Heat Insulating Material for Side-Connected Exhaust Gas Purifiers
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Solution Overview
Problem
Existing heat insulating materials for exhaust gas purifiers are not effectively applied to configurations where the exhaust pipe is connected to the side surface of the cylindrical bases, rather than the ends, leading to inefficiencies in heat management and potential overheating.
Innovation Solution
A heat insulating material design featuring a central portion covering the bases and symmetrically connected rectangular portions that cover the side surface of the exhaust gas purifier, utilizing a sheet-like base material with ceramic or glass fibers and an aluminum foil backing, allowing for attachment to the side surface by bending and adhesive application, with additional slits and notches for secure fitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional heat insulating material design is used for exhaust gas purifiers with side-connected exhaust pipes, then the material cannot be properly attached to cover the side surface, but the patent introduces rectangular portions connected to a central portion that enable coverage of both bases and side surfaces
Solution Approach 1:
The heat insulating material is divided into a central portion and multiple rectangular portions that can be separately formed and then assembled. This segmentation allows the material to adapt to the side-connected exhaust pipe configuration while maintaining manageable complexity through modular construction.
Solution Approach 2:
The invention transitions from a conventional single-layer or simple multi-layer design to a three-dimensional structured material with rectangular portions extending from a central portion. This dimensional change enables coverage of both the bases and the side surface, providing the necessary adaptability for side-connected exhaust pipe configurations.
2Reliability
If mounting wires are used to attach the heat insulating material, then secure attachment is achieved, but the number of wires and assembly complexity increases
Solution Approach 1:
The rectangular portions are designed to be connected to the central portion through bending and adhesive application, merging multiple attachment functions into a single integrated structure. This eliminates the need for separate mounting wires, reducing the number of components while maintaining secure attachment through the combined mechanical bending and chemical adhesive bonding.
3Ease of operation
If adhesive is applied to attach the heat insulating material, then wire-free attachment is achieved, but adhesive integrity under high temperatures becomes challenging
Solution Approach 1:
The heat insulating material uses a composite structure with a base material layer and an aluminum foil layer. This composite design provides thermal reflection and insulation properties that protect the adhesive from excessive heat exposure, maintaining adhesive integrity under high temperature conditions while enabling wire-free attachment.
4Reliability
If the heat insulating material is designed to cover both bases and side surface, then complete heat insulation is achieved, but manufacturing complexity increases
Solution Approach 1:
The material is segmented into a central portion and rectangular portions that can be manufactured separately using standard sheet material cutting and folding processes. This segmentation enables complete heat insulation coverage of both bases and side surface while simplifying manufacturing through modular production and assembly.
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
This design enables effective heat insulation of exhaust gas purifiers with side-connected exhaust pipes, reducing the number of mounting wires and preventing separation, while maintaining the adhesive's integrity under high temperatures.
Implementation Method 1
a sheet-like base material with ceramic or glass fibers
Implementation Method 2
an aluminum foil backing
Data Source
AI summary
A heat insulating material includes a central portion to cover a first base or a second base of an exhaust gas purifier of an engine, and a first rectangular portion and a second rectangular portion which have substantially rectangular shapes and which are connected to the central portion substantially symmetrically with respect to a center of the central portion. The second base is provided opposite to the first base. The first rectangular portion and the second rectangular portion are configured to cover a side surface of the exhaust gas purifier. The side surface connects the first base and the second base.