Exhaust Pipe Surface Coat Layer for Heat Dissipation
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Solution Overview
Problem
Existing exhaust pipes with complex double-pipe structures and movable heat transfer members face challenges in efficiently managing high exhaust gas temperatures, leading to potential catalyst deterioration and inefficient heat dissipation during high-speed engine operations.
Innovation Solution
An exhaust pipe with a surface coat layer formed using an exhaust pipe paint containing inorganic particles, inorganic glass particles, and an inorganic binder with a softening temperature higher than the glass particles, which secures heat dissipation without the need for additional parts, allowing the pipe to be manufactured without a heating treatment by utilizing the heat of exhaust gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a double-pipe structure with movable heat transfer member is used, then heat dissipation performance is improved, but device complexity increases
Solution Approach 1:
The patent merges the heat dissipation function into the exhaust pipe wall itself by forming a surface coat layer with high heat radiation properties directly on the exhaust pipe base. This eliminates the need for separate heat transfer members and double-pipe structures, achieving heat dissipation through material composition rather than complex mechanical structures.
Solution Approach 2:
The patent changes the physical and chemical parameters of the exhaust pipe surface by applying a surface coat layer containing inorganic particles with high heat radiation properties. This modifies the thermal radiation characteristics of the exhaust pipe, enabling efficient heat dissipation without structural complexity.
2Reliability
If inorganic binder with high softening temperature is used, then heat resistance is improved, but manufacturing complexity increases due to requiring heating treatment
Solution Approach 1:
The patent utilizes the exhaust gas itself as the heating source to cure the inorganic binder. The exhaust gas flowing through the pipe provides the necessary heat to soften and bond the inorganic particles and binder, eliminating the need for external heating equipment or separate curing processes.
Solution Approach 2:
The patent converts the high temperature of exhaust gas, which is typically a harmful factor that needs to be managed, into a beneficial resource for curing the surface coat layer. The exhaust gas temperature naturally cures the inorganic binder, turning a thermal challenge into a manufacturing advantage.
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 provides a simpler structure, enhances heat resistance and thermal shock resistance, preventing the surface coat layer from peeling or cracking even at high temperatures, and ensures efficient heat dissipation, maintaining catalyst efficiency.
Implementation Method 1
the inorganic glass particles soften, are integrated to form a glass substrate
Implementation Method 2
Heat dissipation required of the exhaust pipe can be secured by inorganic particles contained in the surface coat layer
Data Source
Figure 1
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AI summary
The present invention relates to an exhaust pipe paint, a method for forming a surface coat layer on an exhaust pipe base, and an exhaust pipe paint, wherein said surface coat layer comprises an inorganic glass, an inorganic particle, and an inorganic binder, in said inorganic glass, a part of said inorganic binder is diffused and said inorganic particle and the rest of said inorganic binder in particulate form are dispersed, and said inorganic glass is made of one kind or a plurality of low-melting glasses.