Influence of Engine Oil Viscosity on Piston Ring and Cam Face Wear Toyota Central R&D Labs., Incorporated

Format:

Conference/Event

Author/Creator:

Ohmori, Toshihide, author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (1993-10-18 : Philadelphia, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1993

Summary:

The influence of engine oil viscosity on the wear of piston rings and cam faces has been investigated by fired engine tests using a radioisotope (RI) tracer technique. High-temperature and high-shear-rate (HTHS; 150°C, 1O6 s-1) viscosities of the experimental oils prepared are 2.2, 2.4, 2.6 and 3.1 mPas. At an oil temperature of 90°C the wear of piston rings and cam faces did not increase, even if the HTHS viscosity was lowered down to 2.2 mPas. However, both piston rings and cam faces exhibited an increase in wear below 2.4 mPas at 130°C. It was also recognized that valve train wear did not significantly increase with reducing viscosity in the motored engine tests at a temperature of 50°C. From these test results, it was suggested that the oil with the HTHS viscosity of 2.6 mPas sufficiently demonstrates the antiwear performance equivalent to that with around 3.0 mPas for application to piston rings and cam faces

Notes:

Vendor supplied data

Publisher Number:

932782

Access Restriction:

Restricted for use by site license