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Lufti, Aryananta
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Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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ANALISIS PENGKONDISIAN UDARA AC TERHADAP BEBAN PENDINGIN PADA MOBIL DAIHATSU FEROSA Lufti, Aryananta; Harjanto, Budi; Suparyana
JURNAL MEKANIKASISTA Vol. 11 No. 1 (2023): NOVEMBER 2023
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i1.138

Abstract

There are components in a vehicle that are supporting components that are important in driving comfort that the air conditioning system components, air conditioning systems is something that appeals to the vehicle due to the kind of machine that works following the thermodynamic cycle. Air-conditioning or airconditioner in passenger cars, usually used to control the temperature of the moisture so the air remains fresh and clean. The main source affecting the cooling load is derived from direct solar radiation and also of the rider or passenger. The purpose of this planning design alone - the eye to provide a basis for estimating the thermal load in the vehicle cabin. From the calculation of the load, the cooling capacity can be calculated so as to enable us to know the size of the cooling load in need. The scope includes design planning of the outdoor heat load that includes loads of heat from sunlight through glass windows as well as loads of heat from sunlight through the walls or roof, while for the heat load of the room includes heat load of the occupants of the room. The amount of cooling load occurs in accordance with the geometric size of the car that is designed for 6 people was 3.66 kW. This burden is still able to be solved by setting the engine coolant, which for the overall heat that can be absorbed by the cabin was 5.26 kW.
PENGARUH PROSES QUENCHING DAN HEATTREATMENT PADA VELG BESI MOBIL TOYOTA KIJANG LGX HP, Bambang; Hafid, Achmad; Lufti, Aryananta
JURNAL MEKANIKASISTA Vol. 11 No. 1 (2023): NOVEMBER 2023
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i1.141

Abstract

Iron precious metals have been used since antiquity, although those with lower melting points, which were used earlier in human history, pure iron are relatively softer but cannot be obtained through smelting. This material hardens and is significantly strengthened by carbon impurities, especially in the smelting process. With a certain proportion of carbon (between 0.002% and 2.1%) it will produce harder steel than pure iron which may reach 1000 times. Iron compounds have many benefits in daily life. Iron has a very high economic value so many people make iron as a business land. Most of the usefulness of iron is in the world of construction. Many material elements are used in the world of iron-based construction because the strength of the modified iron is more beneficial and useful. This is because the cast properties of this alloy are classified as good, in addition to corrosion resistance and easy to process machines, alloy types this is widely used in the automotive industry object used is the LGX Toyota kijang alloy wheels. In this study, to obtain data, several tests were carried out, namely Heat Treatment, Quenching, Aneling, composition testing, and tensile testing. The results showed that the effect of heat treatment and quenching on iron alloy specimens was the increase in the value of hardness and tensile strength values, when compared with non-heat treatment specimens. While the strength of the pulses is not measurable because the specimens are too brittle .
ANALISA UJI PERBANDINGAN KEAUSAN KAMPAS REM CAKRAM ANTARA KAMPAS REM MITSUBISHI DENGAN KAMPAS REM INDOPART PADA KENDARAAN MITSUBISHI L 300 Wijanarko, Heri; Sugihandoko; Lufti, Aryananta
JURNAL MEKANIKASISTA Vol. 11 No. 2 (2024): MEI 2024
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i2.181

Abstract

To determine the quality of brake pads, this writing explains the method for assessing the quality of Mitsubishi and Indopart brake pads through three testing processes: Brinell hardness test, wear test, and material composition test. In the Brinell hardness test, data is obtained by creating specimens for each brake pad, and each specimen undergoes testing at 3 different points on the brake pad surface. The wear test follows a similar procedure to the hardness test, but the results are obtained using a wear testing machine. For the material composition test, the dominant elements present in the brake pads are determined using analytical chemical solutions. This allows identification of the dominant elements in both Mitsubishi and Indopart brake pads.
ANALISA PERBANDINGAN OLI MESRAN DAN OLI PRIMA XP TERHADAP LAJU KEAUSAN PISTON HONDA GL 125 Wijanarko, Heri; Sugihandoko; Lufti, Aryananta
JURNAL MEKANIKASISTA Vol. 12 No. 1 (2024): NOPEMBER 2024
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v12i1.238

