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All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin
I.M.A. Sayoga
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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.
Pengaruh waktu dan jarak electroplating nikel pada baja karbon rendah terhadap kekerasan permukaan S. Salman; I.M.A. Sayoga; I.D.K. Okariawan; S. Sinarep; R. Sutanto; A. Wiranata
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 (160.189 KB) | DOI: 10.29303/dtm.v9i1.251

Abstract

Electroplating is the process of coating an object with other metals that utilizes electricity in electrolyte liquid. In this research the carbon steel as anode material was coated by steel using nickel as catode.  The electroplating times and distances of anode catode were varied 6, 9, and 12 minutes and 150, 200, 250 mm. The hardness of the coated materal was evaluated later on by using micro vikers hardness testing. The result indicates that increasing the electroplating time rises the hardness values. The effect of the electroplating time on the harness is significant while the effect of the electrode distance is not.
Analisis penggunaan alat magnetisasi bahan bakar secara elektromagnetik terhadap unjuk kerja mesin empat langkah satu silinder I.M. Mara; I.W. Joniarta; I.B. Alit; I.M.A. Sayoga; I.M. Nuarsa
Dinamika Teknik Mesin Vol 8, No 2 (2018): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.494 KB) | DOI: 10.29303/dtm.v8i2.233

Abstract

The effort to increase fuel economy and to thrift the usage of fossil fuel is becoming main focus in the entire the world. One of those efforts is by using electromagnetic field in order to increase the quality of the combustion process and reducing fuel consumption.This research investigates the effect of the number of cooper wire winding on electromagnetic field on engine torque, engine power and fuel consumption of 100 cc four stroke single cylinder gasoline engine. The numbers of cooper wire windings are, 3000, 4000 and 4500. The engine performance was analyzed at several engine rotations. The result shows that there is an increase of engine power by 13% and on the other hand the fuel consumption reduced by 11% on 4000 windings at 6000 rpm.
Co-Authors A. Wiranata I Wayan Joniarta I.B. Alit I.D.K. Okariawan I.G.N.K. Yudhyadi I.M. Mara I.M. Mara I.M. Nuarsa R. Sutanto S. Salman S. Sinarep