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Menentukan Maintenance And Repair Mesin Ditinjau dari Getaran dan Emisi Gas Buang Pada Mesin Diesel Komatsu Type 6D 125 – 2 Sudiyono, ; Bambang Antoko,
Otopro Vol 7, No 2 (2012)
Publisher : Otopro

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Abstract

Maintenance and repair yang dilakukan pada mesin diesel ataupun mesin yang lainnya ditentukan berdasarkan jenis kerusakan yang dialami, pengalaman atau teknisi yang berpengalaman. Namun dengan kondisi dari mesin yang tetap bekerja dan dengan mudah dapat dilakukan pengukuran dari getaran dan emisi gas buang akan bisa menentukan apakah mesin tersebut perlu dilakukan maintenance and repair. Dari hasil pengukuran getaran tersebut akan bisa ditelusuri bagian mana yang mengalami keausan ataupun kerusakan baik bagian – bagian mesin yang bergerak maupun yang tidak bergerak. Sedangkan hasil pengukuran emisi gas buang akan bisa menentukan perbaikan mulai dari sistem bahan bakar yaitu pompa bahan bakar, injektor maupun jenis nozzle yang menyemprotkan bahan bakar. Emisi gas buang adalah akibat dari sistem kerja pompa bahan bakar, injektor dan nozzle yang mengalami gangguan, dan dikenal dengan istilah condition monitoring. Condition Monitoring adalah proses memonitor kondisi dari sebuah mesin sehingga bisa diketahui apakah dalam kondisi baik atau mulai ada gejala rusak. Dengan kata lain: Medical Check Up nya mesin. Dari hasil pengujian getaran dan hasil analisa pengujian emisi gas buang diperoleh bahwa pada kondisi rpm mesin 900, getarannya (acceleration, desplacemen dan velocity) tinggi, seiring dengan kenaikan rpm mesin sampai 1244 getarannya cenderung turun, hal ini menunjukan mesin dalam kondisi normal. Untuk emisi gas buang kandungan CO tinggi pada rpm mesin 900 seiring dengan kenaikan rpm mesin sampai 1244 kandungan CO turun, sebaliknya kandungan NO dan NOx cenderung naik, hal ini menunjukkan mesin dalam keadaan normal tidak memerlukan maintenance dan repair dalam waktu dekat.   Kata kunci:Maintenance, repair, mesin diesel, emisi gas buang, getaran   ABSTRACT   Maintenance and repair was conducted to diesel engine or other engine that are determined based on the type of damage suffered, or be experienced technician. However the condition of the engine is working and can be easily to carried out measurements of vibration and exhaust emissions will be able to determine whether the machine needs to maintenance and repair. From that results of vibration, measurements will be able to trace which parts that moving or not moving. While the results of measurement of exhaust emissions will be able to determine of improvement from that fuel system which called the fuel pump, injector and nozzle type that spraying fuel. The impact of these emissions is the result of work on the fuel pump, injector and nozzle have been affected, and called as condition monitoring. Condition Monitoring is the process of monitor condition from a machine so that can be known the condition of the engine is in good condition or damaged from any symptoms that called engine’s Medical Check Up. The results of vibration testing and analysis of exhaust emissions testing that had reached to condition of the engine 900 rpm vibration (acceleration, and velocity desplacemen) is high, if the rpm increase up to 1244 rpm so engine vibration can be down, it indicate the engine in normal conditions. The higher of rpm can be cause the content of CO in exhaust emission. At 900 rpm the engine due to higher CO in exhaust emission and engine rpm to 1244 content of CO will decrease. So can make the content of NO and NOx can increase, it indicates the engine in normal condition so that not require maintenance and repair.   Keywords: Maintenance, repair, diesel engine, exhaust emissions, vibration
METODE PELAKSANAAN PEKERJAAN PEMBANGUNAN KAPAL IKAN 30 GT Bambang Antoko
Jurnal Kelautan Vol 11, No 1 (2018)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v11i1.2780

Abstract

Mata pencaharian wilayah pesisir masyarakat Indonesia sebagai besar nelayan, memerlukan kapal dan peralatan penangkap ikan yang cukup memadai. Untuk itu perlu dilakukan pengembangan teknologi metode pelaksanaan pembangunan pada kapal penangkap ikan yang murah, terukur dan modern. Sehingga dikembangkan kapal penangkap ikan dengan kapasitas 30 GT dengan bahan fiberglass yang dapat dikembangkan dalam proses fabrikasi dengan teknik fabrikasi yang terencana. Dalam proses pembangunan bahan fiberglass memiliki kemudahan dalam proses pembentukan lambung dan proses penyambungan bagian-bagian kapal penangkap ikan yang akan dikembangkan tersebut. Metode yang digunakan dalam kegiatan pembangunan kapal akan mengacu kepada system dan prosedur tata laksana pembangunan fisik kapal fiberglass, sesuai dengan struktur konstruksi maupun laminate schedule fibreglass yang dikerjakan secara seksama sehingga glass content mencapai kisaran 30-35%, sesuai dengan standard marine.ABSTRACTThe livelihoods of the coastal areas of the Indonesian people as large fishermen need adequate fishing vessels and fishing equipment. For this reason, it is necessary to develop technology for the implementation of development methods on cheap, measurable and modern fishing vessels. So that a fishing vessel with a capacity of 30 GT was developed with fiberglass material that could be developed in the fabrication process with planned fabrication techniques. In the process of building fiberglass material has the ease of the process of forming the hull and the process of connecting parts of the fishing vessel to be developed. The method used in ship building activities will refer to the system and procedures for the physical construction of fiberglass boats, in accordance with the structure of the construction and fiberglass laminate schedule which is done carefully so that glass content reaches the range of 30-35%, in accordance with marine standards.Keywords: development, fiberglass ship, marine standard
PELATIHAN PERAWATAN DAN PERBAIKAN MESIN POMPA AIR SAWAH UNTUK MENINGKATKAN PRODUKSI PERTANIAN DI DESA GLAGAHAN KECAMATAN PERAK JOMBANG Sudiyono Sudiyono; Urip Mudjiono; Hendro Agus Widodo; Bambang Antoko
Jurnal Cakrawala Maritim Vol 1 No 2 (2018): Jurnal Cakrawala Maritim
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M) - PPNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cakrawalamaritim.v1i2.899

