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All Journal Journal of Information System and Technology (JOINT) Sibatik Journal : Jurnal Ilmiah Bidang Sosial, Ekonomi, Budaya, Teknologi, Dan Pendidikan Journal of Innovative and Creativity Impression : Jurnal Teknologi dan Informasi Emitor: Jurnal Teknik Elektro
Sandi, Wulan Marlia
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Arts Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Analisis Kerusakan Bearing Turbine Side di Turbocharger Type VTR-160 pada Auxiliary Engine Ashari, Muhammad Sadeli; Robbi, Shofa Dai; Sandi, Wulan Marlia; Kristiyono, Antonius Edy; Prawoto, Agus
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 1 (2025): Maret 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i1.787

Abstract

Turbocharger adalah alat bantu yang digerakkan oleh gas buang auxiliary diesel engine dan berfungsi memompa udara untuk proses pembilasan dan pembakaran di dalam silinder. Kinerja mesin ini sangat bergantung pada turbocharger. Kerusakan pada turbocharger, khususnya pada bearing, dapat menurunkan performa mesin secara signifikan. Penelitian ini bertujuan untuk mengidentifikasi penyebab kerusakan bearing turbocharger, dampaknya terhadap auxiliary engine, serta upaya perbaikannya di MV Armada Sejati. Metode yang digunakan adalah deskriptif kualitatif dengan pendekatan fishbone. Data dikumpulkan melalui observasi, wawancara, dan dokumentasi. Hasil penelitian menunjukkan bahwa kerusakan disebabkan oleh tercampurnya oli pelumas dengan gas buang, keausan sealing bush, dan tersumbatnya lubang oil pump. Dampaknya antara lain berkurangnya suplai udara, kerusakan ring piston, dan pembakaran yang tidak sempurna sehingga daya mesin menurun. Upaya pencegahan dilakukan dengan perawatan rutin turbocharger, penggantian komponen lama, serta pergantian oli pelumas secara berkala. A turbocharger is an auxiliary exhaust device that is driven by the auxiliary exhaust of a diesel engine and functions to pump air for the rinsing and combustion process inside the cylinder. The performance of this engine is highly dependent on the turbocharger. Damage to the turbocharger, especially to the bearings, can significantly degrade engine performance. This study aims to identify the cause of damage to the turbocharger bearing, its impact on the auxiliary engine, and its repair efforts in MV Armada Sejati. The method used is qualitative descriptive with a fishbone approach. Data was collected through observation, interviews, and documentation. The results of the study showed that the damage was caused by the mixing of lubricating oil with exhaust gases, the wear of the sealing bush, and the clogging of the oil pump holes. The impact includes reduced air supply, damage to the piston rings, and imperfect combustion so that engine power decreases. Prevention efforts are carried out with regular maintenance of turbochargers, replacement of old components, and periodic changes of lubricating oil  
Analisis Kinerja Pembakaran Nozzle Burner Pada Auxiliary Boiler Di Mv. Pan Kristine Dwisaputra, Muhammad Akmal; Simatupang, Rama Syahputra; Sandi, Wulan Marlia; Nugroho, Azis; Robbi, Shofa Dai
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 2 (2025): July 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i2.970

