With the promotion of new fuels, the compatibility of gasoline fuel enhancer with them has become the key to ensuring vehicle performance and fuel system safety.
In the context of energy structure transformation and stricter environmental protection requirements, new fuels such as ethanol gasoline and biogasoline are gradually becoming popular due to their renewable and low-emission advantages. At the same time, gasoline fuel enhancer can improve fuel performance and engine operating conditions. However, when new fuels are mixed with enhancers, compatibility problems may occur due to differences in ingredients, affecting vehicle operating stability and fuel system life. Therefore, conducting compatibility research is of great significance to promoting the rational application of new fuels and enhancers.
Ethanol gasoline is a mixture of ethanol and gasoline in a certain proportion. Ethanol has the characteristics of high octane number and strong hydrophilicity, which can improve the anti-knock performance of fuel, but it is easy to absorb water and cause phase separation. Biogasoline is made from animal and plant oils or waste organic matter through esterification, hydrogenation and other processes. It has a complex composition and contains substances such as fatty acid methyl esters. Its oxidation stability and low-temperature fluidity are different from those of traditional gasoline. Gasoline fuel enhancers usually contain detergents, anti-knock agents, antioxidants and other ingredients, which are designed to improve the combustion performance of fuel and clean the inside of the engine. When these ingredients meet new fuels, physical or chemical reactions may occur, which will affect compatibility.
When ethanol gasoline is mixed with gasoline fuel enhancers, the main problems faced are phase separation and increased corrosiveness. The hydrophilicity of ethanol makes it easy to absorb moisture in the air. When the water content exceeds a certain threshold, it will separate from gasoline, causing fuel stratification and affecting the normal operation of the engine. The additives in some enhancers may accelerate the corrosion of ethanol on metal parts. For example, when ethanol is combined with chlorine-containing additives, it will corrode metal parts such as fuel pumps and fuel injectors. In addition, the high solubility of ethanol may cause some components in the enhancer to dissolve excessively, change the original performance of the enhancer, and reduce its protective effect on the engine.
When biogasoline is mixed with gasoline fuel enhancers, oxidation stability and low temperature performance are the main challenges. Fatty acid methyl esters in biogasoline are prone to oxidation reactions, generating peroxides and acids, which shorten the shelf life of fuel, while antioxidant components in some enhancers may not be able to effectively inhibit the oxidation process of biogasoline. In low-temperature environments, biogasoline has poor low-temperature fluidity and is prone to crystallization and condensation. If the enhancer cannot improve its low-temperature performance, it may cause fuel filter blockage, affecting vehicle startup and normal operation. In addition, the complex components of biogasoline may also react with the detergent in the enhancer, reducing the detergent's ability to clean engine carbon deposits.
To improve the compatibility of new fuels with gasoline fuel enhancers, we can start from component optimization and process improvement. Add anti-emulsifiers and corrosion inhibitors to the enhancer formula to enhance tolerance to moisture and inhibit metal corrosion; select more efficient antioxidants and low-temperature flow improvers to improve the stability and low-temperature performance of biogasoline. In addition, by adjusting the production process of new fuels, strictly controlling the water content in ethanol gasoline, optimizing the refining process of biogasoline, and reducing the impurity content, the compatibility with enhancers can also be enhanced. For example, membrane separation technology is used to remove water from ethanol gasoline, and hydroprocessing technology is used to improve the quality of biogasoline.
Scientific testing and evaluation are important means to determine the compatibility of new fuels and enhancers. By simulating the actual use environment, phase separation tests, corrosion tests, oxidation stability tests and other experiments are carried out. The phase separation test can observe whether the mixed fuel is stratified by changing the temperature and water content; the corrosion test uses metal test pieces immersed in the mixed fuel to evaluate the degree of corrosion to the metal; the oxidation stability test uses accelerated oxidation experiments to determine the oxidation induction period of the mixed fuel. In addition, the engine bench test and real vehicle road test can be used to comprehensively evaluate the impact of the mixed fuel on engine performance, fuel consumption, emissions and other aspects, providing data support for compatibility research.
The compatibility of gasoline fuel enhancer with new fuels such as ethanol gasoline and biogasoline is affected by many factors, and there are problems such as phase separation, corrosion, and oxidation stability. Compatibility can be effectively improved by optimizing the formula, improving the process and scientific testing and evaluation. With the expansion of the application scope of new fuels and the continuous development of enhancer technology, it is necessary to further study the interaction mechanism between the two in the future, develop enhancer products that are more suitable for new fuels, and provide technical support for the green and efficient development of the automotive industry.
