Exhaust Gas Treatment Carrier Offset Assembly
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Solution Overview
Problem
The accumulation of fibers from the fiber material encasing an exhaust gas treatment element in the contact area of two carrier elements in exhaust gas treatment arrangements for internal combustion engines hinders a stable and gas-tight connection, requiring manual intervention to prevent protrusion into the joint area.
Innovation Solution
The method involves designing carrier elements with radially extending connecting sections that are offset during the assembly process, ensuring that fibers are pressed inward and do not accumulate at the contact points, allowing for a secure and gas-tight connection without manual fiber adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the two carrier elements are moved towards each other in the final phase of assembly, then the connecting sections come into contact to form a stable connection, but fibers from the fiber material accumulate in the contact area and prevent a gas-tight connection
Solution Approach 1:
The patent offsets the connecting sections of the two carrier elements in the movement direction by a specific distance (5-20 mm). This spatial offset in one dimension ensures that during the final movement phase, fibers are pressed inward toward the exhaust gas treatment element rather than being pulled outward into the contact area, thereby preventing fiber accumulation while maintaining connection stability
Solution Approach 2:
The connecting sections are pre-configured with an offset position before the final assembly movement. This preliminary spatial arrangement ensures that when the carrier elements are moved towards each other, the offset automatically directs fibers inward, preventing accumulation at the contact area before the connection is finalized
2Object-generated harmful factors
If manual intervention is used to press fibers inward before final assembly, then fiber accumulation is prevented, but production time increases and automation is reduced
Solution Approach 1:
The offset configuration of the connecting sections enables the assembly process itself to automatically press fibers inward during the final movement phase. The mechanical movement of the carrier elements relative to each other performs the fiber compression function without requiring separate manual intervention, thereby preventing fiber accumulation while maintaining production efficiency and enabling automation
3Ease of manufacture
If the connecting sections are arranged in the same position on both carrier elements, then assembly is simplified, but fibers are pulled outward into the contact area during final movement
Solution Approach 1:
The patent introduces an asymmetric offset configuration where the connecting sections of the two carrier elements are positioned at different locations in the movement direction (offset by 5-20 mm). This asymmetric arrangement ensures that during the final assembly movement, the connecting sections contact in a sequence that presses fibers inward rather than pulling them outward, thereby preventing fiber protrusion while maintaining manufacturing simplicity
Data Source
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AI summary
A method for manufacturing an exhaust gas treatment arrangement, in particular for an exhaust gas flow path of an internal combustion engine, wherein the exhaust gas treatment arrangement comprises a tubular support body extending along a longitudinal axis of the support, formed with a first support element (14a) and a second support element (16a), and having a first axial end region and a second axial end region, and comprising at least one exhaust gas treatment element (34a) carried in the tubular support body with intermediate storage of at least one layer of fiber material (36a), comprises the measures: a) providing the first support element (14a) with a first connecting section (26a) and a second connecting section (28a) such that the first connecting section (26a) and the second connecting section (28a) extend substantially parallel to the longitudinal axis of the support from the first axial end region to the second axial end region,b) Providing the second support element (16a) with a third connecting section (30a) and a fourth connecting section (32a) such that the third connecting section (30a) and the fourth connecting section (32a) extend substantially parallel to the longitudinal axis of the support from the first axial end region to the second axial end region, c) Arranging the first support element (14a) such that the first connecting section (26a) and the second connecting section (28a) are offset from each other in a merging direction (Z), d) Arranging the second support element (16a) such that the third connecting section (30a) and the fourth connecting section (32a) are offset from each other in the merging direction (Z), e) Moving the first support element (14a) and the second support element (16a) towards each other in the merging direction (Z) such thatthat the first connecting section (26a) comes into contact with the third connecting section (30a) and the second connecting section (28a) comes into contact with the fourth connecting section (32a).