Method and lubricant composition for providing improved friction reduction

Patent · Tue Oct 14 00:00:00 EDT 1986

OSTI ID:5074224

Shaub, H

This patent describes a method of reducing friction in an internal combustion engine comprising lubricating the engine using a lubricating oil composition containing an effective friction reducing amount of an additive. The additive is an ester of a polycarboxylic acid with a glycol or glycerol and from about 0.1 to about 20 parts by weight, based on the weight of lubricating oil composition of an hydroxyl containing ashless dispersant having a high molecular weight aliphatic hydrocarbon oil solubilizing group attached thereto. The improvement described here comprises the dispersant containing from about 0.35 to about 1.8 millimoles of free hydroxyl groups per gram of dispersant.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4617134
• OSTI ID: 5074224
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500 -- Petroleum-- Products & By-Products
33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ADDITIVES
ALCOHOLS
CARBOXYLIC ACID ESTERS
CHEMICAL COMPOSITION
ESTERS
FRICTION
GLYCEROL
GLYCOLS
HYDROXY COMPOUNDS
HYDROXYL RADICALS
ICE
LUBRICANTS
LUBRICATING OILS
LUBRICATION
MOLECULAR WEIGHT
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
QUANTITY RATIO
RADICALS
SURFACTANTS