Diesel Fuel Additive System for Soot Reduction and Phase Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Diesel fuel additives like dimethyl carbonate (DMC) effectively reduce soot emissions but face issues such as phase separation at low temperatures and decreased cetane number, leading to performance and efficiency problems.
Innovation Solution
A diesel fuel composition containing dimethyl carbonate and a multifunctional additive, which includes a phase stabilizer, cetane improver, solubilizer, corrosion inhibitor, lubricity improver, and cold flow improver, formulated to prevent phase separation and enhance cetane number, thereby improving performance and reducing soot emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If dimethyl carbonate (DMC) is added to diesel fuel to reduce soot emissions, then soot emission is reduced, but phase separation occurs at low temperatures and cetane number decreases
Solution Approach 1:
The patent introduces a co-solvent (alcohol or ether) as an intermediary substance to mediate between DMC and diesel fuel. This co-solvent forms a transitional mixing system that prevents phase separation, allowing DMC to remain dissolved in the diesel fuel at low temperatures while maintaining the soot reduction benefits of DMC.
Solution Approach 2:
The patent creates a composite additive system combining DMC with co-solvents (alcohols or ethers) in specific ratios. This composite formulation leverages the complementary properties of each component: DMC provides soot reduction while the co-solvent ensures low-temperature miscibility, achieving both environmental and operational requirements.
2Object-generated harmful factors
If dimethyl carbonate (DMC) is added to diesel fuel to reduce soot emissions, then soot emission is reduced, but cetane number decreases leading to lowered performance and efficiency
Solution Approach 1:
The patent optimizes the concentration parameters of DMC and co-solvents in the additive mixture, and controls the dosage of this additive in the diesel fuel. By precisely adjusting these parameters (DMC content, co-solvent ratio, additive dosage), the formulation achieves optimal balance between soot reduction and cetane number maintenance, ensuring engine efficiency is not compromised.
3Object-generated harmful factors
If dimethyl carbonate (DMC) is added to diesel fuel, then soot emission is reduced, but the additive separates from the fuel mixture at low temperatures
Solution Approach 1:
The patent introduces a co-solvent (alcohol or ether) as an intermediary substance to mediate between DMC and diesel fuel. This co-solvent forms a transitional mixing system that prevents phase separation, allowing DMC to remain dissolved in the diesel fuel at low temperatures while maintaining the soot reduction benefits of DMC.
Solution Approach 2:
The patent optimizes the concentration parameters of DMC and co-solvents in the additive mixture, and controls the dosage of this additive in the diesel fuel. By precisely adjusting these parameters (DMC content, co-solvent ratio, additive dosage), the formulation achieves optimal balance between soot reduction and cetane number maintenance, ensuring engine efficiency is not compromised.
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 composition significantly reduces soot emissions and maintains engine performance across varying conditions, including high altitudes, without the drawbacks of phase separation and decreased cetane number associated with DMC alone.
Implementation Method 1
a phase stabilizer present at 20 ̃99 wt % of the multifunctional additive, said phase stabilizer comprising a methyl ester of low carbon number
Implementation Method 2
a cetane improver present at 0.5 ̃20 wt % of the multifunctional additive
Implementation Method 3
diesel fuel containing 5% DMC has 10 ̃30% reduction of particulate emissions
Data Source
AI summary
The present disclosure provides a diesel fuel composition containing DMC and multifunctional additives to reduce particulate emission, improve efficiency and be used in cold and/or hypoxia conditions.