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All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin
I.M. Mara
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Aerospace Engineering Automotive Engineering Mechanical Engineering Physics

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Analisis emisi gas buang dan daya sepeda motor pada volume silinder diperkecil I.M. Mara; I.M.A. Sayoga; I.G.N.K. Yudhyadi; I.M. Nuarsa
Dinamika Teknik Mesin Vol 8, No 1 (2018): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (379.519 KB) | DOI: 10.29303/dtm.v8i1.154

Abstract

This research aims to determine the effect of variations diameter pistons on exhaust emissions and fuel consumption. This research used a gasoline engine single-cylinder four-stroke  with variations in cylinder volume 100 cc, 90 cc, 60 cc and engine rotation  1500 rpm, 2500 rpm, 3500 rpm, 4500 rpm, 6000 rpm. Data was collected in transmission N, 1, 2, 3, and 4 each of the three repetitions for each round engine rotation, using a gas analyzer 2400 ultra 4/5 IM Hanatech brand for exhaust emission of CO and HC. Based on data analysis, it can be concluded that with decreasing diameter of piston up to 60 cc can reduce exhaust emissions, especially CO, HC and fuel consumption. The highest HC exhaust emissions was in 100 cc cylinder volume that is equal to 514.33 ppm while the lowest HC emissions obtained in 60 cc cylinder volume at 49.67 ppm. The highest CO emission was obtained on 100 cc cylinder  by 4.64% volume, while the lowest CO emission was obtained on 60 cc cylinder by 0.31% volume. The highest CO2 emissions obtained in 60 cc cylinder amounted to 17.60% volume, while the lowest CO2 emission obtained at 100 cc cylinder  amounted to 8.37%  volume, and the highest fuel consumption obtained in 100 cc cylinder  at 0.65 kg/h, and the lowest fuel consumption obtained in 60 cc cylinder  by 0.06 kg/h.
Analisis pengaruh profil sudu dan jumlah sudu terhadap unjuk kerja turbin angin poros horizontal pada daerah kecepatan angin rendah I.K. Wiratama; I.D.K. Okariawan; I.G.N.K Yudhyadi; I.M. Mara; A. Juliansah
Dinamika Teknik Mesin Vol 9, No 1 (2019): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (265.708 KB) | DOI: 10.29303/dtm.v9i1.266

Abstract

Wind Energy is one of the renewable energy sources, therefore utilizing wind energy during this time is very wide. Indonesia has enormous wind energy potential with wind speeds between 2 m/s to6 m/s, and especially in the Nusa Tenggara region can reach wind speeds> 5 m/s. To enable rising solar energy (10 kW) and (10-100 kW).This research was conducted to obtain the performance characteristics of horizontal axle wind turbine with variation of blade profile and number of different blades in each test. Wind source is obtained with the help of wind power 7 m/s wind speed. The shape of the blade that is used there are four variations of the big taper, half thin small, half tapered and small taper. The test is also carried out with variations of the blade amounts of 3, 4, 5 and 6.The results are shown in the graph of the number of blades against the rotation of the rotor, the amount of the blade to the rotor rotation after braking, the amount of the blade to the rotor power, the amount of the blade to the torque, the amount of the blade to the cpR and the amount of the blade against the Speed Ratio Tip (TSR). The maximum rotor rotation speed is generated on the form of a large tapered blade with an amount of 3 blades of 865.76 rpm. The maximum rotor and torque power is generated on the form of a large tapered blade with an amount of 4 blades which is 182.01 Watt and 3.25 Nm. Maximum CpR is produced on the form of a large tapered blade with an amount of 4 blades which is 0.48 as a result of TSR of 8.69. So of all variations done, the best result results on a large tapered blade with 4 blades
Co-Authors A. Juliansah I.D.K. Okariawan I.G.N.K Yudhyadi I.G.N.K. Yudhyadi I.K. Wiratama I.M. Nuarsa I.M.A. Sayoga