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Aviation alternative fuel blending method for improving ignition performance of heavy oil piston engine

A piston engine and aviation fuel technology, which is applied in the direction of fuel, fuel additives, liquid carbon-containing fuels, etc., can solve the problems that cannot reduce the fluidity, combustion compatibility, and lubricity of aviation fuels

Active Publication Date: 2021-05-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while improving ignition performance, aviation fuel fluidity, combustibility, compatibility, and lubricity cannot be reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Blend 0.5% of volatility improver methylcyclopentane, 1% of methylcyclohexane, 1% of ethylcyclohexane into Fischer-Tropsch aviation fuel; Cyclohexane 3%; ignition delay improving agent n-heptane 2%; atomization performance improving additives ethylbenzene 2% and propylbenzene 3%. The resulting improved aviation fuel is used in piston engines, the low-temperature volatilization performance is increased by 30-50%, the lower limit of the flammable boundary is reduced by 50-100%, the atomized particle size and liquid film length are reduced by 3%-5%, and the ignition delay time is shortened by 35%. %-55%.

Embodiment 2

[0059] Mix 1% methylcyclopentane, 1.5% methylcyclohexane, 1% ethylcyclohexane, 1% volatility improver, and 1.5% propylcyclopentane, 1.5% propylcyclopentane, propylene Cyclohexane 3%; Ignition delay improving agent n-heptane 1%, n-nonane 2%; atomization performance improving additive ethylbenzene 2%, propylbenzene 3%. The improved aviation fuel thus obtained is used for piston engines, and the low-temperature volatilization performance is increased by 30-50%, the lower limit of the flammable boundary is reduced by 50-100%, and the atomized particle size and liquid film length are reduced by 3%-5%. The ignition delay time is shortened by 30%-45%.

Embodiment 3

[0061] In biomass Fischer-Tropsch aviation fuel, blend 0.5% of volatility improver methylcyclopentane, 1% of methylcyclohexane, 2% of ethylcyclohexane; 1% of flammable boundary improver propylcyclopentane, Propylcyclohexane 5%; ignition delay improving agent n-heptane 2%, n-nonane 1%; atomization performance improving additive ethylbenzene 3%, propylbenzene 2%. The resulting improved aviation fuel is used in piston engines, the low-temperature volatility is improved by 60-100%, the lower limit of the flammable boundary is reduced by 50-100%, the atomized particle size and liquid film length are reduced by 5%-15%, and the ignition delay time is shortened by 30%. %-55%.

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PUM

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Abstract

The invention relates to an aviation alternative fuel blending method for improving ignition performance of a heavy oil piston engine, which comprises the following steps: adding a component (1), a component (2), a component (3) or a combination thereof into an aviation fuel, the component (1) being selected from one or more of methylcyclopentane, methylcyclohexane and ethylcyclohexane; the component (2) is selected from one or more of propyl cyclopentane and propyl cyclohexane; and the component (3) is selected from one or more of C7-C10 paraffins. The invention also discloses an aviation fuel additive. The ignition performance of the aviation piston engine is remarkably improved, atomization, volatility, cetane number, ignition delay, ignition energy, heat value and ignition-extinguishing boundary are balanced, and meanwhile the working condition operation range is expanded.

Description

technical field [0001] The invention belongs to the field of aviation fuel, in particular to an aviation alternative fuel blending method for improving the ignition performance of a heavy oil piston engine. The invention also relates to aviation fuel additives and aviation fuel oil compositions and applications thereof. Background technique [0002] With the diversified demand for green aviation and energy, new alternative fuel application technology has become a key factor in carbon emission reduction and energy security. There are two main types of aviation alternative fuel utilization technologies, one is based on the existing aero-engine technology, using new fuels to replace traditional aviation kerosene; the other is for the energy needs of new aero-engines. With the opening of the low-altitude field, aviation piston engines, especially heavy fuel aviation piston engines, have been developed rapidly, because they meet new airworthiness safety standards and can reduce ...

Claims

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Application Information

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IPC IPC(8): C10L1/04C10L1/16C10L10/00
CPCC10L1/04C10L1/1608C10L10/00
Inventor 杨晓奕刘子钰
Owner BEIHANG UNIV
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