Abstract

Penelitian ini bertujuan untuk menganalisis faktor penyebab dan dampak dari tersumbatnya nozzle burner pada auxiliary steam boiler di kapal MV. Pan Kristine. Permasalahan yang muncul berupa penurunan tekanan uap dan flame failure saat kapal berlabuh, yang diduga disebabkan oleh gangguan pada sistem pembakaran. Data dikumpulkan melalui observasi langsung, wawancara dengan kru mesin, dokumentasi, serta studi pustaka. Hasil penelitian menunjukkan bahwa penyumbatan nozzle burner disebabkan oleh kurangnya perawatan rutin sesuai Planned Maintenance System (PMS), sistem filtrasi bahan bakar yang tidak efisien, nozzle yang aus atau rusak, serta jarak elektroda yang tidak sesuai dengan manual book. Dampak dari kondisi ini meliputi penurunan efisiensi pembakaran, peningkatan akumulasi jelaga dan kerak di ruang bakar, serta gangguan operasi boiler secara keseluruhan. Penelitian ini merekomendasikan penerapan PMS yang ketat, pemeriksaan berkala pada filter dan nozzle, serta pelatihan kru untuk meningkatkan pemahaman terhadap sistem pembakaran guna menjamin keandalan dan efisiensi kerja auxiliary boiler.   This study aims to analyze the causes and impacts of nozzle burner clogging in the auxiliary steam boiler aboard the MV. Pan Kristine. The issue arose from steam pressure drops and repeated flame failures while the ship was anchored, suspected to result from malfunction in the combustion system. Data were collected through direct observation, interviews with engine crew, documentation, and literature study. The findings reveal that the clogging of the nozzle burner is caused by insufficient routine maintenance according to the Planned Maintenance System (PMS), inefficient fuel filtration, worn or damaged nozzles, and electrode spacing that does not comply with the instruction manual. These issues lead to reduced combustion efficiency, increased soot and scale accumulation in the combustion chamber, and overall operational disruption of the boiler. The study recommends implementing a strict PMS, regular inspection of fuel filters and nozzles, and improved crew training to ensure the reliability and efficiency of the auxiliary boiler system.  
Perancangan Sistem Kontrol Propulsi Hibrida Kapal Trimaran Berbasis Fuzzy Logic Aldoko, Fajar Surya Muhammad; Kurniawan, Edi; Amrullah, Romanda Annas; Nurdiansari, Henna; Sandi, Wulan Marlia
Journal of Information System and Technology (JOINT) Vol. 6 No. 3 (2025): Journal of Information System and Technology (JOINT)
Publisher : Program Sarjana Sistem Informasi, Universitas Internasional Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/joint.v6i3.11303

Abstract

This study presents the design and implementation of a hybrid propulsion control system for a trimaran vessel using fuzzy logic. The system integrates a Brushless DC (BLDC) motor and an internal combustion engine, controlled by STM32 and ESP32 microcontrollers, with sensors for speed and current monitoring. The fuzzy logic algorithm was developed with two input variables—speed error and delta error—and one output variable for motor control. Experimental testing was conducted on a trimaran prototype in river conditions to evaluate system performance. The results show that, without fuzzy logic, the vessel’s speed fluctuated significantly, deviating from the reference set point. In contrast, with fuzzy logic control, the vessel maintained a more stable speed, achieving an average error of less than 5%. This demonstrates that fuzzy logic can effectively address the non-linear characteristics of hybrid propulsion systems, providing adaptive control that enhances speed stability and energy efficiency.
Design of a Ship Speed Control System Using Hybrid Propulsion Based on Fuzzy Logic Aldoko, Fajar Surya Muhammad; Kurniawan, Edi; Amrullah, Romanda Annas; Nurdiansari, Henna; Sandi, Wulan Marlia
Emitor: Jurnal Teknik Elektro Vol 25, No 3: November 2025
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v25i3.12727

Abstract

The maritime transportation sector, especially in archipelagic countries like Indonesia, faces significant challenges in optimising ship speed and fuel efficiency, particularly when using hybrid propulsion systems. This study aims to design a ship speed control system based on fuzzy logic integrated with a hybrid propulsion system (BLDC motor and diesel engine) for a trimaran vessel. The research employed both static and dynamic testing on the system, measuring parameters such as motor RPM, current consumption, voltage, and fuel efficiency across different speed modes (from 4 km/h to 11 km/h). The results showed that the fuzzy logic-based control system notably improved speed stability and fuel efficiency, especially at lower speeds, compared to conventional systems. Additionally, the system effectively adapted to environmental conditions such as waves and currents, optimising power distribution between the BLDC motor and diesel engine. The conclusion emphasises that this fuzzy logic-based control system offers a promising solution to enhance operational efficiency in hybrid propulsion systems for maritime vessels, ensuring reduced fuel consumption and improved environmental sustainability.
ANALISIS MENURUNNYA TEKANAN LUBRICATING OIL PADA DIESEL GENERATOR DI KM. DHARMA KARTIKA VII Dolly Sirait, Maruli; Nugroho, Azis; Sandi, Wulan Marlia; Zainuddin, Mochammad; Kristiyono, Antonius Edy
SIBATIK JOURNAL: Jurnal Ilmiah Bidang Sosial, Ekonomi, Budaya, Teknologi, Dan Pendidikan Vol. 5 No. 2 (2026)
Publisher : Penerbit Lafadz Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/sibatik.v5i2.4397

