Effect of carbon coating on scuffing performance in diesel fuels

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Low-sulfur and low-aromatic diesel fuels are being introduced in order to reduce various types of emissions in diesel engines to levels in compliance with current and impending US federal regulations. The low lubricity of these fuels, however, poses major reliability and durability problems for fuel injection components that depend on diesel fuel for their lubrication. In the present study, the authors evaluated the scuff resistance of surfaces in regular diesel fuel containing 500 ppm sulfur and in Fischer-Tropsch synthetic diesel fuel containing no sulfur or aromatics. Tests were conducted with the high frequency reciprocating test rig (HFRR) using 52100 steel ... continued below

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27 p.

Creation Information

Ajayi, O. O.; Alzoubi, M. F.; Erdemir, A. & Fenske, G. R. June 29, 2000.

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Description

Low-sulfur and low-aromatic diesel fuels are being introduced in order to reduce various types of emissions in diesel engines to levels in compliance with current and impending US federal regulations. The low lubricity of these fuels, however, poses major reliability and durability problems for fuel injection components that depend on diesel fuel for their lubrication. In the present study, the authors evaluated the scuff resistance of surfaces in regular diesel fuel containing 500 ppm sulfur and in Fischer-Tropsch synthetic diesel fuel containing no sulfur or aromatics. Tests were conducted with the high frequency reciprocating test rig (HFRR) using 52100 steel balls and H-13 tool-steel flats with and without Argonne's special carbon coatings. Test results showed that the sulfur-containing fuels provide about 20% higher scuffing resistance than does fuel without sulfur. Use of the carbon coating on the flat increased scuffing resistance in both regular and synthetic fuels by about ten times, as measured by the contact severity index at scuffing. Scuffing failure in tests conducted with coated surfaces did not occur until the coating had been removed by the two distinct mechanisms of spalling and wear.

Physical Description

27 p.

Notes

OSTI as DE00759060

Medium: P; Size: 27 pages

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  • 2000 International Joint Tribology Conference, Seattle, WA (US), 10/01/2000--10/04/2000

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  • Report No.: ANL/ET/CP-101812
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 759060
  • Archival Resource Key: ark:/67531/metadc711403

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  • June 29, 2000

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 10, 2017, 6:39 p.m.

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Ajayi, O. O.; Alzoubi, M. F.; Erdemir, A. & Fenske, G. R. Effect of carbon coating on scuffing performance in diesel fuels, article, June 29, 2000; Illinois. (digital.library.unt.edu/ark:/67531/metadc711403/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.