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All Journal Logic : Jurnal Rancang Bangun dan Teknologi JAMETECH Logic : Jurnal Rancang Bangun Dan Teknologi
I Ketut Adi
Politeknik Negeri Bali
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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PENGARUH PENGGUNAAN RESIRKULATOR GAS BUANG PADA KNALPOT STANDAR, TERHADAP PERFORMA MESIN SEPEDA MOTOR YAMAHA MIO J I Ketut Adi; I Nyoman Budiarthana
Logic : Jurnal Rancang Bangun dan Teknologi Vol 17 No 1 (2017): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.875 KB)

Abstract

Rekayasa teknologi berupa EGR(Exhaust Gas Recirculation) telah menunjukkan dampak positif dalam penurunan gas NOx dalam emisi gas buang, karena adanya penurunan temperatur pembakaran yang terlalu tinggi, karena gas buang turut bercampur dengan gas baru yang secara bersamaan dibakar di dalam ruang bakar mesin. Pada penelitian ini, gas buang tidak dimasukkan ke dalam ruang bakar, tetapi hanya dengan menggunakan metode resirkulasi gas buang di sepanjang saluran gas buang. Kegiatan penelitian ini menunjukkan adanya peningkatan performa mesin berupa torsi dan daya mesin masing masing sebesar 3,7 % dan 10%, bila dibandingkan dengan mesin yang tidak menggunakan Resirkulator Gas Buang.
Redesign and Improvement of Pottery Spinner to Increase Worker Producivity I Made Agus Putrawan; I Gede Santosa; Ketut Adi
Logic : Jurnal Rancang Bangun dan Teknologi Vol 20 No 2 (2020): July
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v20i2.1845

Abstract

Many small industries produce handicrafts related to art in Bali, one of which is pottery. Pottery is an object made of clay which is formed and then burned to be a unique shape such as: jugs, glassware, cauldron, brazier, piggy bank, and other objects. The process of producing pottery required the complex steps, from preparing clay, printing by turning, drying and burning. The main difficulty of pottery producers is in the process of forming shapes which involved the rotating spinner. Most of small industries still use the manual spin control to rotate clay bucket holder. This research aims to re-design of a rotating spin machine from the existing pottery industries to increase the productivity. The sample was overtaken from 12 craftsmen in Singakerta Village, District of Ubud Gianyar, Bali. Sample P0 was given to craftsmen is still used the old design and P1 was given to sample modified and re-designed the old machine with added automatic control of rotating spinner. Workload is calculated based on the worker's pulse rate which is measured using a pulse meter. Research data were analyzed using descriptive and inferential statistics. T-test method was performed to analyzing the differences range between groups P0 and P1 at significance level of 5%. The results showed a workload was decreased from heavy to moderate by 12.09%. Production rate was increased by 282.1%, and productivity increased by 334.6%
Analisis modifikasi sistem kopling otomatis ke sistem kopling manual terhadap akselerasi sepeda motor Supra-X tahun 2014 I Nyoman Sutarna; I Nengah Ludra Antara; I Ketut Suherman; I Ketut Adi
Journal of Applied Mechanical Engineering and Green Technology Vol. 3 No. 1 (2022): March 2022
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.872 KB) | DOI: 10.31940/jametech.v3i1.13-17

Abstract

Acceleration is the change in speed in a certain unit of time. The method applied in this research is the experimental method. The purpose of the analysis of the modification of the automatic clutch system to the manual clutch system on motorcycle acceleration is to determine the results of the modification of the automatic clutch system to the manual clutch system on acceleration. The results of the first test showed that the average acceleration in the automatic clutch system was 101.05 m/s2, and the second an average acceleration was 101.14 m/s2, so the average acceleration was 101.095 m/s2. When using the manual clutch system, the first test results obtained an average acceleration of 77.87 m/s2, the second obtained an average acceleration of 78.51, so the average acceleration was 78.19 m/s2. So the average acceleration using the automatic clutch system is 101,095 m/s2, while those using the manual clutch system are 78.19 m/s2. There was a very significant difference of 101.095 m/s2 - 78.19 m/s2 = 22,905 or 22.65%. This means the use of the manual clutch system accelerates faster than the automatic clutch system.
Analysis of the Selection and Installation of a Pump for an Overflow Swimming Pool with a Volume of 67 Cubic Meters Achmad Wibolo; I Ketut Suherman; I Dewa Made Pancarana; I Ketut Adi
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 23 No. 2 (2023): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v23i2.138-146

Abstract

In the swimming pool there is a pump system that is useful for circulating water. Pumps  in  swimming pools can affect water quality. Dirty  water will be cleaned by the  filter  and  will  be re-circulated to the swimming pool. The calculations  that  must  be  known  are  the  volume  of  the swimming  pool,  pump  power, flow rate, and the curve of  the pump. In  order  for  the  selection of a swimming  pool pump  to be  appropriate, the  correct  calculation  must  be made  so that the pump  can provide  the best  performance for a swimming pool with a volume of 67 cubic meters  and is able to circulate swimming pool water 4 times  during 12 working hours.
Analysis of the Selection and Installation of a Pump for an Overflow Swimming Pool with a Volume of 67 Cubic Meters Achmad Wibolo; I Ketut Suherman; I Dewa Made Pancarana; I Ketut Adi
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 23 No. 2 (2023): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v23i2.138-146

Abstract

In the swimming pool there is a pump system that is useful for circulating water. Pumps  in  swimming pools can affect water quality. Dirty  water will be cleaned by the  filter  and  will  be re-circulated to the swimming pool. The calculations  that  must  be  known  are  the  volume  of  the swimming  pool,  pump  power, flow rate, and the curve of  the pump. In  order  for  the  selection of a swimming  pool pump  to be  appropriate, the  correct  calculation  must  be made  so that the pump  can provide  the best  performance for a swimming pool with a volume of 67 cubic meters  and is able to circulate swimming pool water 4 times  during 12 working hours.
Co-Authors Achmad Wibolo I Dewa Made Pancarana I Gede Santosa I Ketut Suherman I Ketut Suherman I Made Agus Putrawan I Nengah Ludra Antara I Nyoman Budiarthana I Nyoman Sutarna