Exhaust Gas Throttle Housing Integrated Stopper Design
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Solution Overview
Problem
Existing exhaust gas throttle systems for large-volume vehicle engines face challenges in precisely defining end positions, requiring precise installation of separate stopper elements which complicates the manufacturing and installation process.
Innovation Solution
The stopper elements are integrated into recesses within the housing, allowing for precise positioning and potentially being connected with the bearing elements, reducing the number of components and installation effort, with the option to define either the open or closed position using a single stopper element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate stopper elements are used and fastened to the housing, then the end positions can be defined, but the installation process becomes complex and time-consuming due to the need for precise installation of multiple separate components
Solution Approach 1:
The stopper element is integrated directly into the housing as a single piece structure. The housing contains a recess with a stopper surface that directly defines the end position, eliminating the need for separate stopper components. This merging of the housing and stopper function reduces the number of parts and simplifies installation while maintaining precise end position definition through the precisely formed recess.
2Reliability
If multiple separate stopper elements are fastened to the housing, then end positions can be defined, but the number of components increases and installation effort increases
Solution Approach 1:
The housing and stopper element are merged into a single integrated component. The recess in the housing directly provides the stopper surface, eliminating the need for separate stopper elements that would need to be fastened to the housing. This reduces the component count while maintaining reliable end position definition through the integrated stopper surface.
3Manufacturing precision
If separate stopper elements are machined and fastened to the housing, then end positions can be defined, but the manufacturing process becomes more complex
Solution Approach 1:
The stopper element is merged with the housing, allowing the stopper surface to be formed directly as part of the housing manufacturing process. The recess containing the stopper surface can be produced in the same machining or forming operations used to create the housing itself, eliminating separate machining and fastening steps for separate stopper elements.
Solution Approach 2:
The recess with the stopper surface is pre-formed as an integral part of the housing during housing manufacturing. This preliminary formation of the stopper feature eliminates the need for subsequent separate machining and assembly operations, simplifying the overall manufacturing process while ensuring precise positioning.
Data Source
AI summary
An exhaust gas throttle means for motor vehicles comprises a housing in which an exhaust gas throttle is arranged. The exhaust gas throttle is connected with a throttle shaft which is supported in bearing elements. Inside the housing two stopper elements are provided which are arranged in recesses of the housing to be received in correct positional arrangement.