Exhaust Gas Distributor Control Housing Stop Contours
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Solution Overview
Problem
The manufacture of existing exhaust gas distributors is complicated due to narrow manufacturing tolerances required for the adjustable control element to cooperate with stop contours on both the control housing and distributor housing, making the process costly and intricate.
Innovation Solution
Integrating all stop contours onto the control housing allows the control element and housing to be manufactured as a pre-assembled, fully functional unit, eliminating the need for stop contours on the distributor housing and simplifying the manufacturing process by reducing dimensions and tolerances, enabling separate and simplified production of the control and distributor housings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If stop contours are formed on both the control housing and distributor housing to enable proper valve element adjustment, then the valve element can be properly positioned between end positions, but the manufacturing complexity increases due to narrow tolerances required across both housings
Solution Approach 1:
The patent divides the stop contour function into two separate segments: one stop contour is formed on the control housing while the other is formed on the distributor housing. This segmentation allows each housing to be manufactured independently with less stringent tolerance requirements, as each only needs to accommodate one stop contour rather than coordinating multiple stop contours across both components.
2Ease of operation
If the valve element is extended axially from the control housing to cooperate with the valve seat on the distributor housing, then proper end position cooperation is achieved, but the control housing and distributor housing must be manufactured with tight tolerances relative to each other
Solution Approach 1:
The patent segments the stop contour provisions between the control housing and distributor housing, with each housing providing one stop contour. This segmentation eliminates the need for tight tolerance coordination between the housings, as each housing independently provides its stop contour without requiring precise relative positioning of both housings.
3Ease of manufacture
If the control housing is manufactured separately from the distributor housing, then assembly flexibility is improved, but additional expenditures are required to ensure proper tolerance coordination between the two housings
Solution Approach 1:
The patent segments the stop contour function between the two housings, allowing each to be manufactured independently with standard tolerances. This segmentation eliminates the need for expensive tolerance coordination processes, as each housing is manufactured separately without requiring tight tolerance matching between them.
Data Source
AI summary
An exhaust gas distributor is disclosed. The distributor includes a distributor housing having a first exhaust gas path fluidically connecting a first inlet opening to a first outlet opening, a second exhaust gas path fluidically connecting a second inlet opening to a second outlet opening, and a third exhaust gas path fluidically connecting the second exhaust gas path to a third outlet opening, and an adjustable control element controlling the distribution of an exhaust gas flow from the second inlet opening to the second outlet opening and the third outlet opening. The control element in its end positions cooperates with stop contours. The control element is supported in a control housing that is manufactured separately from the distributor housing and which is installed in the distributor housing.