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Anwar Ilmar Ramadhan
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Journal of Applied Sciences and Advanced Technology
Published by Universitas Muhammadiyah Jakarta
ISSN : -     EISSN : 26226553     DOI : 10.24853/jasat
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering
Journal of Applied Sciences and Advanced Technology (JASAT) is an international peer-reviewed journal dedicated to interchange for the results of high quality research in all aspect of applied sciences, advanced technology. The journal publishes state-of-art papers in fundamental theory, experiments and simulation, as well as applications, with a systematic proposed method, sufficient review on previous works, expanded discussion and concise conclusion. As our commitment to the advancement of science and technology, the JASAT follows the open access policy that allows the published articles freely available online without any subscription.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 1, No 2 (2018): Journal of Applied Sciences and Advanced Technology" : 5 Documents clear
Designing Special Tool Remove and Install Hoist Cylinder On Unit Dump Truck HD 1500-7 Rasma Rasma; Hendro Purwono
Journal of Applied Sciences and Advanced Technology Vol 1, No 2 (2018): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.576 KB) | DOI: 10.24853/jasat.1.2.59-62

Abstract

Hoist Cylinder is an important component of the Dump Truck HD 1500-7 unit that serves as a support for the vessel during loading and unloading. Leakage due to the loss of dust seal that is unable to block the dirt and lubricating oil, is one of the reasons for the replacement of the hoist cylinder. The solution of the leak is to replace the hoist cylinder, but the difficulty of removing and install hoist cylinder process causes the lead time to become longer and the percentage of non-operating units (down time) increases. This is because of the drop of the rod hoist cylinder and the narrowing of the work of removing and installing. To lift and prevent the release of mechanical rod cylinders, it is necessary to tie the cylinder rod by using the belt. But the method is dangerous and ineffective because of repositioning belt due to difficult position. Therefore, tool is made to lift the rod cylinder so as not to extend, so it can speed up the process of removing and installing and reducing the percentage of non-operating units (down time), as well as providing benefits in terms of save cost of man power and lead time, and in terms of save cost loss production.
Comparison Thermal Efficiency and Fuel Consumption of Electric Supercharger Variations For Otto Engine E70 Endah Purwanti; Rosid Rosid; Sonny Faizal
Journal of Applied Sciences and Advanced Technology Vol 1, No 2 (2018): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.403 KB) | DOI: 10.24853/jasat.1.2.63-68

Abstract

A Pressure Wave Supercharger (PWS) is a technical way to increase the incoming pressure on a diesel engine. PWS utilizes hot cylinder exhaust gas energy to build in air pressure such as conventional turbo filling. In normal combustion the air and fuel mixture will burn perfectly if a stoichiometric mixture, gasoline fuel can be said to be stoichiometric if to burn 1 kg of fuel requires 14.7 kg of air. While the engine rotation is high, it requires a lot of fuel while the intake air is limited in number. Based on this description, an examination of air intake into the intake manifold is required with an Electric Supercharger which functions as an air compressor. Using the Otto engine with modifications to the piston, compression ratio, ignition timing, injection duration and E70% bioethanol fuel. With the installation of these tools, can get the characteristics of combustion and improve the problems that occur associated with a rich mixture so that the engine performance becomes optimal and exhaust emissions become minimal. The result of variations in Electric Supercharger voltage at 6 volts, 8 volts and 10 volts can be seen that the best performance such as bmep, thermal efficiency has increased respectively by 14.73%, 22.87%, and sfc has decreased by 23, 84%.
Analysis and Implementation of Backup Line Network Using Branch Office VPN and Speedy Internet Broadband Kotim Subandi; Adriana Sari Aryani
Journal of Applied Sciences and Advanced Technology Vol 1, No 2 (2018): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (798.71 KB) | DOI: 10.24853/jasat.1.2.39-48

Abstract

The purpose of this research is to build computer network infrastructure that connects between head office and branch office (Site), so that all network connection performance can be upgraded to help and support the company's business objectives. In order for these needs can be met well and can overcome the problems of technology failure when communication and information exchange is underway, the technology will be used is a connection that can always be online with the aim that quality in service approaching 100% (service excellent). Network Infrastructure to be implemented is to use two lines of connection, the first is to use Telkom Metro Ethernet, and the second connection Branch Office VPN by using internet line broadband speedy from Telkom, if one of the connection down then the other connection as a backup, and if both connections are in stable and good condition, it can be ascertained both connections can serve conveying data simultaneously. Which is used to set the two connections in the topology holder built head office with Head Office(Site)is Cisco Router
Design of Infiltration Well to Reduce Inundation in Rawa Makmur Village, Bengkulu City Meilani Belladona; Narlis Nasir; Endri Agustomi
Journal of Applied Sciences and Advanced Technology Vol 1, No 2 (2018): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (629.523 KB) | DOI: 10.24853/jasat.1.2.53-58

Abstract

Rawa Makmur Village, especially Merpati I, has an area of 3.6 hectares, has experienced land use changes of 30% in the last 3 years. The purpose of this study is to design infiltration wells to reduce inundation that often occurs in this region. The data used are primary data (soil sampling and laboratory testing) and secondary data (rainfall data, land use data and other supporting data) that are processed using hydrological analysis and hydraulic analysis. Based on the results of data processing obtained the intensity of rainfall with a 20-year return period is 2.56 mm/hour and the flood discharge plan is 0.01229 m3/s. The household debit is 0.212 m3/s, the roof discharge is 0.00000037 m3/s, so the total debit that must be reduced is 0.222 m3/s. The soil sample at the study location is taken and tested in the laboratory. The test results show the soil permeability coefficient is 2.630 x 10-4 m3/s. Infiltration discharge into the soil is 0.000152 m3/s, then the reduced discharge is 0.2218 m3/s. Based on the analysis results obtained the design of infiltration wells with a diameter of 1 meter and a depth of 2.2 meters. One well was effectively used for 2 houses with a reduction of 0.2218 m3/s with a reduction time of 1,297 minutes.
Analysis Structure and Function Cooling System on Unit D155A-6 Hasan Basri; Anwar Ilmar Ramadhan; Ery Diniardi
Journal of Applied Sciences and Advanced Technology Vol 1, No 2 (2018): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (989.815 KB) | DOI: 10.24853/jasat.1.2.49-52

Abstract

As time went on many problems were encountered in the unit, one of which was the problem experienced by the D155A-6 unit, which was overheating troubleshooting caused by abnormal fan motors. In handling the problem, it is difficult to determine the data of the motor fan. Therefore, an initiative is needed to create tools to help deal with problems that occur. The purpose of this study is the manufacture of adapter tools for measurement of hydraulic pressure fan motors in troubleshooting the overheat engine in D155A-6 units. The results of this study are analyzing the structure and function of the cooling system in troubleshooting the overheat engine in the D155A-6 unit.

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