Method for improving the fuel economy of an internal combustion engine using fuel having hydroxyl-containing ester additive

Patent · Tue Oct 14 00:00:00 EDT 1986

OSTI ID:5036908

Shaub, H; Waddey, W E

A method is described of reducing fuel consumption in an automotive internal combustion engine. The method comprises operating the engine on a hydrocarbon fuel consisting essentially of a major amount of a liquid hydrocarbon of the gasoline boiling range, antioxidant, detergent, and/or corrosion inhibitor additive and from about 0.001 to about 2% by weight, based on the total weight of the fuel, of an additive which is an ester of an unsaturated monocarboxylic acid having about 12 to about 30 carbon atoms and a glycol or trihydric alcohol. The glycol is an alkane diol or oxa-alkane diol with the alkane being a straight chain hydrocarbon of about 2 to about 5 carbon atoms and the trihydric alcohol having a straight chain hydrocarbon structure of about 3 to about 6 carbon atoms. The ester has at least one free hydroxyl group, whereby the fuel including the ester additive effectively reaches the upper cylinder of the engine and thereby reduces the fuel consumed in the operation thereof.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4617026
• OSTI ID: 5036908
• Resource Relation: Patent File Date: Filed date 15 Aug 1984
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
03 NATURAL GAS
FUEL ADDITIVES
CHEMICAL COMPOSITION
GASOLINE
COMBUSTION
INTERNAL COMBUSTION ENGINES
FUEL ECONOMY
VEHICLES
ALKANES
ANTIOXIDANTS
BOILING POINTS
CARBOXYLIC ACID ESTERS
CORROSION INHIBITORS
DETERGENTS
FUEL CONSUMPTION
GLYCOLS
HYDROCARBONS
HYDROXYL RADICALS
QUANTITY RATIO
ADDITIVES
ALCOHOLS
CHEMICAL REACTIONS
EMULSIFIERS
ENERGY CONSUMPTION
ENGINES
ESTERS
FUELS
HEAT ENGINES
HYDROXY COMPOUNDS
LIQUID FUELS
ORGANIC COMPOUNDS
OXIDATION
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
RADICALS
SURFACTANTS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
WETTING AGENTS
330100* - Internal Combustion Engines
034000 - Natural Gas- Combustion
330800 - Emission Control- Alternative Fuels