Integrated Check Valve Ring for Hydraulic Pressure Blowback
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Solution Overview
Problem
Existing automotive hydraulic valves face reliability issues due to pressure peaks and blowbacks, which current solutions fail to address effectively, particularly in camshaft adjusters and transmissions, leading to potential damage and reduced operational safety.
Innovation Solution
A valve with a check valve design featuring a closed ring band mounted freely within a central guide, with unsymmetrically distributed through-openings that provide a supporting region and prevent backflow by utilizing spring steel hysteresis and frictional forces, ensuring reliable operation under varying pressure conditions without locking measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate check valves are used for pressure peaks, then reliability under pressure blowback is improved, but device complexity increases
Solution Approach 1:
The patent combines the check valve function directly into the valve body structure, merging two separate components (valve body and check valve) into a single integrated component. This eliminates the need for separate check valves while maintaining the pressure blowback protection function, thus improving reliability without increasing device complexity.
2Stability of the object's composition
If locking measures are used to secure the ring, then positional stability is improved, but device complexity increases
Solution Approach 1:
The closed ring utilizes its own elastic deformation and frictional forces to maintain positional stability within the valve body. The ring's elasticity allows it to deform and lock into position automatically without requiring external locking measures such as locking screws or clamps, thereby achieving stability while minimizing device complexity.
Solution Approach 2:
The closed ring is designed as a flexible elastic component that can deform to engage with the valve body's internal features. This flexibility allows the ring to self-secure through elastic deformation and friction, eliminating the need for additional rigid locking mechanisms and reducing overall device complexity.
3Ease of manufacture
If through-openings are distributed uniformly over the entire circumference, then manufacturing simplicity is improved, but functional performance under pressure peaks deteriorates
Solution Approach 1:
The patent employs an asymmetric distribution of through-openings in the closed ring, concentrating openings in specific angular positions rather than distributing them uniformly. This asymmetric arrangement optimizes the valve's response to pressure peaks by positioning openings to effectively manage fluid flow under varying pressure conditions, thereby improving functional performance while maintaining manufacturing feasibility.
4Ease of operation
If the ring is freely mounted without locking measures, then ease of assembly is improved, but reliability under varying pressure conditions deteriorates
Solution Approach 1:
The freely mounted closed ring utilizes its own elastic properties to automatically adapt to varying pressure conditions. The ring's elasticity enables it to deform and maintain sealing contact with the valve body under different pressure loads, achieving self-regulation without requiring locking measures. This self-service mechanism ensures both ease of assembly and reliability under varying pressure conditions.
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
The solution enhances operational safety and reliability by preventing pressure peaks from reaching the pressure source, maintaining the oil pump's efficiency, and extending the service life of the valve by allowing the ring to rotate freely and uniformly load the spring steel, thus ensuring stable performance under diverse conditions.
Implementation Method 1
The band itself is a closed ring which has no, for example punched-in, openings. The band together with individual through-openings, which are present in the central guide for example as bores, form the check valve, which closes when the pressure on the inner side of the closed band is greater than the pressure on the outer side of the closed band plus a corresponding spring steel hysteresis and frictional force.
Implementation Method 2
The band together with individual through-openings, which are present in the central guide for example as bores, form the check valve, which closes when the pressure on the inner side of the closed band is greater than the pressure on the outer side of the closed band plus a corresponding spring steel hysteresis and frictional force.
Implementation Method 3
The band together with individual through-openings, which are present in the central guide for example as bores, form the check valve, which closes when the pressure on the inner side of the closed band is greater than the pressure on the outer side of the closed band plus a corresponding spring steel hysteresis and frictional force.
Data Source
AI summary
The invention relates to a valve with a central guide and a check valve. The check valve and valve form an integrated component, the check valve being formed by a band which is shaped into a ring and is arranged in an internal groove.