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All Journal Rekayasa Mesin Turbo : Jurnal Program Studi Teknik Mesin Jurnal ABDINUS : Jurnal Pengabdian Nusantara Jurnal Pendidikan Vokasi Otomotif Jurnal Polimesin TECHNOLOGIC
Afitro Adam Nugraha
Politeknik Astra
Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Journal : technologic

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PEMBUATAN KOMPONEN MODUL UNTUK INDIKATOR LEVEL BENSIN MENJADI LEVEL BATERAI PADA DISPLAY SEPEDA MOTOR LISTRIK KONVERSI TANPA MERUBAH FUNGSI DAN TAMPILAN ORIGINAL DISPLAY SEPEDA MOTOR Nugraha, Afitro Adam
Technologic Vol 14 No 2 (2023)
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v14i2.351

Abstract

Pada proses konversi sepeda motor, dilakukan beberapa perubahan seperti desain penggerak, sumber energi bagi penggerak, wairing diagram kelistrikan dan display indikator sepeda motor. Dalam mengkonversi sepeda motor menjadi elektrik maka display asli sepeda motor tidak dapat digunakan untuk melihat level baterai dikarenakan bahan bakar yang sudah dikonversi. Penelitian ini bertujuan melakukan pembuatan komponen modul dengan biaya terjangkau yang diharapkan dapat merubah indkator tingkat level bahan bakar menjadi indkator tingkat level baterai. Metode yang dilakukan pada penelitian ini diantaranya melakukan studi literatur, membuat konsep desain modul indikator level baterai, perancangan dan pembuatan modul dan menganalisa hasil pembuatan modul. Dengan modul ini pengendara apat melihat level baterai sama seperti ketika melihat level bensin, indikator ketika bahan bakar perlu diisi sma dengan pemberitahuan isi baterai. Originalitas display pada dasbor sepeda motor tetap dipertahankan. Tidak perlu menambah atau merubah komponen tampilan di depan sepeda motor ketika memakai modul ini. Tidak merusak wiring kelistrikan diagram asli. Sangat mudah digunakan karna hanya terdapat 4 kabel keluaran saja yaitu kabel pada pin display, kabel ground, kabel power, dan kabel ke baterai. Dimensi modul yaitu 120 mm x 100 mm x 4 mm. Ukuran tidak memakan banyak tempat. Dapat dengan mudah diletakan didalam bodi sepeda motor sehingga tidak terlihat dari luar. Biaya pembuatan yang terjangkau hingga memangkas 47.82% - 66.25% dibandingkan dengan memakai modul display pabrikan khusus untuk sepeda motor elektrik.
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.
MENINGKATKAN BENEFIT PADA PROSES PENGURASAN AIR DARI KONTROL ELEKTRIK KE KONTROL PNEUMATIK, PADA SISTEM UDARA BERTEKANAN Nugraha, Afitro Adam; Yohanes C. Sutama; Fauzan Arya Ramadani; Ade Susilo; Edi Widyartono, Andreas
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.v15i1.367

Abstract

In PT ADM Casting Plant, the use of compressed air is essential to operate several production machines that utilize pneumatic systems. The compressed air is sourced from the compressors owned by PT ADM Casting Plant. The compressed air must be dry and not wet or moist. If it is wet or moist, it can cause water to enter the air pipelines of the production machines and pose a corrosion risk due to condensation in the pneumatic lines of the production machines. Before entering the production machines, the compressed air must undergo several processes such as Suction-Storage-Drying. However, during the storage process, a significant amount of compressed air is wasted during the draining of condensed water accumulated in the Air Receiver Tank. The draining process still utilizes solenoid valves without any separator or divider between the condensed water and the compressed air, and it still relies on timing or time-based valve opening and closing as a benchmark. The wasted air results in difficulty achieving the desired air pressure produced by the compressor. Consequently, the compressor continues to operate to reach the predetermined air pressure. After analyzing the problem and available data, a solution was developed by replacing the solenoid valves with a Pneumatic No-Loss Drain. The purpose of this replacement is to serve as a separator between the condensed water and the compressed air during the draining process.
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
MENURUNKAN CYCLE TIME STOCK OPNAME IMPORT PARTS DENGAN PATTERN SUPPLY FORM BERBASIS WEBSITE DI ASSEMBLING K-LINE 5 PT ASTRA DAIHATSU MOTOR Nugraha, Afitro Adam; Rudi Kiswanto; Yohanes C. Sutama; Pramastya Widya Naluri
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.v15i1.371

Abstract

PT Astra Daihatsu Motor-Engine Plant focuses on producing engines for Daihatsu vehicles and several Toyota vehicles. The Quality Inhouse-Section Audit System Development Department, which focuses on auditing the entire production process, found that the Exicom-Section Import Component Department's KPI had not yet reached the target in the productivity section due to a delay in supply to the k-line 5 assembly. The supply delay was due to the cycle time target of the stock taking process not being achieved (target 40 minutes and actual 63.1 minutes). Then, not achieving the target cycle time of the stock taking process is analyzed using fishbone analysis so that the root cause is found, namely PIC inputs twice for each data, final stock data input to pattern supply sheets and files, stock taking locations (on shelves, dolly transit, and dolly setting), and pattern supply files can only be accessed by a computer in the office import component. The author will address these four root causes with a website-based supply form pattern that will speed up the stock taking process so that the target cycle time (40 minutes) will be achieved
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
OPTIMALISASI SERVICE 40.000 KM PADA PROSES PEMBUANGAN DAN PENGISIAN OLI DIFFERENTIAL DENGAN MENGEMBANGKAN ALAT PENAMPUNG PEMBUANGAN SERTA PENGISIAN DI PT XYZ Nugraha, Afitro Adam; Putra, Farrel Adnan; Widyartono, Andreas Edi; Rosadi, Ajib
Technologic Vol 16 No 2 (2025): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/technologic.v16i2.469

