Diesel engine oil soots from different engines have the appearance of carbon black but contain significant concentrations of engine oil additive elements. Evaluation of the soots in 4-ball wear tests supported the theory that the soots reduce the antiwear additive effectiveness by preferentially adsorbing the active antiwear additive components before they can form the essential antiwear surface coating rather than removing the surface coatings by abrasion after they are formed. Engine load and exhaust gas recirculation have large effects on the soot prowear characteristics, whereas engine refinements, engine make and oil type have lesser effects. No antiwear additives were found more effective than the currently used zinc dialkyl-dithiophosphates. Several preferential adsorber additives were effective in simple blends but not in fully formulated engine oils.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Soots from Used Diesel Engine Oils - Their Effects on Wear as Measured in 4-Ball Wear Tests


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE International Congress and Exposition ; 1981



    Publication date :

    1981-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Soots from Used Diesel Engine Oils - Their Effects on Wear as Measured in 4-Ball Wear Tests

    Rounds,F.G. / General Motors Res.Lab.,US | Automotive engineering | 1981


    Infrared absorptivities of several diesel engine soots; application to the analysis of soot in used engine oils

    Ryason,P.R. / Hillyer,M.J. / Hansen,T.P. et al. | Automotive engineering | 1994


    Infrared Absorptivities of Several Diesel Engine Soots; Application to the Analysis of Soot in Used Engine Oils

    Hillyer, M. J. / Ryason, P. R. / Hansen, T. P. | SAE Technical Papers | 1994


    Diesel engine wear reduced

    Engineering Index Backfile | 1954


    Anti-Wear Properties of Engine Oils-Effects of Oil Additives on Valve Train Wear

    Chida, Hitoshi / Otsubo, Katsuji / Torii, Kyozo et al. | SAE Technical Papers | 1977