The Bearing Oil Film Thickness of Single and Multi-Grade OilsPart 1: Experimental Results in a 3.8L Engine Pennzoil Products Company

Format:

Conference/Event

Author/Creator:

Deysarkar, Asoke K., author.

Conference Name:

SAE International Congress & Exposition (1988-02-29 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

Bearing oil film thickness (BOFT) measurements were obtained in the front main bearing of a 3.8-liter engine. Engine speed, engine load, and oil temperature were varied to determine the effect of these parameters on BOFT. For single-grade engine oils, the minimum oil film thickness (MOFT) correlated with the Sommerfeld number (Speed Viscosity/Load). In addition, it was also determined that the type of dispersant package used in a particular single-grade oil did not affect the oil's MOFT values.For multigrade oils (SAE 5W-30, 10W-30, 10W-40, and 15W-40) MOFT values could not be related to the Sommerfeld number with a high degree of correlation. Although high-shear, high-temperature (HSHT) viscosity was found to be important, the viscosity index (VI) improver type was also a factor in determining MOFT. The contribution of VI improver to MOFT was found to be dependent on the SAE grade and VI improver type

Notes:

Vendor supplied data

Publisher Number:

880681

Access Restriction:

Restricted for use by site license