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All Journal Media Perspektif Eksergi: Jurnal Teknik Energi
Abdul Muis
Politeknik Negeri Samarinda
Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Analisa Kerusakan Alternator Pada Engine C6.4 Excavator 320D Caterpillar Abdul Muis; Mangkona Mangkona; Darma Aviva; Faisyal Faisyal
MEDIA PERSPEKTIF : Journal of Technology Vol 13, No 1 (2021): MEDIA PERSPEKTIF
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1655.596 KB) | DOI: 10.46964/jtmp.v13i1.1350

Abstract

The alternator plays an important role in supplying the battery, lighting accessories and turning on the unit at the time of starting, therefore it needs more attention to it. Damage can occur at any time, and finding the problem with it presents its own challenges. Equipment such as a multimeter/avometer is needed to analyze the damage. Visual inspection, testing, and measurement are steps that must be taken to be able to find damage that occurs in the alternator. The charging system can be disrupted if there is an operational problem with the alternator component. This can be identified through an examination of the damage that occurred. Maintenance/maintenance on the components of the charging system must be carried out periodically so that the electricity supply remains optimal.
Perancangan Simulator Differential Konvensional Menggunakan Penggerak Motor Listrik Abdul Muis; Abdul Halik; Mangkona Mangkona; Abdul Halim; Hidayat Hidayat
MEDIA PERSPEKTIF : Journal of Technology Vol 13, No 1 (2021): MEDIA PERSPEKTIF
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (622.103 KB) | DOI: 10.46964/jtmp.v13i1.1342

Abstract

Design and manufacture of this simulator aims to explain how the movement of the differential components. The components of this differential simulation consist of a differential case, pinion gear or spider gear, side gear, spider shaft, electric motor, pulley, v-belt and dimmer (motor speed controller). The method used in making this simulator is to start by first making a simulator design and then continuing with the collection of tools and materials needed. From testing the components of the simulator tool which was carried out for 50 minutes, it was found that every 10 minutes the temperature increased due to the lubrication system that was not maximized. Tests to determine the correlation between the dimmer and the RPM of the electric motor, it was found that any decrease in the resistance value will result in an increase in the RPM value of the electric motor. These results also show that the maximum value of the motor RPM after being assembled is 1435 RPM. Then the test when given a load found that the shaft axle rotation speed of the differential will change if there is a load on one side. From this test, it can be seen that there is an increase in the RPM value on the side of the shaft axle which rotates freely when the other shaft is given a load. With this simulator, it can also provide an overview of how the movement of the differential gears contained in the axle of a unit vehicle so that you can understand how it works
Effect of HCl-Activated Natural Zeolite Catalyst Loading on Liquid Fuel Production from Waste Engine Oil Pyrolysis Noversi Allolayuk; Alwatan Sofian; Marcopolo Ginting; Sirajuddin Sirajuddin; Muhammad Irwan; Harjanto Harjanto; Ramli Thahir; Abdul Muis; Muhammad Taufik; Abdul Halim
Eksergi Vol. 22 No. 03 (2026): SEPTEMBER 2026
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v22i03.7673

Abstract

The continuous increase in motor vehicle usage has led to a corresponding rise in lubricant oil consumption, resulting in a greater volume of used lubricating oil waste. Various treatment methods can be applied to process used lubricating oil waste, one of which is pyrolysis to convert the waste into liquid fuel. This study was conducted to determine the effect of activated natural zeolite as a catalyst in the conversion of used lubricating oil into liquid fuel. The used lubricating oil was subjected to pyrolysis for 120 minutes at a temperature of 350°C, using a feed volume of 500 mL. Catalyst weight variations of 0 g, 21.5 g, 43 g, 64.5 g, and 86 g were applied. The catalyst consisted of natural zeolite crushed and sieved to 100 mesh particle size. Prior to use, the zeolite was activated using 3 M HCl. The resulting liquid fuel products were evaluated in terms of yield percentage (%Yield), API gravity (°API), density, viscosity, and GC–MS analysis. The pyrolysis process produced 287 mL, 332 mL, 387 mL, 441 mL, and 415 mL of liquid fuel, respectively. The maximum fuel yield was obtained with a catalyst weight of 64.5 g, producing 441 mL of liquid fuel with a yield of 88.2%, a density of 812.2 kg/m³, a viscosity of 2.48 cSt, and an API gravity of 42.56°. The API gravity value indicates that the liquid fuel product can be classified as kerosene.
Co-Authors Abdul Halik Abdul Halim Alwatan Sofian Darma Aviva Faisyal Harjanto Harjanto Hidayat Hidayat Mangkona Mangkona Marcopolo Ginting Muh. Irwan MUhammad Taufik Noversi Allolayuk Ramli Thahir Sirajuddin Sirajuddin