Diesel Fuel Additive Composition for Oxidation Stability and Engine Performance
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Solution Overview
Problem
Standard-grade non-road gas oils face issues with stability during storage and use, particularly under high pressures or temperatures, leading to fouling of filters and injection systems, and low-temperature performance problems due to insufficient antioxidants and metal degradation.
Innovation Solution
A high-grade additive composition comprising metal deactivators, hindered phenol antioxidants, dispersants, acidity neutralizers, low-temperature performance additives, and biocides is introduced to enhance the properties of gas oils, including oxidation resistance, storage stability, and engine performance, reducing injector fouling and filter clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fatty acid methyl esters (FAME) are added to improve renewable content and engine performance, then engine performance is improved, but oxidation stability and storage stability deteriorate due to insufficient antioxidants and metal extraction
Solution Approach 1:
The patent applies composite materials by combining multiple additive components (metal deactivators, hindered phenol antioxidants, dispersants, acidity neutralizers, low-temperature performance additives, and biocides) into a synergistic package. This composite additive system simultaneously addresses oxidation stability, metal extraction, and engine performance without compromising any single property.
Solution Approach 2:
The patent changes the chemical parameters of the fuel system by introducing specific concentrations of antioxidants and metal deactivators. The additive package modifies the oxidation resistance parameters and metal interaction parameters of the FAME-containing fuel, transforming it from unstable to stable while maintaining performance.
2Quantity of substance
If fatty acid methyl esters (FAME) are added to improve renewable content, then renewable content is increased, but filter fouling and injection system fouling increase due to oxidation and metal extraction
Solution Approach 1:
The patent converts the harmful oxidation by-products and metal extraction products into beneficial controlled substances. The dispersants and metal deactivators transform potentially harmful oxidation products and metal-FAME complexes into stable, soluble forms that prevent filter fouling and injection system contamination while maintaining the renewable content benefit.
Solution Approach 2:
The additive package acts as an intermediary between the FAME and the fuel system components (filters, injection systems). The dispersants and metal deactivators mediate the interaction, preventing direct contact between harmful oxidation products/metal complexes and the fuel system, thereby eliminating fouling while preserving renewable content.
3Duration of action of stationary object
If prolonged storage is required to meet seasonal specifications, then seasonal specification compliance is achieved, but low-temperature performance deteriorates due to crystallization and sedimentation
Solution Approach 1:
The patent applies preliminary action by adding low-temperature performance additives to the fuel before storage. These additives pre-condition the fuel to prevent crystallization and sedimentation during prolonged storage, ensuring that when the fuel is eventually used in cold conditions, it maintains proper flow characteristics and low-temperature performance.
Solution Approach 2:
The additive package provides beforehand cushioning against the harmful effects of prolonged storage. The antioxidants prevent oxidation-induced sedimentation, while the low-temperature additives cushion against crystallization, protecting the fuel's low-temperature performance throughout the storage period and ensuring ease of operation when needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The additive composition significantly improves the stability and performance of gas oils, reducing injector fouling, power loss, and pollutant emissions, while maintaining stability across various temperatures and storage conditions.
Implementation Method 1
the antioxidants incorporated in the FAME are not always sufficient to stabilize the product and do not make it possible to combat the action of metals (catalysts of oxidation and degradation phenomena)
Implementation Method 2
at least one metal deactivator or chelating agent
Implementation Method 3
at least one antioxidant of the hindered phenol type (alkylphenol)
Implementation Method 4
at least one dispersant
Implementation Method 5
at least one biocide
Implementation Method 6
problems of crystallization, sedimentation, filter plugging etc.
Data Source
AI summary
An additive composition improves the stability and the engine performances of gas oils, including gas oils of the non-road type in compliance with the decree of 10 Dec. 2010. The additive composition includes:at least one metal deactivator or chelating agent,at least one antioxidant of the hindered phenol type (alkylphenol),at least one dispersant and/or detergent, andat least one metal passivator,wherein the composition includes improved properties, in particular relative to the oxidation resistance, storage stability, thermal stability, reduction in fouling of the injectors, reduction in loss of power, reduction in the tendency of filters to clog.