Abrasive Particle Mounting Mat for Catalyst Retention
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Solution Overview
Problem
Existing pollution control element mounting systems face challenges in reliably retaining catalyst supports and filter elements within pollution control devices due to excessive compression leading to fiber damage, reduced flexibility, and increased risk of slippage and erosion, which compromises the stability and durability of the mounting system.
Innovation Solution
A mounting system comprising a mat with fine abrasive particles on its surface, applied under compressive force, increases the coefficient of friction between the pollution control element and the mounting system, enhancing retention and resistance to movement, heat, and erosion while maintaining assembly flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mounting system is compressed to increase retention force, then the retaining ability improves, but the fiber material becomes damaged and loses flexibility
Solution Approach 1:
The mounting system applies different properties to different regions: the fiber mat provides compression and retention in the bulk, while abrasive particles are concentrated on the contact surfaces to provide friction without requiring excessive compression. This localized differentiation allows the system to achieve high retention force without uniformly compressing and damaging the entire fiber structure.
Solution Approach 2:
The mounting system combines fiber material with abrasive particles to create a composite structure. The fiber component provides flexibility and compression resistance, while the abrasive component provides high friction at contact surfaces. This composite approach allows the system to maintain fiber flexibility while achieving enhanced retention through increased friction coefficient rather than relying solely on compression force.
2Reliability
If the mounting system is compressed to increase surface pressure, then the retention force improves, but the fiber material deteriorates and erosion resistance decreases
Solution Approach 1:
The invention changes the friction parameter by introducing abrasive particles, which increases the coefficient of friction between the mounting system and the pollution control element. This allows the system to achieve high retention force through increased friction rather than through high compression pressure, thereby reducing the damaging effects of excessive compression on the fiber material and maintaining erosion resistance.
3Stability of the object's composition
If the mounting system uses high compression to prevent slippage, then the retention stability improves, but the assembly processability deteriorates
Solution Approach 1:
The invention changes the friction coefficient by adding abrasive particles to the mounting system, which enables high retention stability to be achieved through increased friction rather than through high compression. This reduces the compression force required during assembly, thereby improving assembly processability while maintaining retention stability.
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 solution effectively prevents movement and separation of pollution control elements, improves heat resistance and surface pressure retention, and maintains processability, resulting in improved durability and performance of the pollution control device.
Implementation Method 1
fine particles of an abrasive material that are arranged at least on a surface of the mounting system so as to be in contact with an outer surface or side of the pollution control element
Data Source
AI summary
A pollution control element mounting system comprising a mat of a fiber material and fine particles of an abrasive material provided on an inner peripheral surface of the mat at least on the side intended to contact the pollution control element. A pollution control device comprising a casing, a pollution control element and the mounting system disposed between the casing and the pollution control element.