Browse Publications Technical Papers 2003-01-1967
2003-05-19

Influence of Polyalkylmethacrylate Viscosity Index Improvers on the Efficiency of Lubricants 2003-01-1967

The efficiency of lubricated machine elements such as transmissions, crankcase engines, and hydraulic pumps depends strongly on the friction properties of the lubricant employed. For the design of modern, highly efficient lubricants it is thus essential to understand the influence of the components of the lubricating fluid in terms of film formation and consequent friction.
The influence of Polyalkylmethacrylate (PMA) Viscosity Index Improvers on those important parameters has been studied by means of optical interferometry and friction testing. Low friction coefficients and positive contributions to the boundary film thickness of the lubricant were obtained when composition and architecture of the polymeric VII were appropriately designed.
Results from bench tests measuring the oils' equilibrium temperature in a bearing (ARKL test) and their torque transmitting efficiency (FZG gear test) indicate that PMA Viscosity Index Improvers provide a tool to formulate lubricants with tailored friction properties and improved efficiency.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Steric Effects on Tribochemical Reactivity in Detergent-Containing Lubricants under Nanoconfinement

2017-01-2347

View Details

JOURNAL ARTICLE

Frictional Properties of Molybdenum-Based Lubricating Oil Additives Using Green Chemistry

2011-01-2131

View Details

TECHNICAL PAPER

The Evaluation of the Fuel-Economy Performance of Low-Viscosity Drive-Train Lubricants and the Development of Oils with Improved Fatigue Life

2004-01-3029

View Details

X