Tribology Letters

, Volume 50, Issue 2, pp 279–285 | Cite as

Effect of Reciprocation Frequency on Friction and Wear of Vibrating Contacts Lubricated with Soybean-Based B100 Biodiesel

  • Dario A. Constantine
  • Yuanyuan Wang
  • Elon J. TerrellEmail author
Original Paper


The use of renewable, bio-based fuels has become increasingly widespread in recent years, with a major example being biodiesel, a bio-derived alternative to Number 2 diesel fuel. The increased usage of biodiesel gives rise to an augmented need to understand its tribological effects on critical engine components. This study focused on determining the tribological performance of soybean-based B100 (i.e., pure) biodiesel within a fuel injector with varying oscillating frequency by performing a series of linear reciprocating tribological tests of biodiesel-lubricated interfaces with varying reciprocating frequency. Comparison of friction coefficient variation with reciprocating frequency indicated a transition from boundary lubrication to hydrodynamic lubrication as the frequency increased, while hysteresis loop and energy loss observations showed a transition between full stick and partial slip contact with increasing frequency. However, observations of induced wear showed the wear to increase with increasing frequency, most likely due to the augmented number of sliding cycles as well as an increased degree of interfacial slip.


Biodiesel lubrication Stribeck curve Linear low-amplitude reciprocation Wear Energy loss 


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Dario A. Constantine
    • 1
  • Yuanyuan Wang
    • 1
  • Elon J. Terrell
    • 1
    Email author
  1. 1.Department of Mechanical EngineeringColumbia UniversityNew YorkUSA

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