IMPROVED FUEL ECONOMY THROUGH LUBRICANT TECHNOLOGY IN MEDIUM-SPEED RAILROAD DIESEL ENGINES

Reducing fuel consumption will substantially reduce railroad operating costs. Several means of reducing fuel consumption by reducing engine friction were evaluated in a full-scale 2240 kW (3000 hp) two-stroke locomotive engine operating under steady-state conditions. These included reduced lubricant viscosity and the use of friction-modifier crankcase lubricant additives. The steady-state data were combined using known duty cycles to give predicted savings in service. A 2.5 percent reduction in fuel consumption was predicted by increasing the coolant temperature by 13.9 deg C (25 deg F), for a typical railroad medium-duty cycle. Over this duty cycle, a multigrade SAE 20W-40 lubricant used 1 percent less fuel than an SAE 40. No fuel savings were measured for an SAE 40 lubricant formulated from high-instead of medium-viscosity-index base stocks. Neither lubricant soluble nor insoluble (dispersed solid) friction-modifier additives gave significant fuel savings.

  • Corporate Authors:

    American Society of Lubricating Engineers

    838 Busse Highway
    Park Ridge, IL  United States  60068
  • Authors:
    • Logan, M R
  • Publication Date: 1984-4

Media Info

  • Pagination: p. 225-233
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00389849
  • Record Type: Publication
  • Source Agency: British Railways
  • Files: TRIS
  • Created Date: Oct 30 1984 12:00AM