Mannich Fuel Additive Composition for PFI and GDI Deposit Control
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Solution Overview
Problem
Conventional fuel additives often fail to balance performance across different engine types, such as gasoline port fuel injection (PFI) and gasoline direct injection (GDI) engines, and may require high treat rates or be costly and difficult to manufacture.
Innovation Solution
A fuel additive composition comprising Mannich detergent additives and Mannich-based quaternary ammonium salt detergent additives, in specific weight ratios, which includes alkoxylated alcohol, to enhance engine and injector performance in both PFI and GDI engines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fuel additives are used to improve performance in one engine type (PFI or GDI), then performance in that specific engine type is enhanced, but performance in the other engine type deteriorates or does not improve
Solution Approach 1:
The patent applies universality by designing a detergent composition that functions effectively in both PFI and GDI engine types. The composition includes Mannich-based detergents and quaternary ammonium salt detergents in specific weight ratios (0.5:99.5 to 50:50) that provide balanced deposit control performance across different injection systems, making a single additive formulation universally applicable to multiple engine architectures.
Solution Approach 2:
The patent employs parameter changes by optimizing the weight ratio parameters of different detergent components (Mannich-based detergents, quaternary ammonium salt detergents, and alkoxylated alcohols) to achieve optimal performance. By adjusting these compositional parameters within specific ranges, the formulation adapts to provide effective deposit control in both PFI and GDI engines without requiring engine-specific formulations.
2Reliability
If high treat rates of fuel additives are used to achieve desired deposit control effects, then deposit control performance is improved, but the cost and complexity of fuel formulation increases
Solution Approach 1:
The patent applies parameter changes by establishing specific weight ratio parameters for detergent components that achieve effective deposit control at reasonable treat rates. The formulation specifies detergents at 0.01-10% by weight with defined ratios between components, optimizing performance while controlling formulation complexity and treatment rates.
Solution Approach 2:
The patent uses composite materials by combining multiple detergent types (Mannich-based detergents, quaternary ammonium salt detergents, and alkoxylated alcohols) in a synergistic formulation. This composite approach enhances deposit control performance beyond what individual additives could achieve alone, allowing effective protection at moderate treat rates without excessive formulation complexity.
3Reliability
If complex mixtures of multiple fuel additives are used to address various fuel properties, then comprehensive fuel performance is improved, but the difficulty of balancing and formulating the additive package increases
Solution Approach 1:
The patent applies merging by consolidating multiple detergent functions into a single integrated formulation containing Mannich-based detergents, quaternary ammonium salt detergents, and alkoxylated alcohols. This unified additive package addresses deposit control in both PFI and GDI engines simultaneously, simplifying the formulation process compared to using separate engine-specific additive packages.
Solution Approach 2:
The patent achieves universality by designing a multi-functional detergent composition that performs deposit control in different engine types (PFI and GDI) with a single formulation. The additive package simultaneously protects injectors, intake valves, and combustion chambers across engine architectures, reducing the need for multiple specialized additives.
Data Source
AI summary
The present disclosure provides fuel additives including Mannich detergent additive(s) and Mannich-based quaternary ammonium salt detergent additive(s) effective to improve engine performance in both port fuel injected and gasoline direct injection engines.