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High octane unleaded aviation gasoline

A lead-free aviation and vapor pressure technology, applied in the petroleum industry, liquid carbon-containing fuels, fuel additives, etc., can solve problems such as lack of fuel in engines and cavitation in air-sealed fuel pumps.

Active Publication Date: 2015-05-06
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Motor gasoline may evaporate in the fuel line causing vapor lock (air bubbles in the line) or fuel pump cavitation, starving the engine of fuel

Method used

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  • High octane unleaded aviation gasoline
  • High octane unleaded aviation gasoline
  • High octane unleaded aviation gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0087] experiment method

[0088] The following test methods are used to measure aviation fuel.

[0089] Engine Octane Number: ASTM D2700

[0090] Tetraethyl lead content: ASTM D5059

[0091] Density: ASTM D4052

[0092] Distillation: ASTM D86

[0093] Vapor pressure: ASTM D323

[0094] Freezing point: ASTM D2386

[0095] Sulfur: ASTM D2622

[0096] Net heat of combustion (NHC): ASTM D3338

[0097] Copper Corrosion: ASTM D130

[0098] Oxidation Stability - Potential Gum: ASTM D873

[0099] Oxidation Stability - Lead Precipitation: ASTM D873

[0100] Water Reaction - Volume Change: ASTM D1094

[0101] Detailed Hydrocarbon Analysis: ASTM 5134

Embodiment 1-4

[0103] The aviation fuel compositions of the present invention are blended as described below. While mixing, toluene having a MON of 107 (from VP Racing Fuels Inc.) and aniline (from Univar NV) were mixed.

[0104] In no particular order, isooctane (from Univar NV) and a narrow cut alkylate (from Shell Nederland Chemie BV) having the properties shown in the table below were poured into this mixture. Then, butanol (from Univar NV) was added followed by isopentane (from Matheson Tri-Gas, Inc.) to complete the blend.

[0105] Table 1

[0106] Properties of Narrow Cut Alkylates

Embodiment 1

[0108]

[0109]

[0110]

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PUM

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Abstract

High octane unleaded aviation fuel composition having high aromatics content and CHN content of at least 97.8wt%, less than 2.2 wt% of oxygen content, a T10 of at most 75°C, T40 of at least 75° C, a T50 of at most 105° C, a T90 of at most 135°C, a final boiling point of less than 190°C, an adjusted heat of combustion of at least 43.5 MJ / kg, a vapor pressure in the range of 38 to 49 kPa is provided.

Description

[0001] This application claims the benefit of US Patent Application Nos. 61 / 898,277, filed October 31, 2013, and 61 / 991,940, filed May 12, 2014. field of invention [0002] This invention relates to high octane unleaded aviation gasoline fuel, and more particularly to high octane unleaded aviation gasoline with low oxygen content. Background of the invention [0003] Aviation gasoline (Avgas) is aviation fuel used to propel aircraft in spark-ignited internal combustion engines. Aviation gasoline is distinct from motor gasoline (mogas), which is the everyday gasoline used in automobiles and some noncommercial light aircraft. Unlike motor gasoline (which has been formulated since the 1970s to allow the use of 3-way catalytic converters to reduce pollution), aviation gasoline contains tetraethyl lead (TEL), a chemical that prevents engine knock ( Detonation, detonation) non-biodegradable toxic substances used. [0004] Aviation gasoline fuel currently contains the additive te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/04C10L1/223C10L1/182C10L1/185C10L1/10
CPCC10L1/10C10L1/1608C10L1/1616C10L1/182C10L1/1824C10L1/223C10L2200/0423C10L2300/40C10L1/00C10L1/16C10L10/10C10L2270/023C10L2270/04C10L1/04C10L1/18
Inventor T·M·谢伊H·B·宾尼斯M·C·麦克奈伊
Owner SHELL INT RES MAATSCHAPPIJ BV
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