Next Article in Journal / Special Issue
Experimental Measurements of Journal Bearing Friction Using Mineral, Synthetic, and Bio-Based Lubricants
Previous Article in Journal / Special Issue
Frictional Characteristics of a Small Aerostatic Linear Bearing
Article Menu

Export Article

Open AccessArticle
Lubricants 2015, 3(2), 142-154; doi:10.3390/lubricants3020142

Analysis of the Journal Bearing Friction Losses in a Heavy-Duty Diesel Engine

1
Virtual Vehicle Research Center, Inffeldgasse 21A, 8010 Graz, Austria
2
AVL LIST GmbH, Hans-List-Platz 1, 8020 Graz, Austria
3
Institute of Internal Combustion Engines and Thermodynamics, Graz University of Technology, Inffeldgasse 19, 8010 Graz, Austria
*
Author to whom correspondence should be addressed.
Academic Editors: Romeo P. Glovnea and Michel Fillon
Received: 15 January 2015 / Revised: 27 February 2015 / Accepted: 9 March 2015 / Published: 2 April 2015
(This article belongs to the Special Issue Friction and Lubrication of Bearings)
View Full-Text   |   Download PDF [925 KB, uploaded 2 April 2015]   |  

Abstract

Internal combustion engines (ICE) for the use in heavy-duty trucks and buses have to fulfil demanding requirements for both vehicle efficiency as well as for emission of greenhouse gases. Beside the piston assembly the journal bearings are among the largest contributors to friction in the ICE. Through a combination of measurements and validated simulation methods 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. To this task recently developed and extensively validated simulation methods are used together with realistic lubricant models that consider the Non-Newtonian behaviour as well as the piezoviscous effect. In addition, the potential for further friction reduction with the use of ultra-low viscosity lubricants is explored. The results reveal a potential of about 8% friction reduction in the journal bearings using a 0W20 ultra-low viscosity oil with an HTHS-viscosity (The HTHS-viscosity is defined as the dynamic viscosity of the lubricant measured at 150 °C and at a shear rate of 106 s View Full-Text
Keywords: journal bearing; friction; measurement; simulation; test rig journal bearing; friction; measurement; simulation; test rig
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Knauder, C.; Allmaier, H.; Sander, D.E.; Salhofer, S.; Reich, F.M.; Sams, T. Analysis of the Journal Bearing Friction Losses in a Heavy-Duty Diesel Engine. Lubricants 2015, 3, 142-154.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Lubricants EISSN 2075-4442 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top