Abstract

Pelatihan
Studi Pengaruh Variasi Resin terhadap Laju Korosi pada Material FRP Novitrie, Nora Amelia; Alvido Toto Wijaya; Bambang Antoko
Journal of Research and Technology Vol. 6 No. 2 (2020): JRT Volume 6 No 2 Des 2020
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v6i2.343

Abstract

Pipes in the oil and gas industry use carbon steel which contains a corrosive fluid with fluctuating acidity. This condition causes the corrosion resistance of the pipe to decrease so that other materials that are more resistant to corrosive conditions are needed, for example Fiberglass Reinforced Plastic (FRP). FRP is a composite material made of resin which is then formed into pipes. In this study, trials were carried out on polyester resin, silicon rubber resin and epoxy resin to determine the value of their corrosion rate. The level of resistance of a material to corrosion generally has a corrosion rate value between 0.025 - 5.08 mmpy. The method used is the immersion test of the specimen using the ASTM G31 - 72 standard.The results obtained from this experiment are that polyester has the lowest corrosion rate than epoxy and silicon rubber and polyester resin with a fiber composition of 40% and fiber position 40° has a corrosion rate of 0.566 mmpy so that it meets the level of resistance of a material to corrosion.  
Perancangan Ballast Piping System Pada Kapal Ro-Ro Passanger 146 M Ikrom Tri Mahdi; Bambang Antoko; Ekky Nur Budiyanto
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2607

Abstract

The way ballast system works in general is to fill the ballast tank located at double bottom with seawater taken from the sea chest. The sea water is sucked up by ballast pump through main pipeline and branch pipes. In addition there is a valve that functions as opening and closing of the flow, and the overboard as a drain which is above the ship's draft. On this ship, the function of a cargo ship is changed to a passenger ship. Because there was a change in the equipment in engine room, it required a re-design of the ballast system. The design of this system follows the recommendations from BKI 2022 Volume III of the Machinery Installation Regulations. The design of the ballast system piping uses a ring main type, in the form of PID design and isometric design. The total length of pipe is 241 meters with details of 165,6 meters for the main pipe and 75,4 meters for the branch pipe. Using the type of galvanized steel material with ASTM A795 standards. The nominal diameter used of this system is based on calculations, namely 250 mm for the main pipe and 90 mm for the branch pipe.
Perencanaan Main Engine dan Propeller pada Kapal Pencalang 15 GT Rama Kurniadhani Atmaja; Abdul Gafur; Bambang Antoko
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2630

Abstract

Planning for the selection of the propulsion system on the Pencalang 15 GT ship is carriedout in order to avoid any errors in determining the main engine and propeller. Calculation ofresistance and ship engine power requirements is carried out using the Holtrop method in modelingsoftware to select the appropriate main engine. The propeller selection is carried out with theconsideration that it does not exceed the maximum diameter limit and the propeller does notexperience cavitation. Matching points are carried out by plotting engine power, engine speed andpropeller load characteristics in trial and service conditions with the highest percentage of matchingpoint values.
ANALISIS OPTIMALISASI NILAI THRUST, TORQUE DAN EFFICIENCY PROPELLER B SERIES DAN KAPLAN SERIES PADA STUDI KASUS KAPAL PENCALANG 15 GT MENGGUNAKAN METODE CFD Muhammad Iqbal; Abdul Gafur; Bambang Antoko
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2640

Abstract

Pencalang is a traditional sailing ship used as a merchant ship. Along with the times,Pencalang changed its function to become a patrol boat with the addition of a motor as its drivingforce. In the traditional wooden ship revitalization project, propeller selection is important because theship uses a sail and motor system. This research analyzes the use of Kaplan propeller types to optimizethrust, torque, and efficiency where currently the propeller used for Pencalang ships is type B-series.The selection of the Kaplan propeller to be analyzed is based on the diameter that matches theavailability of propeller space on the propeller ship or < Dpropeller B-series g. The selection of kaplanpropellers resulted in kaplan types K4-55 and K4-70 with diameters of 0.659 and 0.619, respectively.The B-series and kaplan series propellers that have been selected are then analyzed using modelingsoftware and simulation software that has calculated its error using MAPE with the result of an error< 10%. The simulation results in the software show that the Kaplan series propeller can be used as anoption for the type of propeller that can be used on Pencalang if a propeller replacement will be carriedout later, because with a smaller diameter compared to the B-series propeller it will produce greaterthrust and torque. The Kaplan series propeller that produces the highest thrust and torque is K4-70with a maximum thrust value of 6966.76 N and a maximum torque of 978.977 Nm.