Investigation on Oxidation Stability of Engine Oils Using Laboratory Scale Simulator Toyota Central R&D Labs., Incorporated

Format:

Conference/Event

Author/Creator:

Moritani, Hiroshi, author.

Conference Name:

1995 SAE International Fall Fuels and Lubricants Meeting and Exhibition (1995-10-16 : Toronto, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1995

Summary:

The purposes of this paper are to develop a new laboratory oxidation stability testing method and to clarify factors relative to the viscosity increase of engine oil.Polymerized products, obtained from the oil after a JASO M333-93 engine test, were found to consist mainly of carboxyl, nitrate and nitro compounds and to increase the oil viscosity.A good similarity between the JASO M333-93 test and the laboratory simulation test was found for the polymerized products. The products were obtained not by heating oil only in air but by heating oil while supplying a synthetic blowby gas consisting of fuel pyrolysis products, NO, SO2 and air. The laboratory test has also revealed that the viscosity increase depends on oil quality, organic Fe content and hydrocarbon composition in the fuel. Moreover, it has been found that blowby gas and organic Fe accelerate ZnDTP consumption and that aromatics concentration in the fuel correlates with the viscosity increase of oil

Notes:

Vendor supplied data

Publisher Number:

952528

Access Restriction:

Restricted for use by site license