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PRESTASI MOTOR DIESEL DENGAN OPTIMALISASI SISTEM INTAKE MANIFOLD PAK SYS (PERFORMANCE AIR INTAKE SYSTEM) TURBO FAN AXIAL
Get PDFThe development of motor vehicle technology has urgency of increasing the efficiency for the engine of fuel requirements that will be used in the combustion process to produce output parameters. One of the elements for an effective combustion process for the fuel mixture composition is the quantity and the air capacity to be supplied for each cylinder. The construction of intake manifold is one of minor losses for requirement capacity of air when intake suction take occured. The addition of Axial Fan in the intake manifold system of diesel motors is expected to meet the air supply capacity and minimize minor losses, so the performance engine like : volumetric efficiency, torque and power increased. Fundamental of air Intake System Performance Method to inducting (forces) amount of the air through Fan Axial Double Blade blades. This study uses a quasi-experimental method that compares the intake manifold with or without the installation of axial (standard) fan to the torque and power generated from four diesel motors (4) steps. From the test obtained an average torque increase of 22%, with the highest torque at the beginning of 1150 rpm engine speed of 41.8 Nm, while the average power increase of 13% with a power rating of 8 KW at 2200 rpm engine speed. While the volumetric efficiency experienced an average increase of 6% with a significant percentage of engine speed of 2200 rpm which reached 98.8%.
Keywords: Torque, Power, Diesel, Intake Manifold, Axial Fa
PERFORMA GENERATOR HHO DALAM SISTEM BI-FUEL PADA SEPEDA MOTOR SEBAGAI BAHAN BAKAR ALTERNATIF
Get PDFThe increasing of vehicle uses will make the increasing in fuels consumption. In the other hand, the reserves of fossil fuels as a fuel in vehicles are always decreasing. In order to anticipate the lack of fossil fuels, there is some alternatives energy that has to substitute the fossil fuels. One of the alternative energy is HHO Gas. HHO gas is a gas that was produced by the electrolysis of water. Water as an abundant material in earth can be an alternative energy that replace or substitute fossil fuel. In this research, HHO gas will be used as a supplement in fuels. So the vehicles use two fuels (bi-fuel. )The aim of this research is to analyze the performance of uses HHO gas in vehicles. The HHO gas will be produced by different water, such as aquadest, land water, sea water. The performance analysis was focused in the fuel consumption and the efficiency of thermal engine oil. The analysis result shows that the addicted HHO gas can make the efficiency of fuel consumption better. The highest efficiency fuel consumption is in the fuel with HHO gas from aquadest (19.95%). But the best efficiency in thermal engine oil is in HHO gas from sea water (0.84 oC).
Keywords: HHO, performance, engine, bifue
PENGARUH BASIC SEDIMENT AND WATER TERHADAP LAJU KOROSI PIPA X52 DAN A53 PADA MEDIA OIL SLUDGE.
Get PDFThis research have a purpuse to know corrosion rate in pipe X52 and A53 at oil sludge media caused BS and W. Corrosion is a damage of metal that occurs because reaction between metal with environtment and produce unwanted of corrosion product. Pipe X52 and A53 is a type of low carbon steel that use for fluid transportation system in industry. Oil sludge is a sediment of crude oil from main gathering storage and containing variouses elements. Oil sludge have a one of element is Basic Sediment and Water that is can make corrosion happen to distribution pipes. Measuring Method used in this research is weight loss method. The result of corrosion rate in Oil Sludge media containing 30,17% BS and W for pipe A53 is 1,64 x 10-2 mmpy and the result for pipa X52 is 2,47 x 10-2 mmpy. The result of corrosion rate in Oil Sludge media containing 60,67% BS and W for pipe A53 is 2,12 x 10-2 mmpy and for pipe X52 the result is 3,13 x 10-2 mmpy. The result of this research showed pipe A53 have more resistance than pipe X52. The corrosion is classified as uniform corrosion.
Keywords : A53, Weight Loss, Oil Sludge, X52
DESAIN PENGEMBANGAN UNIT PENGOLAHAN LIMBAH PLASTIK PADA KELOMPOK PEMULUNG DI KOTA MALANG
Get PDFTypes of waste issued by industries and communities are organic and non-organic. Non-organic waste can not decompose naturally but it needs human effort to process it by recycling, one of which is plastic waste. The method is the identification and formulation of problems in landfills / TPS and scavengers, then determined the purpose of the study. By literature study and field study can be concluded that the concept of a suitable problem solving is the method of Quality Function Deployment (QFD). Implementation of QFD in this study to determine the scavengers desire in improving the economic level, by distributing questionnaires to scavengers in Malang. The conclusion of this research is that scavengers want to increase their economic level by adding value to plastic waste. The value added criterion in this research is the increase of plastic waste price from ± Rp 6.000,00 / kg to ± Rp 12.000,00 / kg in the form of chopped. Design of product development of plastic waste cutter machine desired by the user / scavengers at an affordable price of 84.33% and in terms of capacity 72.33%, is a machine with a price of Rp 5,500,000.00 and a capacity of 10 kg / hour.
