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All Journal Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Rodlitul Awwalin
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Industrial & Manufacturing Engineering Mechanical Engineering

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Analisis Penyebab Penurunan Kinerja Intercooler pada Mesin Induk KM Bintan Utama Fathul Bari; Daryanto Daryanto; Rodlitul Awwalin
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 3 No. 2 (2025): Mei : Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v3i2.828

Abstract

This study aims to analyze the factors that cause the decline in intercooler performance on the main engine of KM Bintan Utama, its impact on engine performance, and the corrective measures that need to be taken. Based on the analysis, three main factors contribute to the decrease in intercooler performance: dirty air fins in the intercooler, lack of routine maintenance, and blockage in the seawater pipe filter. This decline in intercooler performance significantly affects the main engine, such as increased engine temperature, which can lead to damage to critical components. To address this issue, several actions need to be taken, including cleaning the intercooler air fins regularly and ensuring maintenance is carried out according to the recommended manual. Proper maintenance implementation will help maintain the performance of the main engine and extend the life of the intercooler and other components.
Analisis Kerusakan Pompa Pendingin Air Laut pada Mesin Induk di Mv. Manalagi Wanda Fikri Aldiyansyah; Sugeng Marsudi; Rodlitul Awwalin
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 4 No. 2 (2026): Mei: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v4i2.1449

Abstract

This study aims to identify the causes of sea water cooling pump failure, analyze its impact on the main engine cooling system, and explain the corrective actions taken to restore pump performance on board MV. Manalagi Wanda. The sea water cooling pump is one of the essential auxiliary machines responsible for circulating seawater as a cooling medium to maintain the main engine operating temperature within a safe range during ship operations. This research employed a descriptive qualitative method with data collected through direct observation, interviews with the Chief Engineer, Fourth Engineer, and Foreman, as well as documentation during the sea practice period. The collected data were analyzed to determine the relationship between pump component failures and the decline in the performance of the main engine cooling system. The findings revealed that the pump pressure decreased from 2.4 bar to 1.4 bar, causing the main engine High Temperature (HT) to rise from 80.5°C to 82.5°C. Inspection and dismantling of the pump identified damage to the mechanical seal, bearing, and shaft. These damaged components resulted in leakage, excessive vibration, unstable pump rotation, and reduced seawater flow rate. Corrective maintenance was carried out by replacing the damaged components with new parts according to the manufacturer's specifications. After reassembly and a successful test run, the pump pressure returned to 2.4 bar, while the HT temperature decreased to approximately 80.0°C, allowing the cooling system to operate normally and efficiently once again.
Analisis Kegagalan Sistem Pelumasan Piston pada Diesel Generator Nomor 1 di Kapal MV. Hanglima Moh. Rifqi Bagus Wahyudi; Sugeng Marsudi; Rodlitul Awwalin
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 4 No. 2 (2026): Mei: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v4i2.1460

Abstract

This study analyzes the causes of piston lubrication system failure and its impact on the performance of Diesel Generator No. 1 aboard MV. Hanglima. The lubrication system is essential for reducing friction, cooling engine components, and preventing wear to ensure reliable diesel engine operation. This research employed a qualitative descriptive approach using direct observation in the engine room, interviews with engine crew members, and documentation from engine logbooks and engine disassembly results. The findings show that the engine initially operated normally, but a significant increase in fresh water and lubricating oil temperatures, followed by a drop in lubricating oil pressure below the minimum operating limit of 2.5 bar, activated the Low Lubricating Oil Pressure alarm. This condition caused the engine speed to decrease from 1200 RPM to approximately 700 RPM, reducing both frequency and electrical power output. Engine disassembly revealed that the failure was primarily caused by a blocked piston cooling jet in Cylinder No. 3, contaminated oil filters, sludge accumulation in the oil sump, and wear on the piston and cylinder liner. Regular preventive maintenance is therefore essential to ensure stable and reliable diesel generator performance.
Co-Authors Daryanto Daryanto FATHUL BARI Fikri Aldiyansyah Moh. Rifqi Bagus Wahyudi Sugeng Marsudi