Exhaust Gas Ceramic Body Axial Contact Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing exhaust gas treatment devices with ceramic bodies face damage due to axial forces during operation, and the use of supporting elements is costly and inefficient.
Innovation Solution
The ceramic body is equipped with a contact zone at the outlet end and the housing with a coordinated bearing zone, allowing for continuous or distributed axial contact that reduces force peaks and eliminates the need for additional supporting elements, thereby minimizing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If supporting elements are used to prevent axial contact between ceramic body and housing, then damage risk is reduced, but manufacturing cost increases
Solution Approach 1:
The invention removes the supporting elements (wire mesh cushions) from the system entirely. Instead of using these separate components to prevent axial contact, the design allows direct axial contact between the ceramic body and housing, eliminating the need for additional supporting parts and reducing manufacturing cost while maintaining damage protection through proper contact zone design
Solution Approach 2:
The invention introduces a contact zone on the ceramic body outlet end that acts as an intermediary structure. This contact zone is specifically designed to distribute axial forces uniformly when direct contact with the housing occurs, preventing damage without requiring separate supporting elements
2Reliability
If axial supporting elements are installed to prevent direct contact, then ceramic body protection is improved, but device complexity increases
Solution Approach 1:
The invention extracts and removes the supporting elements (wire mesh cushions or other axial supports) from the system. By eliminating these components entirely, the assembly process is simplified while protection is maintained through the contact zone design that distributes forces during direct contact with the housing
Solution Approach 2:
The ceramic body itself provides its own protection through the integrated contact zone design. The contact zone is formed as part of the ceramic body structure, allowing it to self-distribute axial forces during contact with the housing without requiring external supporting elements or additional assembly steps
Data Source
AI summary
An exhaust gas treatment device for an exhaust system of an internal combustion engine, has a housing in which is arranged at least one ceramic body for exhaust gas treatment. To reduce the risk of damage for the ceramic body and/or the housing in the case of an inexpensive design, the ceramic body has a machined contact zone at least on its outlet end, and the housing has a bearing zone facing the ceramic body on its outlet end. The contact zone and the bearing zone cooperate with one another so that in the case of axial contact on the outlet end between the ceramic body and the housing, the ceramic body is in direct and axial contact with the housing in a line or over an area via the contact zone and the bearing zone, so that the contact is distributed in the circumferential direction or is continuous.