Three-Pipe Vibration Damper Layout for Air Spring Space Conflicts
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Solution Overview
Problem
Existing motor vehicle vibration dampers with three-pipe dampers face challenges in efficiently managing the installation space for gas balance volumes and air springs, leading to compromised performance at both high and low frequencies.
Innovation Solution
The vibration damper incorporates a three-pipe damper design with a gas balance volume located in an annular space between the intermediate and container pipes, combined with an air spring that surrounds the central valve block, optimizing space utilization and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the gas balance volume is integrated into the three-pipe damper structure, then the space utilization is improved, but the installation space for the air spring is reduced
Solution Approach 1:
The gas balance volume is nested within the annular space between the intermediate pipe and container pipe of the three-pipe damper structure. This nesting approach allows the gas balance volume to be fully integrated into the existing damper structure without requiring additional external space, while the air spring is arranged around the central valve block to utilize available space efficiently.
Solution Approach 2:
The solution transitions from a one-dimensional linear arrangement to a three-dimensional spatial configuration by placing the gas balance volume in the annular space between pipes and surrounding the central valve block with the air spring. This multi-dimensional space utilization resolves the conflict between gas balance volume integration and air spring installation space.
2Adaptability or versatility
If the three-pipe damper is equipped with both gas balance volume and air spring, then the performance across frequency range is improved, but the device complexity increases
Solution Approach 1:
The three-pipe damper structure serves multiple functions: it provides the main damping function, accommodates the gas balance volume in its annular space, and allows the air spring to be arranged around the central valve block. This multi-functional design enables the single damper structure to handle both high-frequency and low-frequency vibrations effectively without requiring separate systems.
Solution Approach 2:
The gas balance volume and air spring are combined within the integrated three-pipe damper structure. The gas balance volume is placed in the annular space between the intermediate and container pipes, while the air spring surrounds the central valve block, merging multiple functional elements into a unified compact design that improves frequency range performance.
3Volume of moving object
If the gas balance volume is fully integrated into the three-pipe damper, then the space conflict is resolved, but the connection of hydraulic lines to the central valve block becomes more difficult
Solution Approach 1:
The hydraulic line connections are extracted from the internal central valve block area and positioned on the external surface of the container pipe. This extraction allows hydraulic lines to be connected to the central valve block from the outside, maintaining ease of manufacture and assembly even though the gas balance volume is fully integrated within the annular space between the intermediate and container pipes.
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 configuration enables comfortable vehicle operation across a wide frequency range, effectively addressing the space conflict and enhancing the damper's performance by fully integrating the gas balance volume and utilizing the air spring efficiently.
Implementation Method 1
During operation of the vibration damper, the gas bag provides separation between oil and gas. Moreover, the gas bag prevents the oil from foaming.
Implementation Method 2
The three-pipe damper has a gas balance volume at its piston rod end, which is arranged in an annular space between the intermediate pipe and the container pipe... partially surrounded by an air spring
Implementation Method 3
a damper piston, which can be moved back and forth in a main pipe with hydraulic medium in an axial direction relative to the main pipe
Data Source
AI summary
A vibration damper having a damper piston, which can be moved back and forth in a main pipe with hydraulic medium in an axial direction relative to the main pipe. The main pipe is arranged in a container pipe. An intermediate pipe is arranged between the main pipe and the container pipe. The main pipe, the intermediate pipe and the container pipe are arranged coaxially in a three-pipe damper. The damper piston is attached to an end of a piston rod. The three-pipe damper is equipped with a hydraulic end position damper. The three-pipe damper has a central valve block with two damper valve devices at its end facing away from the piston rod, which is partially surrounded by an air spring. The three-pipe damper has a gas balance volume at its piston rod end, which is arranged in an annular space between the intermediate pipe and the container pipe.