Abstract

Gardan adalah komponen kendaraan penggerak belakang yang penting, oleh karena itu, perawatan harus dilakukan setiap 40.000 km. Masalah yang ada pada proses penggantian oli gardan terdapat pada alat yang kurang efisien. Ketersediaan alat penampung yang sedikit serta potensi berceceran pada lantai membuat proses penggantian oli gardan kurang efektif. Salah satu ide perbaikan adalah penulis membuat improvement berupa alat bantu pembuangan dan pengisian dengan tujuan dapat menunjang proses penggantian oli gardan sehingga menjadi lebih optimal. Kemudian dilengkapi juga indikator ketinggian oli dan pengunci alat agar tidak mudah tergeser serta juga membuat workshop lebih bersih karena limbah ditampung dengan baik dan benar sehingga dapat meningkatkan unit entry dan produktivitas teknisi serta stall atau area servis. Penelitian dimulai menggunakan Quality Control Circle (QCC) serta melakukan wawancara dan observasi. Metode yang digunakan dalam menemukan akar masalah ialah analisis fishbone. Kemudian untuk menentukan ide perbaikan, digunakan kaidah 5W+2H. Setelah improvement dilakukan sesuai dengan ide-ide perbaikan, adanya alat bantu berhasil membuat penurunan waktu dari 54 menit menjadi 44 menit dengan efisiensi waktu 18.5% dan mendapatkan flaterate jasa sebesar 18.6% dalam satu tahun sehingga dapat meningkatkan produktivitas bengkel serta pendapatan bengkel serta dapat meningkatkan safety pada proses penggantian oli gardan.
PERANCANGAN DAN IMPLEMENTASI BENCH TEST ENGINE TYPE E UNTUK MENINGKATKAN EFISIENSI PROSES REPAIR ENGINE DI PT XYZ Kesawa I Gusti Nyoman; Muhammad Refhiyandhi; Afitro Adam Nugraha; Elroy F. K. P. Tarigan; Yohanes C. Sutama
Technologic Vol 17 No 1 (2026): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/technologic.v17i1.531

Abstract

PT XYZ merupakan perusahaan manufaktur di bidang otomotif yang menjalankan berbagai proses produksi, meliputi casting, machining, welding, painting, press, dan assembly. Sebagai bagian dari komitmen terhadap peningkatan kualitas berkelanjutan, perusahaan secara konsisten melakukan upaya perbaikan proses. Berdasarkan data periode Oktober 2024 hingga Februari 2025, tercatat sebanyak 1.758 unit engine tipe E mengalami proses repair, dengan 967 unit atau 2.320 unit dalam 1 tahun diantaranya mengalami repair berulang (lebih dari satu kali). Kondisi ini menunjukkan adanya in-efisiensi proses perbaikan yang berdampak pada peningkatan biaya dan waktu produksi. Hasil analisis menunjukkan bahwa penyebab utama terjadinya repair berulang adalah keterbatasan alat dalam proses diagnosis awal serta tidak adanya fasilitas pengujian (testing) engine setelah proses perbaikan. Untuk mengatasi permasalahan tersebut, dilakukan perancangan dan implementasi engine bench test yang berfungsi sebagai alat bantu diagnosis dan pengujian pasca-repair. Metode penelitian yang digunakan adalah pendekatan Eight Step Problem Solving yang dikombinasikan dengan analisis akar penyebab menggunakan konsep 4M+1E (man, machine, method, material, dan environment). Evaluasi hasil perbaikan dilakukan menggunakan indikator kinerja QCDSM (quality, cost, delivery, safety, dan morale). Hasil implementasi menunjukkan bahwa penggunaan engine bench test mampu menurunkan jumlah engine yang mengalami repair berulang sebesar 1.405 unit per tahun, sehingga meningkatkan efektivitas proses perbaikan dan kualitas hasil kerja secara keseluruhan.
Co-Authors Ade Susilo Aditya Endratma Ajib Rosadi Andreas Edi Widyartono Bayu Aji Rizqi Ramadhan Busrah Edi Widyartono, Andreas Elroy F. K. P. Tarigan Fauzan Arya Ramadani Hadiyanto Kesawa I Gusti Nyoman Lukman Wijanarno Maghetan, Yogas Weka Muhamad Raihan Muhammad Refhiyandhi Pramastya Widya Naluri Prio Sembodo Purwoko, Pembabtis Agung Purwoko, Yohanes Pembabtis Agung Putra, Farrel Adnan Rosadi, Ajib Rudi Kiswanto Rusdi Febriyanto Sutama, Yohanes Climacus Syahril Ardi Teguh Waluyo Wicaksono, Andreadie Yohanes C. Sutama Yohanes C. Sutama Yusak Faqih Wibowo Zulfikar, Farhan Aufa