Aviation fuel

Inactive Publication Date: 2013-03-28
BROCK NANNESTAD THEIS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a type of jet aviation fuel made from one or more special compounds. These compounds have a specific formula and are made from aliphatic carbon chains. This invention also covers containers and aerial vehicles that use this special fuel. The technical effect of this invention is that it provides a more efficient and effective fuel for jet aviation, which can help to improve the overall performance and reliability of the aircraft.

Problems solved by technology

Aviation fuel specifications are among the most restrictive among all fuel specifications, reflecting the combination of extreme temperatures encountered during flight, and the consequence of failure characteristic of the aviation industry.
A car engine failing may be a major nuisance whereas the failure of a plane engine can lead to disaster.
Currently, offerings in bio-fuels are either bio-ethanol, which do not live up to current engine technology as ethanol is hygroscopic, cannot form homogenous mixtures with jet aviation fuel and that lastly have an energy density that is approximately 70% of current jet aviation fuel.
The long chain esters composing bio-Diesel are only partially compatible with current use in jet aviation, not only due to unfavourable physical properties, but also due to the fact that ester hydrolysis can lead to clogging of fuel lines due to precipitation of fatty acids.
Further detracting from possible use in jet aviation applications are the fact that fatty acids are surface active agents, and can thus act as surfactants in situations where this in decidedly unwanted.
Thus current regulations limit the allowed content of fatty acid esters to less than 5 ppm in fuel pipeline systems—used in e.g. larger airports.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0069]

Propyl butyl ether15%Ethyl heptyl ether10%Butyl decyl ether25%Methyl decyl ether25%

example 2

[0070]

Fuel according to specification Jet B75%Formulation example 125%

example 3

[0071]

Fuel according to specification Jet B25%Formulation example 175%

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Abstract

A jet aviation fuel based on aliphatic ethers is disclosed wherein the fuel comprises a compound according to the invention, a mixture of compounds according to the invention, a mixture of the pure or mixed aliphatic ethers admixed with conventional jet aviation fuel, or a mixture of said ethers with conventional hydrocarbon fuel, thus giving a product conforming to a jet aviation fuel standard.

Description

[0001]This application is an international application claiming priority from Danish patent application no. PA2010 00471. All patent and non-patent references cited in the present application, are hereby incorporated by reference in their entirety.FIELD OF INVENTION[0002]The present invention relates to the field of fuels, specifically aviation fuels for use in jet engines.BACKGROUND OF INVENTION[0003]Aviation fuel specifications are among the most restrictive among all fuel specifications, reflecting the combination of extreme temperatures encountered during flight, and the consequence of failure characteristic of the aviation industry. A car engine failing may be a major nuisance whereas the failure of a plane engine can lead to disaster. As a consequence of these fuel specifications are stringent, rarely changed and in general based on a very cautious approach towards modification. The same viewpoint is reflected in implementation of e.g. new engine technologies be that jet or in...

Claims

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Application Information

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IPC IPC(8): C10L1/185
CPCC10L1/1852C10L2200/043C10L2270/04C10G2400/08C10G2300/301C10G2300/308C10L1/02
InventorBROCK-NANNESTAD, THEISVINTHER HANSEN, ANNE SOPHIE
OwnerBROCK NANNESTAD THEIS