Conduit Connection Assembly Pressure Pulse Damping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing conduit connection systems in internal combustion engines, especially those connected to turbochargers, face issues with pressure pulses and leakage due to high pressures, leading to complex and costly damping solutions that can reduce turbocharger performance and seal wear.
Innovation Solution
A conduit connection assembly featuring a pressure reducing volume formed by a cavity and a draining connection between conduit parts, which communicates with a lower-pressure fluid conducting volume, reducing exposure to high pressures and pulses on the sealing abutment, allowing for simpler and less costly sealing solutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If complex pulsation damping devices (resonators, diaphragms, bladders) are added to reduce pressure pulses, then the harmful effects of pressure pulses are reduced, but the device complexity and cost increase
Solution Approach 1:
The conduit connection is divided into separate components (first conduit part, second conduit part, sealing element) with a cavity between them, allowing the pressure pulse damping function to be integrated into the connection structure itself rather than adding separate damping devices
Solution Approach 2:
The cavity is formed between the first and second conduit parts at a distance from the fluid conducting volume, creating a nested pressure equalization chamber that is integrated within the connection assembly structure
2Object-affected harmful factors
If pulsation damping devices are placed on the turbine side upstream of the turbo charger, then pressure pulses are reduced, but the turbo charger performance decreases due to reduced peak pressure
Solution Approach 1:
The pressure equalization cavity is localized to the connection area between conduit parts, providing pressure pulse relief only at the sealing interface while leaving the main fluid conducting volume and turbo charger operation unaffected
Solution Approach 2:
The cavity acts as an intermediary pressure equalization chamber between the high-pressure first conduit part and the second conduit part, absorbing pressure pulses locally without interfering with the turbo charger's pressure generation function
3Power
If high pressures are maintained in the fluid conducting volume for turbo charger operation, then turbo charger performance is maintained, but seal wear increases and leakage risk increases
Solution Approach 1:
The cavity is positioned to receive and cushion pressure pulses before they reach the sealing element, protecting the seal from high-pressure effects while allowing the fluid conducting volume to maintain operating pressure
Solution Approach 2:
The cavity serves as an intermediary pressure buffer zone between the high-pressure fluid conducting volume and the sealing interface, reducing the pressure load on the seal while maintaining system performance
4Reliability
If conduit parts are assembled with sealing elements to prevent leakage, then sealing is improved, but the complexity of the connection assembly increases
Solution Approach 1:
The pressure equalization cavity and sealing function are merged into a single integrated connection assembly, combining multiple functions (pressure damping, sealing, fluid conduction) into one compact structure without adding separate components
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 effectively reduces pressure pulse effects on the sealing abutment, extends the life of seals, and maintains turbocharger efficiency by retaining high pressures within the fluid conducting volume, while using simpler and less expensive sealing materials.
Implementation Method 1
a pressure reducing volume is at least partly formed in the connection surface... the pressure reducing volume is adapted to reduce pressure pulses from the fluid conducting volume
Implementation Method 2
the draining connection is adapted to provide a flow from the cavity to the second fluid conducting volume... the pressure in the first conducting volume is higher than the pressure in the second conducting volume
Data Source
AI summary
A conduit connection assembly includes a first conduit part and a second conduit part, assembled to form a conduit connection delimiting a first fluid conducting volume from a second fluid conducting volume. The first and second fluid conducting volumes communicate with each other via a pressure change inducing device. During use of the conduit connection assembly, the pressure in the first conducting volume is higher than the pressure in the second conducting volume. A cavity is formed between the first and second conduit parts at a distance from the first fluid conducting volume, and a draining connection is adapted to provide a communication between the cavity and the second fluid conducting volume. A slot, formed by the assembly of the two conduit parts, provides a communication between the first fluid conducting volume and the cavity.