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Lubricating oil influence on exhaust hydrocarbon emissions from a gasoline fueled engine

Authors
Journal
Tribology International
0301-679X
Publisher
Elsevier
Publication Date
Volume
44
Issue
12
Identifiers
DOI: 10.1016/j.triboint.2011.07.003
Keywords
  • Lubricants
  • Hydrocarbon Emissions
  • Internal Combustion Engines
  • Viscosity

Abstract

Abstract Engine exhaust hydrocarbon emissions have been investigated for different lubricating oils, using gasoline as fuel. Six samples of lubricants have been tested: synthetic SAE 5W30 and SAE 5W40, semi-synthetic SAE 15W40 and SAE 20W50, and mineral SAE 15W40 and SAE 20W50. Experiments were carried out in a production engine mounted on a bench test dynamometer, varying engine load and speed in the range from 1500 to 6000 rev/min. The results demonstrate the influence of lubricant viscosity and base oil on hydrocarbon emissions. The synthetic oils showed the lowest hydrocarbon emission levels, especially in the low engine speed range.

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