The Current State of Environmentally Acceptable Lubricants in Stern Tube Lubrication: A Review

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F25%3A00637867" target="_blank" >RIV/67985858:_____/25:00637867 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27360/25:10258240

Výsledek na webu

<a href="https://asmedigitalcollection.asme.org/tribology/article/147/10/100801/1219301/The-Current-State-of-Environmentally-Acceptable" target="_blank" >https://asmedigitalcollection.asme.org/tribology/article/147/10/100801/1219301/The-Current-State-of-Environmentally-Acceptable</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/1.4069028" target="_blank" >10.1115/1.4069028</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Current State of Environmentally Acceptable Lubricants in Stern Tube Lubrication: A Review

Popis výsledku v původním jazyce

To reduce environmental pollution from maritime transportation, the mandatory use of environmentally acceptable lubricants (EALs) at all seawater–oil interfaces was introduced through various legislative measures. However, the transition from mineral oils to EALs in the case of stern tube lubrication systems was accompanied by an increase in the occurrence of stern tube bearing malfunctions that required dry docking of the ship and costly repairs. As a result, today EALs suffer from a loss of trust from ship owners, as can be evidenced by the fact that only a small fraction of new ships are being commissioned with lubricating systems using EALs. Alternative solutions, such as air sealing systems withnmineral oils or water lubrication systems, are often preferred solutions instead. As a result, the large number of ships operated nowadays use mineral oils, although in combination with various leak prevention solutions. To address the cause of the mentioned issues, this study focuses on the analysis of different performance characteristics between stern tube EALs and mineral oils. Their properties are discussed with regard to typical operating conditions of the stern tube bearings. The main identified differences were in characteristics such as viscosity–temperature and viscosity–pressure behavior, oxidation stability, and hydrolytic and microbial stability. Suggestions for EAL formulations tailored to the sternntube bearing lubrication are proposed, as well as the focus areas for future research to understand the EAL behavior in this application.

Název v anglickém jazyce

The Current State of Environmentally Acceptable Lubricants in Stern Tube Lubrication: A Review

Popis výsledku anglicky

To reduce environmental pollution from maritime transportation, the mandatory use of environmentally acceptable lubricants (EALs) at all seawater–oil interfaces was introduced through various legislative measures. However, the transition from mineral oils to EALs in the case of stern tube lubrication systems was accompanied by an increase in the occurrence of stern tube bearing malfunctions that required dry docking of the ship and costly repairs. As a result, today EALs suffer from a loss of trust from ship owners, as can be evidenced by the fact that only a small fraction of new ships are being commissioned with lubricating systems using EALs. Alternative solutions, such as air sealing systems withnmineral oils or water lubrication systems, are often preferred solutions instead. As a result, the large number of ships operated nowadays use mineral oils, although in combination with various leak prevention solutions. To address the cause of the mentioned issues, this study focuses on the analysis of different performance characteristics between stern tube EALs and mineral oils. Their properties are discussed with regard to typical operating conditions of the stern tube bearings. The main identified differences were in characteristics such as viscosity–temperature and viscosity–pressure behavior, oxidation stability, and hydrolytic and microbial stability. Suggestions for EAL formulations tailored to the sternntube bearing lubrication are proposed, as well as the focus areas for future research to understand the EAL behavior in this application.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

<a href="/cs/project/TO01000250" target="_blank" >TO01000250: Nové přístupy pro cenově dostupná environmentálně šetrná maziva</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Tribology-Transactions of the Asme

ISSN

0742-4787

e-ISSN

1528-8897

Svazek periodika

147

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

100801

Kód UT WoS článku

001560808700006

EID výsledku v databázi Scopus

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