Bypass Valve Spring Segmentation for Pressure Equilibrium
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Solution Overview
Problem
Existing diverter valves for internal combustion engines require high actuating forces and suffer from unintended opening and closing due to pressure imbalances, leading to increased wear and complex constructions.
Innovation Solution
Incorporating a first spring element for the first valve closure body and a second spring element for the second valve closure body, with the control opening opposite the compensation opening, ensuring a defined position and preventing unwanted closure, while allowing a simple and cost-effective design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single spring element is used for the valve closure body, then the construction is simpler, but the valve cannot maintain a defined position and suffers from unintended opening and closing due to pressure imbalances
Solution Approach 1:
The single spring element is divided into two separate spring elements: a first spring element acting on the valve closure body and a second spring element acting on the armature. This segmentation allows independent optimization of each component's function, enabling the valve closure body to maintain a defined position while preventing unintended opening and closing.
2Reliability
If the control opening cross section is larger than the compensation opening, then pressure equilibrium can be achieved, but this leads to unintended closing of the valve due to spring force in the open state
Solution Approach 1:
The valve control system is segmented into two independent valve closure bodies (first and second), each with its own spring element and control openings. This allows the first valve closure body to maintain pressure equilibrium through its compensation opening while the second valve closure body provides additional control through its control openings, preventing unintended closing while maintaining stability.
Solution Approach 2:
The armature with the second valve closure body acts as an intermediary element between the electromagnetic actuator and the first valve closure body. It mediates the force transmission and pressure control, allowing precise control of the valve opening state while maintaining pressure equilibrium through the coordinated action of both spring elements.
3Reliability
If high actuating force is used to open the valve, then the valve can be reliably opened, but large electromagnets are required and opening times are restricted
Solution Approach 1:
The system uses pneumatic pressure differential forces generated by the control pressure chamber and compensation openings to assist in opening the valve. By controlling the pressure differential through the second valve closure body and its control openings, the system reduces the mechanical actuating force required while maintaining reliable valve opening.
Solution Approach 2:
The valve system employs dynamic pressure control through the second valve closure body that can rapidly adjust the pressure differential across the first valve closure body. This dynamic control allows the valve to open quickly with reduced actuating force, as the pressure differential provides additional opening force during the transition.
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 enables reliable and defined operation of the bypass valve, avoiding unintended closure and pulsing, and simplifies the construction of the diverter valve, reducing wear and actuating force requirements.
Implementation Method 1
a first spring element (18) which exerts a spring force (19) in the closing direction on the first valve closure body (10) and a second spring element (27) which exerts a spring force in the closing direction on the armature (23)
Implementation Method 2
an electromagnetic valve, which has a coil body, a return arrangement and an armature, which is also pretensioned in the closing direction, and a second valve closure body that interacts with it
Implementation Method 3
the pressure difference responsible for this decreases when it is open, so that the valve can close unintentionally
Data Source
AI summary
Regulating devices for internal combustion engines, which regulating devices are arranged in a bypass duct (8) between the pressure side (12) and the suction side (14) of a supercharging device and have a solenoid valve (4) and have a bypass valve (2) with a pneumatically actuable valve closure body (10) and a control pressure chamber (24), wherein a fluidic connection can be produced between the pressure side (12) and the suction side (14) of the supercharging device via the control pressure chamber (24) during the opening process of the bypass valve (2) by means of an energization of the solenoid valve (4), are known. However, with said designs, an undesired closure of the bypass valve may occur. Said problem is solved according to the present invention in that, in the fully open state of the bypass valve (2), a fluidic connection exists between the pressure side (12) and the suction side (14) of the supercharging device via the control pressure chamber (24) at least temporarily, wherein a closure of the fluidic connection causes a resultant force in the closing direction.