Solenoid Valve Dual Vibration Decoupling
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Solution Overview
Problem
Existing vibration damping solutions for solenoid valves in engines either lead to wear due to friction or have slow response times due to viscoelastic fluids, failing to effectively absorb vibrations while maintaining fast actuator control.
Innovation Solution
A double vibration decoupling device is implemented, comprising external elastic damping means and internal viscoelastic fluid damping within the solenoid valve, allowing for improved vibration isolation and dynamic control pressure management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a flexible material is used to connect the solenoid valve to the motor for vibration damping, then vibration absorption is improved, but friction causes wear and slows down transient movement dynamics
Solution Approach 1:
The vibration damping function is segmented into two separate locations: external damping means (first damping means) connecting the solenoid valve body to the motor, and internal damping means (second damping means) within the solenoid valve body. This segmentation allows the external flexible material to handle vibration absorption while the internal mechanism handles actuator protection without excessive friction.
Solution Approach 2:
The external damping means acts as an intermediary element between the motor and the solenoid valve body, absorbing vibrations before they reach the solenoid valve. This intermediary approach protects the actuator from vibration-induced wear while maintaining responsive movement.
2Object-affected harmful factors
If a viscoelastic fluid is used inside the solenoid valve for vibration filtering, then vibration damping is improved, but the response time becomes too long for dynamic actuator control
Solution Approach 1:
The damping function is segmented into external and internal components. The external damping means handles the bulk of vibration absorption, while the internal damping means provides supplementary filtering. This segmentation reduces the burden on the internal viscoelastic fluid, allowing it to provide vibration filtering without being the sole damping mechanism, thus maintaining faster response times.
Solution Approach 2:
Different damping characteristics are applied at different locations: the external damping means provides primary vibration isolation, while the internal damping means provides localized vibration filtering. This local quality approach allows the system to achieve comprehensive vibration protection while maintaining the speed required for dynamic actuator control.
3Device complexity
If the solenoid valve is directly connected to the motor, then the structure is simple, but resonance causes actuator control failures
Solution Approach 1:
The connection structure is segmented into rigid connection elements and flexible damping elements. The first damping means provides a flexible connection between the motor and solenoid valve body, while the second damping means provides internal protection. This segmented approach maintains structural simplicity while effectively preventing resonance-induced actuator failures through dual vibration decoupling.
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 effectively absorbs engine vibrations, reducing resonance-induced failures and maintaining a fast response time for solenoid valve actuators, enhancing control precision and durability.
Implementation Method 1
the first damping means comprise an elastic material. This constitutes a simple, effective way of isolating vibrations with adequate mechanical strength
Implementation Method 2
the second decoupling means comprise a cylinder, a piston capable of sliding in the cylinder and immersed in a viscoelastic fluid
Implementation Method 3
the viscoelastic fluid has a kinematic viscosity of between 100 centistokes and 1000 centistokes at 20° C. and a kinematic viscosity of between 5 centistokes and 100 centistokes at 130° C.
Implementation Method 4
the viscoelastic fluid comprises a polymer of viscosity intended to cause the dynamic viscosity of the viscoelastic fluid to drop, for a determined shear rate, which makes it possible to release the viscosity and therefore the friction on the solenoid valve actuator
Data Source
Figure 1~4
AI summary
The invention relates to a solenoid valve assembly intended to be fixed to an assembly comprising a motor (1), the solenoid valve assembly comprising: - a pneumatic solenoid valve (24) comprising a body (38), an inlet (30) intended to be connected to a supply pressure, an outlet (26) intended to provide a control pressure and an actuator enabling control of the control pressure, - first damping means (39, 39') for the vibrations produced by the motor during its operation, disposed externally to the body (38) of the solenoid valve (24), the first damping means (39, 39') being intended to connect the body (38) of the solenoid valve (24) to the motor (1), characterized in that the solenoid valve (24) comprises second damping means (41, 37) disposed internally to the body (38) of the solenoid valve (24), the first and second damping means (39,39') being designed so that they form a double vibration decoupling device between the motor (1) and the actuator.