Accession Number:

AD0698027

Title:

DEVELOPMENT OF A LABORATORY TECHNIQUE FOR DEFINING MECHANICAL SHEAR STABILITIES OF MULTI-GRADE ENGINE OILS.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY COATING AND CHEMICAL LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

• LePera,Maurice E.
• Pigliacampi,Jules

Report Date:

1969-11-01

Pagination or Media Count:

28.0

Abstract:

A program was initiated to define the mechanical shear stability of polymer-thickened lubricating oils in terms of a laboratory bench-scale technique. In subsequent evaluation studies using standard laboratory-type paint blendingmixing devices, a kinetic dispersion mill was found to induce shear degradation of polymer thickeners in multi-grade engine oils. Further refinement of this technique led to the establishing of a satisfactory correlation with single and multicylinder engine tests. Author

Descriptors:

• (*INTERNAL COMBUSTION ENGINES
• LUBRICANTS)
• (*LUBRICANTS
• PHYSICAL PROPERTIES)
• (*LABORATORY EQUIPMENT
• FEASIBILITY STUDIES)
• TEST METHODS
• TEST EQUIPMENT
• LUBRICANT ADDITIVES
• STABILITY
• DEGRADATION
• VISCOSITY
• POLYMERS
• SHEAR STRESSES
• PERFORMANCE(ENGINEERING)

Subject Categories:

• Lubricants and Hydraulic Fluids
• Test Facilities, Equipment and Methods
• Reciprocating and Rotating Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE