Control Valve Radial Nested Filter for Engine Space Reduction
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Solution Overview
Problem
Existing control valves for internal combustion engines have complex structures that require expensive machining and are prone to dirt contamination and pressure peak damage, with high axial installation space requirements due to additional components like non-return valves and filters.
Innovation Solution
A control valve design with a hollow cylindrical valve housing, where the non-return valve's closing body is radially movable within an annular filter, reducing installation space and preventing dirt entry and pressure peak propagation, using a spring element and guide surfaces to facilitate movement and positioning within the filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional components like non-return valves and filters are integrated into the control valve, then functional reliability is improved, but axial installation space requirement increases
Solution Approach 1:
The non-return valve closing body is positioned radially inside the annular filter, creating a nested arrangement where one component occupies the radial space of another. This allows both the filter and non-return valve to be integrated within the same axial space, reducing the overall axial installation space requirement while maintaining the functional reliability provided by both components.
Solution Approach 2:
The closing body is arranged radially within the annular filter rather than axially, transitioning from an axial arrangement to a radial arrangement. This dimensional change allows the non-return valve functionality to be incorporated without increasing axial installation space, as the closing body utilizes the radial depth of the annular filter structure.
2Reliability
If complex machining steps are used to form multiple cavities in the valve housing, then hydraulic separation is improved, but manufacturing cost increases
Solution Approach 1:
The valve housing is divided into multiple cavities that are hydraulically separated, with each cavity serving a specific function. This segmentation allows for simplified machining of each individual cavity compared to forming complex multi-cavity structures in one piece, reducing manufacturing cost while maintaining the necessary hydraulic separation for reliable operation.
3Length of moving object
If the closing body is arranged radially within the annular filter, then axial installation space is reduced, but structural complexity increases
Solution Approach 1:
The guide surfaces for the closing body are integrated directly into the annular filter structure rather than being separate components. This merging of the filter structure with the guiding function reduces the number of separate parts and simplifies the overall structure, thereby reducing structural complexity while maintaining the space-efficient radial arrangement of the closing body.
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 reduces production costs and axial installation space, prevents dirt and pressure peak issues, and maintains functional integrity by integrating the non-return valve and filter within the valve housing, enhancing the control valve's operational reliability.
Implementation Method 1
a non-return valve (47) which in turn has a closing body (49) and a spring element (50)
Implementation Method 2
an annular filter (48) arranged within the valve housing (33)
Data Source
AI summary
A control valve for a device for variably adjusting the control times of gas-exchange valves of an internal combustion engine. The control valve has a substantially hollow cylindrical valve housing, a non-return valve and an annular filter. The annular filter is arranged within the valve housing and the non-return valve has a closing body and a spring element.