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All Journal Meteor STIP Marunda
Bayu Putra Pratama
Politeknik Ilmu Pelayaran Semarang
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Pengaruh Rekondisi Poros Engkol Aux. Engine No. 1 Terhadap Kenaikan Temperature Minyak Lumas Di MT. Senipah Bayu Putra Pratama
Meteor STIP Marunda Vol 16 No 1 (2023): Juni
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) STIP Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36101/msm.v16i1.266

Abstract

Aux. Engine generator is an auxiliary machinery or generator, which functions to generate electricity. The electricity is useful for shipboard purposes such as supplying electricity pumps, electrical equipment and other machinery that uses electrical energy on board the ship. Researchers use qualitative descriptive methods, triangulation of observation results, interviews and literature studies. Using SHEL data analysis techniques, researchers identified the causal factors, impacts and efforts made related to the influence of Aux crankshaft reconditioning. Engine No.1 against the increase in L.O temperature. The results obtained from this study showed that the cause of the increase in L.O temperature Aux. Engine No.1 is caused by the wear of the crankpin bearing, with the damage it will have an impact on the looseness of the crankpin bearing components with the crankshaft so that the L.O pressure decreases and the L.O lubrication is not optimal. Efforts made to prevent this are to wait for ship spare parts with standards in accordance with the manual book and crankpin size after reconditioning, as well as carry out routine system maintenance plans.
Effect of Auxiliary Engine No. 1 Crankshaft Reconditioning on Lubricating Oil Temperature Rise in MT. SENIPAH Bayu Putra Pratama
Meteor STIP Marunda Vol. 16 No. 1 (2023): Vol 16 No 1 (2023): June
Publisher : Meteor STIP Marunda

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Abstract

This study investigates the effect of crankshaft reconditioning (regrinding/undersizing) on the lubricating oil temperature rise (ΔT) of Auxiliary Engine No. 1 aboard MT. Senipah. A quantitative descriptive field case study approach was employed, comparing thermal performance data before and after the reconditioning process under three load scenarios: 50%, 75%, and 85–90%. Primary data were collected through onboard measurements of lube oil inlet/outlet temperatures, bearing clearances, crankshaft deflection, and journal surface roughness. Secondary data were obtained from the Engine Log Book, workshop reconditioning reports, and manufacturer specifications. Post-reconditioning running tests revealed that the lubricating oil temperature differential (ΔT) remained within the manufacturer’s acceptable limit of 10–12°C across all load conditions, with outlet temperatures consistently below the 75°C normal threshold. The frictional heat generation analysis confirmed that proper clearance restoration and adequate surface finish reduced hydrodynamic friction to within design parameters. A Fishbone (Ishikawa) root cause analysis identified four contributing factor categories—Man, Machine, Material, and Method—to potential post-reconditioning overheating. The study concludes that properly executed crankshaft reconditioning effectively restores thermal stability in the lube oil system, provided that bearing clearances conform to the maker’s undersize chart and a controlled running-in procedure is followed.
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