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Modified kerosene composition

A technology of composition and kerosene, which is applied in the field of kerosene composition and fuel with improved antiknock performance, can solve the problems of no antiknock agent addition, etc., and achieve the elimination of fuel knock combustion, the improvement of limit knock power, and the induction period of spontaneous combustion prolonged effect

Active Publication Date: 2015-10-14
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the working conditions of the heavy oil piston engine are fixed, the tendency of knocking depends on the anti-knock performance of aviation kerosene. Adding anti-knock components can increase the octane number of gasoline (that is, the anti-knock property) has been widely used. However, due to various reasons, no one has added antiknock agents to aviation kerosene

Method used

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  • Modified kerosene composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] No. 3 jet fuel and xylene meeting GB6537-2006 are added into the container, wherein No. 3 jet fuel accounts for 87% of the total mass, and then mixed uniformly to form a modified kerosene composition. The flash point index of the modified kerosene composition is 40°C, the freezing point index is less than -70°C, used for bench test of ignition heavy oil piston engine. Compared with No. 3 aviation kerosene, the limit detonation power increased by 2.0%. The test results are shown in Table 1.

[0017] This test is a horizontally opposed four-cylinder water-cooled four-stroke aviation piston engine cylinder direct injection test prototype. In order to protect the safety of the engine, the experimental program selects the engine speed at 2500 rpm, the throttle opening at 36%, and the mixture gas concentration at 0.90 (power mixture concentration), and compares the maximum ignition advance angle height without knocking phenomenon when using different fuels. .

Embodiment 2

[0019] Add No. 3 jet fuel and isobutenylamide isoheptyl ester conforming to GB6537-2006 into the container, wherein No. 3 jet fuel accounts for 95% of the total mass, and then mix uniformly to form a modified kerosene composition. The modified kerosene composition The flash point index is 46°C, and the freezing point index is less than -66°C, which is used for bench test of ignition heavy oil piston engine. The test method is the same as in Example 1. Compared with No. 3 aviation kerosene, the limit detonation power has been improved by 6.5%. The test results are shown in Table 1.

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Abstract

The invention relates to a modified kerosene composition, which is composed of following substances, by mass, 80-99.99% of 3# jet fuel conforming to GB6537-2006, and 0.01-20% of an antiknock agent or a high-octane rating component. In the invention, by means of addition of the antiknock agent or the high-octane rating component in aviation kerosene, automatic acceleration of a combustion reaction can be inhibited so that combustion speed of fuel is limited within a normal range, namely, before a flame front coming, spontaneous combustion of hydrocarbons is inhibited so that the spontaneous combustion induction period of non-combusted mixed gas is prolonged or that the spreading speed of fire is increased, thereby eliminating knocking combustion of the fuel. The modified kerosene composition is available in a spark-ignition-type heavy oil piston engine, can improve the antiknock performance of the spark-ignition-type heavy oil piston engine, can increase power limit of the engine and can increase the knocking power limit of the piston engine by 6.5%.

Description

technical field [0001] The present invention relates to the field of fuels, in particular to a kerosene composition, more specifically to a fuel with improved anti-knock performance suitable for ignition type heavy oil piston engines, which improves the performance of kerosene on the original No. 3 jet fuel Knock resistance. Background technique [0002] At present, there are two main types of aviation fuel used by airlines in the world: aviation gasoline and aviation kerosene, which are respectively applicable to different types of aircraft engines. Aviation gasoline is the fuel mainly used in piston aircraft engines. The working principle of the aviation piston engine is the same as that of the general automobile engine, but the power is higher and the weight is lighter. Therefore, the quality requirements for aviation gasoline are similar to those for automobile gasoline. However, due to the low flash point and high volatility of aviation gasoline, it is difficult for a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/10C10L10/00C10L10/10
Inventor 许平利缪金妹杨苏平黄贤平张敏
Owner SINOPEC YANGZI PETROCHEM
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