Journal ArticleDOI
Impact of high pressure and shear thinning on journal bearing friction
David Emanuel Sander,Hannes Allmaier,Hans-Herwig Priebsch,Franz Markus Reich,Mario Witt,T. Füllenbach,Athanassios Skiadas,Ludwig Brouwer,Hubert Schwarze +8 more
TLDR
In this paper, the impact of the piezoviscous effect and non-Newtonian lubricant properties on the friction power losses in journal bearings over a wide range of dynamic loads and shaft speeds was investigated.About:
This article is published in Tribology International.The article was published on 2015-01-01. It has received 57 citations till now. The article focuses on the topics: Lubrication & Bearing (mechanical).read more
Citations
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Overview of automotive engine friction and reduction trends– Effects of surface, material, and lubricant-additive technologies
Victor W. Wong,Simon Tung +1 more
TL;DR: In this article, the fundamentals of friction specific to the environments of engine components tribology are reviewed, together with discussions on the impact of developing vehicle powertrain technologies, surface and material technologies, as well as lubricant and additive technologies on promises of continuing friction and wear reduction trends.
Journal ArticleDOI
Simulation of journal bearing friction in severe mixed lubrication – Validation and effect of surface smoothing due to running-in
TL;DR: In this paper, a simulation approach for journal bearings operating from hydrodynamic to mixed lubrication regime where severe metal-metal contact occurs is presented, and the simulation results in the form of Stribeck curves provide a solid base to prove the isothermal elastohydrodynamic simulation approach.
Journal ArticleDOI
Ball bearing skidding and over-skidding in large-scale angular contact ball bearings: Nonlinear dynamic model with thermal effects and experimental results
TL;DR: In this paper, a comprehensive model considering the kinematics of the bearing components, the Hertzian contact between the rolling elements and raceways, the interaction between the bearing and cage, the hydro-dynamic lubrication, and the thermal effects is introduced to study and forecast the over-skidding and skidding mechanisms.
Journal ArticleDOI
Edge loading and running-in wear in dynamically loaded journal bearings
David Emanuel Sander,Hannes Allmaier,Hans-Herwig Priebsch,Franz Markus Reich,Mario Witt,Athanassios Skiadas,O. Knaus +6 more
TL;DR: In this article, the authors focus on the beginning phase of hydrodynamic journal bearing life time when the first adaption of the contacting surfaces occurs, known as running-in.
Journal ArticleDOI
Analysis of the Journal Bearing Friction Losses in a Heavy-Duty Diesel Engine
Christoph Knauder,Hannes Allmaier,David Emanuel Sander,Stefan Salhofer,Franz Markus Reich,Theodor Sams +5 more
TL;DR: In this paper, the journal bearing friction losses of a state-of-the-art heavy-duty diesel engine are investigated for a large range of real world operating conditions, and the potential for further friction reduction with the use of ultra-low viscosity lubricants is explored.
References
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Journal ArticleDOI
Contact of Nominally Flat Surfaces
TL;DR: In this article, the authors proposed a new theory of elastic contact, which is more closely related to real surfaces than earlier theories, and showed how the contact deformation depends on the topography of the surface, and established the criterion for distinguishing surfaces which touch elastically from those which touch plastically.
Journal ArticleDOI
An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication
Nadir Patir,H. S. Cheng +1 more
Journal ArticleDOI
Rheology of non-Newtonian fluids: A new flow equation for pseudoplastic systems
TL;DR: In this article, the authors derived a flow equation for pseudoplastic flow that is associated with the formation and rupture of structural linkages in both aqueous and nonaqueous media.
Journal ArticleDOI
Global energy consumption due to friction in passenger cars
TL;DR: In this article, the authors presented calculations on the global fuel energy consumption used to overcome friction in passenger cars in terms of friction in the engine, transmission, tires, and brakes.
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