Zinc dialkyldithiophosphates (ZDDPs) provide efficient and effective anti-wear, anti-oxidation and anti-corrosion properties in engine oil formulations. Two kinds of formulated engine oils were investigated including Oil 1 containing secondary ZDDPs, and Oil 2 containing primary/secondary ZDDPs. It revealed that different types of ZDDPs exhibits different volatilities and have different effects in the Sequence IIIG test. ZDDPs with higher molecular weight alcohols exhibit a relatively low volatility. The combination of primary/secondary ZDDPs exhibits higher phosphorus volatility in the Sequence IIIG, but have the same anti-wear protective behavior than that of the secondary ZDDPs in field tests. The field test results of phosphorus volatility and viscosity increase show encouraging agreement with the results of the Sequence IIIG test. However, the field test exhibits lower phosphorus volatility than the Sequence IIIG engine test. Results of used oil analyses showed that the wear elements, viscosity, TAN increase and TBN retention were in acceptable limits at the end of the field test.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    The Effect of ZDDP Type on Phosphorus Volatility: Engine Oil Performance on Sequence IIIG and Field Tests


    Additional title:

    Sae Technical Papers


    Contributors:
    Li, Guiyun (author) / Wang, Linchun (author) / Wang, Liping (author) / Xu, Xiaohong (author)

    Conference:

    SAE/KSAE 2013 International Powertrains, Fuels & Lubricants Meeting ; 2013



    Publication date :

    2013-10-14




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :


    The Effect of ZDDP Type on Phosphorus Volatility: Engine Oil Performance on Sequence IIIG and Field Tests

    Wang, L. / Li, G. / Xu, X. et al. | British Library Conference Proceedings | 2013


    Low Volatility ZDDP Technology: Part 2 - Exhaust Catalysts Performance in Field Applications

    Bardasz, E.A. / Schiferl, E. / Nahumck, W. et al. | British Library Conference Proceedings | 2007


    Low volatility ZDDP technology: part 2 - exhaust catalysts performance in field applications

    Bardasz,E.A. / Schiferl,E. / Nahumck,W. et al. | Automotive engineering | 2007


    Low Volatility ZDDP Technology: Part 2 - Exhaust Catalysts Performance in Field Applications

    O'Neill, Ann / Hubbard, Carolyn P. / Uy, Dairene et al. | SAE Technical Papers | 2007


    Low volatility ZDDP technology: part 1 - engines and lubricant performance in field applications

    Bardasz,E.A. / Schiferl,E. / Nahmuck,W. et al. | Automotive engineering | 2007