High Flash Point Engine Cleaning Composition
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Solution Overview
Problem
Existing cleaning compositions for combustion engine systems have a low flash point, making them hazardous to use and difficult to transport and store, while still requiring effective deposit removal and emission reduction.
Innovation Solution
A composition comprising a hydrocarbon lubricant with a flash point under 80°C, an aromatic hydrocarbon with a flash point under 60°C, and oxygen donors like xylene and methoxy propanol, which together have a flash point of at least 21°C, improving safety and performance by reducing deposits and emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cleaning compositions with low flash point solvents are used, then effective deposit removal is achieved, but safety hazards and transport/storage difficulties increase
Solution Approach 1:
The patent changes the flash point parameter of the cleaning composition by substituting low flash point solvents with high flash point solvents. The composition uses solvents with flash points above 60°C (such as aliphatic hydrocarbons like heptane, octane, nonane, decane and their derivatives), thereby transforming the hazardous low flash point property into a safe high flash point property while maintaining cleaning effectiveness.
Solution Approach 2:
The patent creates a composite cleaning composition by combining multiple high flash point solvents including aliphatic hydrocarbons (C7-C10), aromatic hydrocarbons (toluene, xylene), and their derivatives. This composite formulation achieves both effective deposit removal and improved safety by utilizing the synergistic effects of different high flash point solvents, ensuring the overall composition maintains a flash point above 60°C.
2Object-affected harmful factors
If high flash point solvents are used, then safety and transport/storage ease improve, but solvency and solubility may be compromised
Solution Approach 1:
The patent employs a composite solvent system combining aliphatic hydrocarbons (heptane, octane, nonane, decane and their derivatives), aromatic hydrocarbons (toluene, xylene), and their oxygenated derivatives. This composite formulation ensures that the composition maintains flash point above 60°C while preserving effective solvency for engine deposits through the combined action of different solvent types with complementary solubility characteristics.
Solution Approach 2:
The patent applies different solvent components with specific local qualities to address different aspects of deposit removal. Aliphatic hydrocarbons provide bulk solvency for heavy deposits, aromatic hydrocarbons enhance dissolution of organic residues, and oxygenated derivatives improve solubility and cleaning efficiency. Each component contributes its specific solvency profile to the overall composition, ensuring comprehensive deposit removal while maintaining high flash point.
Data Source
AI summary
A composition for cleaning a combustion engine system. The composition comprises a hydrocarbon. The hydrocarbon comprises respective first and second hydrocarbons. The first hydrocarbon comprises a lubricant, wherein the lubricant has a flash point, measured according to ASTM D93, of less than 80°C. The second hydrocarbon comprises an aromatic hydrocarbon, wherein the aromatic hydrocarbon has a flash point, measured according to ASTM D93, of less than 60°C. The composition further comprises an oxygen donor. The oxygen donor comprises respective first and second oxygen donors. The first oxygen donor comprises a carbonyl group and has a flash point, measured according to ASTM D93, of from 10°C to 80°C. The second oxygen donor comprises a hydroxyl group and has a flash point, measured according to ASTM D93, of from 10°C to 50°C.