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Yohanes C. Sutama
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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.
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.
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
Co-Authors Ade Susilo Aditya Endratma Afitro Adam Nugraha Ajib Rosadi Edi Widyartono, Andreas Fauzan Arya Ramadani Pramastya Widya Naluri Rudi Kiswanto Yusak Faqih Wibowo