Abstract

Diesel generators are vital components in a ship's machinery system that converts mechanical energy into electrical energy. Diesel generators serve as the primary source of electrical power for various onboard needs, such as ship operations, navigation, communications, comfort, and other equipment. The lubrication system (lubricating oil) is a special liquid that plays a crucial role in lubricating engine components, ensuring smooth engine operation, and maintaining the performance and reliability of diesel generator engines. A decrease in lubricating oil pressure can cause overheating, increased friction between components, and even overall engine damage. This study aims to analyze the causes of the decrease in lubricating oil pressure in the diesel generator on the KM. Dharma Kartika VII ship and its handling efforts. The method used is a descriptive qualitative approach with data collection techniques through direct observation, interviews with engineers, documentation, and literature studies. The results of this study are expected to serve as a practical reference for ship crews and maritime cadets in handling disturbances in the diesel generator lubrication system appropriately.
ANALISIS KERUSAKAN BEARING TERHADAP EFISIENSI KINERJA SEA WATER COOLING PUMP MAIN ENGINE DI KAPAL MV. HODASCO 19 Pratama, Muhammad Aditya; Nasri, Nasri; Sandi, Wulan Marlia; Gunarti, Monika Retno; Robbi, Shofa Dai
Journal of Innovative and Creativity Vol. 6 No. 1 (2026)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Keandalan sistem permesinan kapal krusial untuk operasional maritim, namun kegagalan bearing pada sea water cooling pump (SWCP) sering menyebabkan penurunan efisiensi dan risiko mesin induk. Penelitian ini menganalisis faktor penyebab, dampak kinerja, dan konsekuensi operasional kerusakan bearing SWCP main engine di MV. Hodasco 19. Menggunakan desain studi kasus dengan mixed methods (kualitatif-deskriptif induktif dan kuantitatif-komparatif deskriptif), populasi satu unit SWCP (Akasaka 6UEC-37H-IIB) dengan sampel purposive Chief Engineer sebagai informan kunci. Instrumen mencakup observasi partisipatif, wawancara mendalam, vibrometer terkalibrasi (ISO 10816-3:2009), mikrometer, dan logbook; analisis melalui model interaktif kualitatif (Miles & Huberman, 1984) serta persentase komparatif kuantitatif dengan triangulasi. Hasil menunjukkan mixed-mode failure dari kelelahan material (2160 jam), keterlambatan pelumasan (100 jam), dan kontaminasi air laut, menyebabkan keausan 0,3 mm, lonjakan getaran +38,9%, penurunan efisiensi -5,3%, tekanan -9,5%, serta temperatur mesin +5,1% hingga 82°C. Kesimpulan mengonfirmasi pemulihan penuh pasca-perbaikan korektif, merekomendasikan pemantauan getaran rutin dan jadwal pelumasan ketat.
Co-Authors Abda Abda Aldoko, Fajar Surya Muhammad Ashari, Muhammad Sadeli Dolly Sirait, Maruli Dwisaputra, Muhammad Akmal Eka Nurmala Sari Agustina, Eka Nurmala Sari Gunarti, Monika Retno Kristiyono, Antonius Edy Nasri Nasri, Nasri Nugroho, Azis Nurdiansari, Henna Pratama, Muhammad Aditya Prawoto, Agus Robbi, Shofa Dai Romanda Annas Amrullah Simatupang, Rama Syahputra Tanti Diyah Rahmawati, Tanti Diyah Vigih Hery Kristanto ZAINUDDIN, MOCHAMMAD