted in outer space. Book study to identify the needs of a wide and electrical load of refugees activity. Experiments in the laboratory standardization of outdoor space to get daily energy output. It is also related to the need and the unit load. Experiments were also conducted to standardize the system, the test model of a solar power plant integrated multipurpose, build a prototype.
ANALISIS KINERJA GEOMETRIK IMPELLER POMPA SENTRIFUGAL BERBASIS PERANGKAT LUNAK Darto Darto; I Made Sunada
TRANSMISI Vol 12, No 2 (2016): Edisi September 2016
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (661.373 KB) | DOI: 10.26905/jtmt.v12i2.949

Abstract

On the centrifugal impeller is a part that converts the mechanical energy (energy in the blades of the impeller) is passed on to the pump power and efficiency as a result of (their fluid friction losses) due to changes in the flow direction of the blades of the impeller. To obtain performance centrifugal pump impeller, so it needed a thorough analysis, one of which is the analytic geometry. To speed up the process and analytical results are accurate then use the software. In this analysis used software Turbo CF 9.2.8. In this analysis used primary data in the form of geometric parameters of centrifugal pumpa as an input to the software used. The conclusions in the can are the theoretical performance data from the pump impeller type can be generated quickly and accurately.
ANALISA KEBUTUHAN ENERGI MOTOR LISTRIK PADA PROTOTYPE MOBIL HYBRID Sueb Herdianto; Mardjuki Mardjuki; Suprayogi Suprayogi
TRANSMISI Vol 12, No 2 (2016): Edisi September 2016
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.816 KB) | DOI: 10.26905/jtmt.v12i2.951

Abstract

Environmental pollution and fuel savings are a significant problem for the life of the future. The need-based electric vehicle that can replace the use of energy. Therefore, the hybrid vehicle is a vehicle that is right for a solution to reduce environmental pollution and save fuel. In addition to the hybrid vehicle has several sections, among which the use of electric motors. The aim is to meet the energy needs of a DC electric motor as a vehicle drive hybrid cars, so as to determine the electric motor in accordance with the needs and characteristics of the hybrid car. Besides the basic principle is to try to design a machine that relate to the needs of its specifications. Then obtained the results of research on the use of current and voltage when the gas pedal is pressed / stamped starts from 10o - 50o can be concluded that the more the gas pedal board, the increasing speed with an electric motor rotation of 794 (rpm), 47.56 voltage (volts ), the current 20.3 (ampere), then the required power DC electric motor that is equal to 984.75 (watts).
PENGARUH PEMBEBANAN OVERLOAD BUCKET TERHADAP KEKUATAN MATERIAL KOMPONEN ARM PADA EXCAVATOR VOLVO EC700B TIPE CRAWLER Lia Pongsapan
TRANSMISI Vol 12, No 2 (2016): Edisi September 2016
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (399.386 KB) | DOI: 10.26905/jtmt.v12i2.953

Abstract

Volvo Excavator EC700B crawler type used in coal mining to remove coal and top soil. The maximum capacity of the bucket according to the standard Volvo Construction Equipment is 8.28 tonnes, but the actual experience in the field bucket overloaded with cargo capacity increased to 12.14 tonnes. This study analyzes the components of arm strength when holding the bucket on the working conditions of overload. Materials made of ASTM A36 arm with allowable stress limit (yielding point) of 290 N / mm2. The results showed the increase in value of the force and stress on the arm component loading conditions overload at 28-32% of normal loading conditions. The maximum voltage occurs at the bracket arm hydraulic cylinder that is equal to 150.4 N / mm2. The voltage value is smaller than the allowable stress of material, so the material at arm component complies with the standards of eligibility and declared safe.
PENGARUH KETEBALAN PEMAKANAN TERHADAP KEKASARAN PERMUKAAN PADA MATERIAL S45C Budha Maryanti
TRANSMISI Vol 12, No 2 (2016): Edisi September 2016
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (335.476 KB) | DOI: 10.26905/jtmt.v12i2.956

Abstract

Process that uses a CNC lathe is required to have the results of surface roughness (roughness) is small with a definite degree of roughness. To get the product that has a surface roughness as expected, can be influenced by several factors one of which is the thickness of the funeral. The purpose of this study to determine the extent of the influence of the thickness of the funeral to the surface roughness at S45C material. This research was carried out on the shaft material S45C specimens with diameter of 50 mm with a rotary speed of 1600 rpm using a CNC turning machine MT3040. Ingestion thickness variation using a 0.1 mm; 0.15 mm; 0.2 mm; 0.25 mm and 0.3 mm. Ingestion of motion while using only 0.15 mm / rotation by using a chisel insert VCMT 160 404 with a chisel tip radius of 0.4 mm. Results of research for the material S45C 50 mm diameter suitable parameter is the funeral 0.15 mm thick at 1600 rpm rotation produces minimum roughness Ry, Rmax = 11.76 ?m and 0.10 mm thick feeds at 1600 rpm rotation Ra = 2.67 ?m, and Rz = 11.03 lm. Meanwhile, if the funeral 0.30 mm thick and round 1400 rpm generate greater roughness is Ra = 3.65 ?m, Ry (Rmax) = 16.07 ?m and Rz = 13.28 lm
ANALISA UMUR PAKAI IDLER BARU DAN IDLER REKONDISI UNIT CAT D7G Michael Davit Sambuari; Sadat N. S. Sidabutar
TRANSMISI Vol 13, No 1 (2017): Edisi Pebruari 2017
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (515.364 KB) | DOI: 10.26905/jtmt.v13i1.2000

