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Ajib Rosadi
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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PURWARUPA SIMULATOR THROTTLE BY WIRE SEBAGAI MEDIA PEMBELAJARAN ENGINE MANAGEMENT SYSTEM Nugraha, Afitro Adam; Aditya Endratma; Ajib Rosadi; Yohanes C. Sutama
Technologic Vol 14 No 2 (2023)
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v14i2.366

Abstract

Engine management system saat ini semakin kompleks, dan pemahaman yang baik tentang teknologi ini penting bagi para mahasiswa Program Studi Mesin Otomotif. Penelitian ini menggunakan metode penelitian 8 langkah perbaikan. Penelitian ini melibatkan partisipasi dari mahasiswa Program Studi Mesin Otomotif sebagai subjek dalam penerapan simulator throttle by wire sebagai media pembelajaran engine management system. Data yang terkumpul meliputi hasil pre-test dan post-test, serta tanggapan dari mahasiswa terhadap penggunaan simulator throttle by wire. Hasil penelitian menunjukkan bahwa simulator throttle by wire efektif dalam memudahkan mahasiswa dalam memahami throttle by wure. Dengan menggunakan simulator throttle by wire, mahasiswa dapat secara langsung berinteraksi dengan komponen dan proses yang terlibat dalam sistem. Selain itu, tanggapan dari mahasiswa terhadap penggunaan simulator throttle by wire secara keseluruhan sangat positif. Mereka menganggap simulator ini sebagai alat pembelajaran yang interaktif, menyenangkan, dan membantu mereka untuk lebih memahami konsep-konsep dasar dalam engine management system. Dengan demikian, penelitian ini menyimpulkan bahwa penggunaan simulator throttle by wire efektif dalam memudahkan mahasiswa dalam memahami prinsip dasar tentang engine management system. Dengan memudahnya pemahaman mahasiswa maka pembuatan simulator dapat diterapkan untuk mempermudah dalam penyampaian materi pembelajaran yang lainnya.
PEMANFAATAN ENERGI ANGIN COOLING TOWER SEBAGAI SUMBER ENERGI ALTERNATIF DI AREA PAINTING PT ASTRA DAIHATSU MOTOR KARAWANG Nugraha, Afitro Adam; Lukman Wijanarno; Ajib Rosadi; Hadiyanto
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.369

Abstract

The global energy crisis which is based on fossil-based energy security encourages efforts to make a just and sustainable energy transition. This study aims to explore and test the potential utilization of wind energy sources from Cooling Towers as an efficient and sustainable alternative energy source. Cooling Tower at PT Astra Daihatsu Motor is the focus of research because this company has implemented the Sustainable Development Goal's (SDG's) program which is in line with the goal of contributing to handling global problems, including in clean energy and tackling climate change. Wind energy from the Cooling Tower is analyzed using the wind power formula which produces a power of 1,373 watts at an average wind speed of 9 m/s from 1 hole in the Cooling Tower. To optimize its utilization, a HAWT (Horizontal Axis Wind Turbine) type wind turbine is installed in the Cooling Tower chimney. This turbine produces 425 watts of wind power with a power coefficient of 0.43 and a tip speed ratio of 9.7. PMSG (Permanent Magnet Synchronous Generator) type generator was chosen as a converter of kinetic energy into electrical energy. The implementation results show that the wind turbine can only produce 79.52 watts with a generator efficiency of 18.7% of the received wind resources. This research obtained electricity cost savings of Rp. 660,660/year and reduce TCO2 emissions by 0,416 TCO2/tahun. Utilization of wind energy sources from Cooling Towers shows potential as a sustainable alternative energy source. In addition to reducing dependence on fossil energy sources, the use of wind energy also has a positive impact on the environment by reducing greenhouse gas emissions.
MENINGKATKAN EFEKTIVITAS PROSES PURGING ENGINE DIESEL MENGGUNAKAN DIESEL PURGING KIT BERBASIS ARDUINO UNO DI PT ASTRA INTERNATIONAL ISUZU SALES OPERATION CABANG CIPUTAT Nugraha, Afitro Adam; Prio Sembodo; Ajib Rosadi; Busrah
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.370

Abstract

A diesel engine is a machine known as an internal combustion engine which uses the heat of compression to ignite fuel that has been sprayed by a nozzle into the combustion chamber. The problem that often occurs in Diesel engines is interference with the fuel system. When these disturbances occur, trouble shooting must be carried out on the fuel system and periodic maintenance can be carried out to minimize disturbances to the Diesel engine fuel system. The Arduino Uno-based Diesel purging kit is equipped with digital parameters to read the turbidity level of the purging liquid so that it is expected to facilitate mechanics in the Diesel engine purging process and make it more efficient and effective. The test results show a graphic of turbidity during the first 5 minutes to 20 minutes there is a significant increase in the percentage of liquid turbidity. However, in the last minute of the process there was only an increase of 2% which means that the maximum result of the process touched the turbidity rate of 72%. After the procurement of the tool, the Diesel engine purging process cut the time by 30 minutes compared to before the tool was available
RANCANG BANGUN UNIVERSAL TOOL BIT UNTUK PENGENCANGAN MUR PENGUNCI TIE ROD Nugraha, Afitro Adam; Yusak Faqih Wibowo; Yohanes C. Sutama; Ajib Rosadi
Technologic Vol 15 No 1 (2024): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v15i1.373

Abstract

Abstract-- Precise tightening of tie rod lock nuts is a crucial aspect in maintaining the safety and optimal performance of a vehicle's steering system. The primary challenge in this process is the impracticality of tightening using torque wrenches connected to shock wrenches due to limited accessibility and the difficult-to-reach location of the lock nuts. To address this obstacle, researchers have designed an effective solution in the form of a torque wrench extension made from S45C steel. This torque wrench extension allows technicians to tighten tie rod lock nuts that were previously inaccessible using shock wrenches, while also applying the required torque specified for the application. The objective of this study is to evaluate the effectiveness of using the torque wrench extension to enhance the accuracy of tightening tie rod lock nuts at UPT Otomotif Politeknik Astra. Experiments were conducted by applying the torque wrench extension to several vehicles brought into the Automotive workshop at UPT Otomotif Politeknik Astra. Due to the inability to tighten lock nuts with shock wrenches, a direct comparison between the tightening using the torque wrench extension and conventional tightening methods could not be performed on the tie rod lock nuts. Therefore, the comparative tightening was executed on sample nuts. The research findings demonstrate that the utilization of the torque wrench extension significantly improves the accuracy of tightening tie rod lock nuts with lower error rates compared to conventional tightening methods. This discovery suggests the effective application of the torque wrench extension as a solution to enhance the accuracy of tie rod lock nut tightening, not only at UPT Otomotif Politeknik Astra but also at other locations. Implementing the torque wrench extension will effectively contribute to maintaining the safety and optimal performance of a vehicle's steering system while reducing the potential risks arising from improper tightening
Co-Authors Aditya Endratma Afitro Adam Nugraha Busrah Hadiyanto Lukman Wijanarno Prio Sembodo Yohanes C. Sutama Yusak Faqih Wibowo