Impact of Oil Supply Conditions on Water Lubrication Assisted With Minimal Secondary Lubricating Medium

verfasst von

Hao Ji, Tao Yu, Xiaohan Zhang, Feng Guo, Peng Liang, Gerhard Poll

Abstract

Previous research has revealed that introducing a secondary lubricating medium can temporarily enhance water-lubricated bearing performance, thereby reducing the risk of lubrication failure under challenging conditions. This study aims to identify the optimal injection point for the secondary lubricating medium and evaluates oil supply rate effects. Experiments are conducted using a block-on-ring test rig, complemented by computational fluid dynamics (CFD) simulations to elucidate the underlying mechanisms. Three oil supply settings, upstream, inlet and outlet of the contact region, are compared. Results show that upstream oil supply led to a lower critical speed at which the added oil loses any effect compared to the inlet oil supply and outlet oil supply. The effect of oil supply rates on friction reduction varies among the oil supply settings and ring rotational speeds. In conclusion, the most effective oil supply setting positions the injector at the outlet of the contact region, outperforming placement at the entrance of the contact region.

Organisationseinheit(en)

Institut für Maschinenkonstruktion und Tribologie

Externe Organisation(en)

Qingdao Technological University

Typ

Artikel

Journal

Journal of tribology

Band

146

Anzahl der Seiten

12

ISSN

0742-4787

Publikationsdatum

10.2024

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Werkstoffmechanik, Maschinenbau, Oberflächen und Grenzflächen, Oberflächen, Beschichtungen und Folien

Elektronische Version(en)

https://doi.org/10.1115/1.4065495 (Zugang: Geschlossen)