Nanolubricants for diesel engines: Related emissions and compatibility with the after-treatment catalysts

• Published in: Tribology international 2014-04, Vol.72, p.198-207
• Main Authors: Castillo Marcano, S.J., Bensaid, S., Deorsola, F.A., Russo, N., Fino, D.
• Format: Article
• Language: English
• Subjects: After-treatment catalysts; Catalysis; Catalysts; Diesel engine; Diesel engines; Durability; Equivalence; Lubricants; Molybdenum disulfide; Nanostructure; Water temperature
• ISSN: 0301-679X; 1879-2464
• DOI: 10.1016/j.triboint.2013.10.018

The effect of the lubricant oil additivated with MoS2 nanopowders was assessed through a set of full-scale tests on a real diesel engine – several engine points and cooling water temperatures were investigated for both a reference oil and a MoS2-additivated one. The emission abetment efficiency of the DOC and DPF reduces the gas and solid pollutants obtained with the MoS2-additivated oil to levels equivalent to the ones reached with the reference oil. An endurance test of 100h (equivalent to 10,000km) proved the stability of the catalytic system and the suitability of commercial after-treatment catalysts to cope with the emission modifications induced by the inclusion of nanoadditives in the oil matrix. •MoS2 nanoparticles have been successfully obtained for lubricant applications.•A slight increase of HC, CO and soot emissions with an MoS2-containing oil occurred.•The DOC and DPF reactors reduced the pollutants at reference oil levels.•An endurance test of 100h proved the stability of the catalytic system.