Keywords: Plastic Waste, Scavengers, Economic Level, Affordable price, Capacit
RANCANG BANGUN KONTROL PID PADA SPEED OBSERVER GENERATOR DC BERBASIS ARDUINO UNO
Get PDFIn this study discusses the development of observer to the generator speed direct current (DC) that is controlled using the rotary encoder sensor built using the Arduino UNO with recording capability of the two systems is also compared. Testing is done to see readings observer error indicates that the observer is sufficient with an average error of 0.81% of the speed sensor readings in this case be used as a standard. Application of PID control as the control of the speed observer DC generators that keep the generator speed setpoint despite the load current increases. Referring to the curve of speed and power relations in the prime mover speed setpoint is to improve the reliability and performance of the DC generator. PID control makes speed generator is stable at voltage setpoint. PID parameters used are Kp = 0.77, Ki = 0.0083 and Kd = 0.0096. After applying PID control value obtained rise time of 0.51 s, the steady-state error 1:28%. Testing is done by giving a resistive load to the setpoint speed of 1500 rpm, 2000 rpm and 3000 rpm and load variations that are used 50 Ω and 25 Ω. For steady-state error value obtained supreme 17:21% when the setpoint of 3000 rpm and the lowest was 0.004% at 2000 rpm setpoint. The highest value of recovery time on a setpoint of 3000 rpm that can not be returned to the setpoint and the lowest was 0.6 s current setpoint 1500 rpm.
Keywords: Arduino Uno R3, DC Generator, PID, Speed Observe
KARAKTERISTIK KECEPATAN NYALA DAN KONSENTRASI ION PADA PEMBAKARAN PREMIXED BUTANA
Get PDFResearch on premixed butane combustion has been carried out, to determine the characteristics of flame velocity and ion concentration. The research was carried out by combining premixed butane mixture in a cylindrical combustion chamber measuring 108 mm in diameter and 170 mm in length. The premixed butane air mixture is set at the equivalent composition ratio ïª = 0.8; 0.9; 1.0; 1.1; 1,2. The results showed that the highest flame speed was equivalent to a ratio of 1.1, which was 198 cm / s whereas the highest radical concentration indicated by the voltage on the ion sensor system is equivalent to a ratio of 1.1, which is 5.5 volts.
Keywords: butane, flame velocity, radical concentration, premixed combustio
PENGGUNAAN METODE KOMPUTERISASI DALAM PENENTUAN TAHANAN KAPAL TANKER
Get PDFThe ship resistance is influential to choose the ship's main engine, especially tankers that have large block coefficients. In general, ship resistance was obtained by modeling the vessel on a certain scale and then testing on the experimental tank. However, this test requires high funding, because testing requires special places such as towing tanks that have expensive operating costs. This research is intended to get ship prisoner with computerized method for tanker ship. Then the result is validated by Holtrop mathematical approximation method. The result of computerized method for speed 11.4 knots got the value of ship resistance is 86.2 KN. While the method of mathematical approach generated ship resistance is 74.38 KN. So the ship's resistance used to determine the tanker machine is 86.2 KN.
Keywords: Ship resistance, tanker, computerize
ANALISIS PENINGKATAN KUALITAS PRODUK Y DENGAN PENDEKATAN METODE SIX SIGMA
Get PDFTo meet the market needs a manufacturing industry is required to continue to improve the quality of production through improvements in the production process. One way that can be used is the analysis of quality improvement with Six Sigma methods. This research aim to reduce the number of defects that can increase the value of sigma production. Based on the analysis results obtained sigma value of its current production of 3.42 with DPMO value 27429. The final result may boost the improvement recommendations sigma value to 3.50 and decrease the number of defects from 54.94 grams to 45.5 grams
ANALISA TRANSPORTASI PALM OIL MILL EFFLUENT DARI PABRIK KELAPA SAWIT KE PEMBANGKIT LISTRIK TENAGA BIOGAS DI RIAU
Get PDFThe delivery of Palm Oil Mill Effluent (POME) by the Palm Oil Mill (POM) of Tanah Putih (60,000 tons / year) and POM Sei Buatan (30,000 tons / year) through the river ship represents 78% of POME's total supply requirement for Biogas Power Plant (BPP) Tandun, Riau. How to get recommendations on routes, ship types and most optimum ship sizes is important. The optimization is done by analyzing the transportation including the investment and then comparison between the modes with some alternative routes on the existing segment, the actual condition limitation and the minimum criterion of total cost. The result of analysis shows that for POME delivery the optimum route is port to port using 1 unit of SPOB vessel with 1,500 ton capacity for each segment. The optimum ship type is Self Propelled Oil Barge (SPOB) when compared to Self Propelled Container Barge (SPCB) and Landing Craft Tank (LCT) and Tank Truck with 8 ton capacity. The total cost for ship procurement is Rp 8,035 billion. The amount of POME delivered can generate 9 million kWh of electrical power. Total revenues from electricity sales and electricity cost savings of the factory amounted to Rp 8.774 billion, resulting in a gross profit of Rp 739 million
Keywords: Transportation Analysis, Palm Oil Mill Effluent, Biogas Power Plan
ORIENTASI SUDUT LILITAN BENANG KATUN TERHADAP KEKUATAN TARIK PADA PIPA KOMPOSIT FILAMENT WINDING
Get PDFCotton fibers currently use in many industries textiles, easy gotten in the market, and a cheap price. Using of fiber would be able to solve the environtment problems, reduce the metal using, particularly in the oil and gas industries. In this study, composite pipes are made by cotton fibers as reinforcement, particles of montmorillonite as filler, and unsaturated polyester as matrix. From that consideration this study was conducted to obtain that analysis of tensile strength composite cotton fibers. With the pattern of variation woven fiber direction angle towards the corner fibers 450, 550, 650, 750, and 850. From the test results the highest tensile strength values is obtained by a composite pipe with fiber direction angle of 850. The test results showed that the tensile strength of the cotton fiber reinforced composite pipe with direction of 450 angle fiber is 3.76 MPa, for direction of 550 angle fiber tensile strength is 1.28 MPa, for direction of 650 angle fiber tensile strength is 10.691 Mpa, for direction of 750 angle fiber tensile strength is 14.465 Mpa, and for direction of 850 angle fiber tensile strength 28.617 MPa.
Keywords: Cotton fiber, unsaturated polyester, filament winding method, montmorillonite, Tensile Strengt