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Fuel composition and its use

a technology of fuel composition and gasoline, applied in the field of gasoline composition, can solve the problems of engine damage and detrimental to overall performance, and achieve the effect of improving the flame speed of gasolin

Inactive Publication Date: 2011-12-22
SHELL OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]In another embodiment, the present invention provides a method of improving the flame speed of a gasoline which comprises adding to a major portion of a gasoline mixture, minor amount of the additive described above.

Problems solved by technology

Petroleum refineries are constantly faced with the challenge of continually improving their products to meet increasingly severe governmental efficiency and emission requirements, and consumers' desires for enhanced performance.
For example, engine manufacturers endeavor to inhibit to the maximum extent possible the phenomenon of auto-ignition which typically results in knocking and, potentially engine damage, when a fuel with insufficient knock-resistance is combusted in the engine.
This naturally requires compromise, as often times fuel properties or engine parameters that are desirable under certain speed / load conditions prove detrimental to overall performance at other speed / load conditions.

Method used

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  • Fuel composition and its use
  • Fuel composition and its use
  • Fuel composition and its use

Examples

Experimental program
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Effect test

examples 1-8

[0027]For examples 1-3, the additives were each added to Base Fuel 1 (Octane 91) at 20% in weight. These samples were then tested thrice for RON, MON, and flame speed. The average of three runs was tabulated in Table III. Similar blending method was used for examples 4-8 with Base Fuel 2 (Octane 91) at concentrations indicated in Table III.

TABLE IIIFlame-speedPressureAdditivein(inbomb(bar)weight %)atExampleBasein0.1 s after#blendGasolineignitionRONMON(R + M) / 21BaseNone17.3595.486.691.0Fuel 12Base20% of32.3397.081.889.4Fuel 1Cyclopropyl-acetylene3Base20% of26.5993.281.887.5Fuel 11-Pentyne4BaseNone21.6695.286.991.0Fuel 25Base 5% of25.0996.185.390.7Fuel 2Cyclopropyl-acetylene6Base10% of32.7496.384.690.4Fuel 2Cyclopropyl-acetylene7Base 5% of24.2295.385.690.4Fuel 21-Pentyne8Base10% of24.3694.984.989.9Fuel 21-Pentyne

[0028]Addition of molecules containing cyclopropyl and acetylenic group significantly enhanced the flame speed of the given fuel composition. The increase in cylinder pressure...

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Abstract

A method for increasing flamespeed of an internal combustion engine by burning a certain gasoline composition is provided. The gasoline composition contains (a) a major amount of a mixture of hydrocarbons in the gasoline boiling range and (b) a minor amount of at least one hydrocarbon having 5 to 12 carbon atoms and containing at least one cyclopropyl group and at least one acetylenic group.

Description

[0001]The present application claims the benefit of pending U.S. Provisional Patent Application Ser. No. 61 / 356,922, filed Jun. 21, 2010 the entire disclosure of which is hereby incorporated by reference.FIELD OF THE INVENTION[0002]The present invention relates to a gasoline composition and its use, particularly, in combustion engines.BACKGROUND OF THE INVENTION[0003]Spark initiated internal combustion gasoline engines require fuel of a minimum octane level which depends upon the design of the engine. Petroleum refineries are constantly faced with the challenge of continually improving their products to meet increasingly severe governmental efficiency and emission requirements, and consumers' desires for enhanced performance. For example, in producing a fuel suitable for use in an internal combustion engine, petroleum producers blend a plurality of hydrocarbon containing streams to produce a product that will meet governmental combustion emission regulations and the engine manufactu...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L1/10C10L1/04
CPCC10L10/00C10L1/1608C10L1/06C10L10/02C10L1/08C10L10/10
Inventor CRACKNELL, ROGER FRANCISJOIS, YAJNANARAYANA HALMUTHUR
Owner SHELL OIL CO
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