Abstract

Dalam pengoperasian alat berat bulldozer D7G di pertambangan batu bara, hal yang harus diperhatikan adalah laju keausan pada bagian undercarriage. Undercarriage adalah bagian alat berat yang terletak pada bagian bawah bulldozer yang langsung bersentuhan dengan permukaan tanah, air, batubara, dan material lainnya.Undercarriage mempunyai beberapa komponen, diantaranya yaitu : track frame, track roller, carrier roller, idler, sprocket, track link, track shoe, dan guard. Dari hasil penelitan dan analisa penentuan waktu penggantian quality track servis pengukuran keausan idler, dan diambil data pengukuran umur pakai pada setiap idler yaitu 16 idler baru dan 16 idler rekondisi didapatkan rata-rata usia pakai pada idler baru yaitu selama 2133 jam, sedangan pada idler rekondisi didapatkan rata-rata usia pakai yaitu selama 1755 jam. Jika dilihat secara keseluruhan diketahui bahwa idler baru mempunyai umur pakai yang lebih lama daripada idler rekondisi.
ANALISA PENGARUH PENAMBAHAN RACOR PADA SISTEM BAHAN BAKAR MITSUBISHI TYPE KB4 T COMMON-RAIL Ariyawan Syahroni; Marsius Ferdnian
TRANSMISI Vol 13, No 1 (2017): Edisi Pebruari 2017
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (690.763 KB) | DOI: 10.26905/jtmt.v13i1.2001

Abstract

Kebutuhan energi yang diperoleh bahan bahan bakar oleh sistem motor pembakaran dalam dikonversikan menjadi kerja yang berhasil guna tinggi, yakni menjadi energi gerak yang dapat mentransportasikan muatan dari suatu tempat ke tempat yang jauh jaraknya. Sehingga dapat bermanfaat bagi kehidupan manusia. Pada sistem distribusi bahan bakar pada kendaraan Mitsubishi Strada Triton Type KB 4 T Common Rail terdapat penyaringan bahan bakar (fuel filter) namun kadang kala terikut air dalam bahan bakar yang mengakibatkan tidak sempurnanya pembakaran bahan bakar di ruang bakar, bahkan ada juga terdapat komponen pada injektor mengalami kerusakan. Dengan penambahan alat pemisah air dari bahan bakar yang disebut Racor pada sistem distribusi bahan bakar dihasilkan kadar air dalam bahan bakar yang menuju ke ruang bakar dapat ditiadakan serta dapat menyaring yang memberikan efek pembakaran bahan bakar di ruang bakar semakin baik disertai dengan komponen injektor terpelihara yang menuju ruang bakar.
ANALISA PENGGUNAAN BAHAN FIBER CARBON UNTUK LAPISAN PENAHAN PANAS PADA NOZZLE PULSE JET GUNA MENINGKATKAN GAYA DORONG Riyan Ardi; Moch Ma'ruf; S Iman Santoso
TRANSMISI Vol 13, No 1 (2017): Edisi Pebruari 2017
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (628.928 KB) | DOI: 10.26905/jtmt.v13i1.2002

Abstract

Pulse jet merupakan sebuah mesin menggunakan prinsip pembakaran berselang atau disebut juga intermitten combustion. Pulse jet dapat digunakan sebagai engine roket. Fiber carbon (serat karbon) sebagai material penahan panas terbaik berfungsi sebagai penahan panas agar tidak terjadi transfer panas yang berlebihan pada chamber dan nozzle terhadap body roket. Metode penelitian dilaksanakan dengan cara memvariasikan interval waktu sebanyak 5 (lima) kali percobaan untuk mendapatkan temperatur gas, temperatur udara luar dan beda ketinggian fluida yang dihasilkan untuk menghitung pengaruh perubahan laju perpindahan panas dan perubahan gaya dorong pulse jet sebelum dan sesudah dilapisi bahan isolator fiber carbon (serat karbon). Hasil penelitian diperoleh dengan laju energi kalor (Q) dan gaya dorong (F) pada pulse jet mengalami peningkatan setiap terjadi kenaikan temperatur gas. Pada interwal waktu 3-12 detik terjadi peningkatan laju energi kalor (Q) dari 81,552 kW – 129,202 kW dan gaya dorong (F) dari 93,749055 N – 95,0765281 N tanpa menggunakan isolator fiber carbon (serat karbon). Sedangkan pada interwal waktu 3-12 detik dengan menggunakan isolator fiber carbon (serat karbon) terjadi peningkatan laju energi kalor (Q) dari 95,558 kW – 194,995kW dan gaya dorong (F) dari 94,9659053 N – 96,625246 N dan mengalami efisiensi 14,664% - 33,734%. Dari data tersebut dapat disimpulkan bahwa pengaruh fiber carbon (serat karbon) sangat besar terhadap kinerja pulse jet pada chamber dan nozzle, yang dapat meningkatkan laju energi kalor dan gaya dorong pulse jet.

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