Abstract

Analysis in this case the Indonesian Army as a national defense tool requires a strong vehicle in all fields. Especially in the vehicle engine requires a type of lubricant that suits the characteristics of the engine. So that the performance of the vehicle engine can be maximized. In addition, with the right lubricant, maintenance costs, equipment replacement costs can be more efficient and fuel consumption is more efficient. The piston is a part that always moves continuously, so that lubrication can reduce friction and reduce wear on the piston. With proper lubrication, the piston will be more durable. In this analysis, we try to find the best type of lubricant that is resistant to wear from friction. So that the type of lubricant that is suitable is obtained according to the characteristics of the engine. And knowing how resistant to wear.  
PERENCANAAN ULANG RODA GIGI PINION PADA GARDAN BELAKANG KENDARAAN ISUZU OZ Lufti, Aryananta; Santoso, Edy Budi; Nurtjahyono
JURNAL MEKANIKASISTA Vol. 13 No. 1 (2025): NOVEMBER 2025
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v13i1.389

Abstract

Gears are one of the essential machine elements that function to transmit power and rotation accurately from one shaft to another. In the transmission system of the Isuzu OZ vehicle, the pinion gear plays an important role as the main driver in transferring power from the engine to the rear-wheel drive system. Gears are preferred over other transmission systems due to several advantages, including a more compact system, simple construction, high load-carrying capacity, high power transmission efficiency, and minimal slip occurrence. One of the most commonly used gear types in vehicle transmission systems is the bevel gear, where the pitch surface is conical, with its apex located at the intersection point of the shaft axes. Based on the shape and direction of the teeth, bevel gears are classified into four types: straight bevel, zerol bevel, spiral bevel, and hypoid bevel gears. The hypoid type is a development of the spiral bevel gear, offering higher efficiency and the ability to transmit greater torque in heavy-duty vehicles. Therefore, the selection and design of the pinion gear play a crucial role in improving the efficiency, durability, and overall performance of the Isuzu OZ vehicle transmission system.
PERANCANGAN ULANG SISTEM SUSPENSI SHOCKBREAKER PADA KENDARAAN BIMANTARA NENGGALA Wijanarko, Heri; Sugihandoko; Lufti, Aryananta
JURNAL MEKANIKASISTA Vol. 13 No. 1 (2025): NOVEMBER 2025
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v13i1.390

Abstract

To support the vehicle’s high operational activity, a redesign of the shock absorber suspension system on the Bimantara Nenggala vehicle is required. The goal is to make the shock absorber stronger and more durable when traversing rough road surfaces. This is because the Bimantara Nenggala vehicle, which is one of the official vehicles used at the Military Academy, has experienced frequent damage to its shock absorbers during use. The redesign was carried out by changing the steel wire diameter from 14 mm to 16 mm. The research results show that by increasing the wire diameter from 14 mm to 16 mm, the solid length of the spring changed from 56 mm to 96 mm. This modification also altered the number of coils from 2.5 to 4.5, and the spring deflection increased from 39.38 mm to 41.48 mm. This design demonstrates that using a 16 mm wire diameter provides better performance compared to a 14 mm wire diameter. Additionally, the resulting deflection and number of coils are improved compared to the original design.
ANALISIS PERBANDINGAN PENGGUNAAN BAHAN BAKAR GASOHOL BE-20 DAN BENSIN JENIS PERTAMAX TERHADAP PRESTASI MESIN KENDARAAN KIJANG 7K Harjanto, Budi; Lufti, Aryananta; Silitonga, Frangky
JURNAL MEKANIKASISTA Vol. 13 No. 1 (2025): NOVEMBER 2025
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v13i1.392

Abstract

This research was conducted to determine the performance of an engine using a gasoline–ethanol fuel blend produced by the Enduro XL engine. To evaluate engine performance, calculations were carried out on effective power, fuel consumption, specific fuel consumption, and mass flow rate. In addition, theoretical mass flow rate, air–fuel ratio, volumetric efficiency, and thermal efficiency were also examined. The experiment was carried out under five variations of engine speed with a constant load, using only one type of fuel, namely Pertamax (gasoline) blended with 20% ethanol. The test results showed that the average power produced by the blended fuel was greater than that of pure gasoline. Fuel consumption increased with higher engine speed because the octane number of the gasoline–ethanol blend was higher than that of pure gasoline, making it more easily combustible. However, the higher the ethanol content in the fuel blend, the lower the air–fuel ratio, resulting in less complete combustion in the combustion chamber. The thermal efficiency of the blended fuel was generally lower than that of pure Pertamax, except for the 20% ethanol blend. Therefore, engine performance using Pertamax fuel was higher than that using BE-20 gasohol. However, fuel consumption for Pertamax was greater compared to BE-20 gasohol.
Co-Authors Budi Harjanto Edy Budi Santoso Frangky Silitonga Hafid, Achmad Heri Wijanarko HP, Bambang Nurtjahyono Sugihandoko Suparyana