The Effect of ZDDP Type on Phosphorus Volatility: Engine Oil Performance on Sequence IIIG and Field Tests PetroChina Lanzhou Lube Oil R&D Institute

Format:

Conference/Event

Author/Creator:

Wang, Wang, author.

Contributor:

Li, Guiyun

Wang, Linchun

Xu, Xiaohong

Conference Name:

SAE/KSAE 2013 International Powertrains, Fuels & Lubricants Meeting (2013-10-21 : Seoul, South Korea)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

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

Notes:

Vendor supplied data

Publisher Number:

2013-01-2570

Access Restriction:

Restricted for use by site license