Hydropneumatic Spring Damper for Vehicle Height Adjustment
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Solution Overview
Problem
Current vehicle suspension systems lack a simple and cost-effective method for height adjustment of the vehicle body, often requiring complex and weight-intensive systems.
Innovation Solution
A spring damper apparatus utilizing a hydropneumatic system with a partition element, fluid, and gas spring, along with a sliding element for fluid volume adjustment, allows for easy height adjustment without additional compression of the gas spring, using a partially or fully supporting hydropneumatic system in conjunction with a mechanical spring for load absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex height adjustment system is used, then height adjustment capability is achieved, but device complexity and weight increase
Solution Approach 1:
The patent combines the height adjustment function with the existing suspension system by integrating a sliding element into the hydropneumatic system. The sliding element moves along the piston rod to adjust fluid distribution between chambers, enabling height adjustment without requiring a separate complex adjustment mechanism. This merging approach achieves adaptability while minimizing additional device complexity.
Solution Approach 2:
The hydropneumatic system serves multiple functions: it provides suspension, damping, and height adjustment capabilities through a single integrated structure. The sliding element, when moved, simultaneously adjusts the fluid volume in chambers to achieve height adjustment while the gas spring continues to provide suspension and damping functions, eliminating the need for separate dedicated adjustment systems.
2Ease of operation
If fluid volume is changed for height adjustment, then height adjustment is achieved, but gas spring compression may increase
Solution Approach 1:
The hydropneumatic system is divided into separate chambers (first chamber and second chamber) separated by a partition element. The sliding element can independently adjust fluid volume in each chamber by moving along the piston rod, allowing selective fluid transfer between chambers. This segmentation enables height adjustment through fluid redistribution rather than overall volume change, preventing unnecessary gas spring compression while achieving the desired height adjustment.
3Reliability
If a supporting hydropneumatic system is used, then load absorption is improved, but height adjustment range may be limited
Solution Approach 1:
The sliding element is designed to move dynamically along the piston rod to adjust fluid distribution between chambers in real-time. This dynamic adjustment mechanism allows the system to adapt fluid volume allocation according to different height requirements while maintaining load support functionality. The gas spring remains preloaded for reliable load absorption, while the sliding element provides continuous height adjustment range by redistributing fluid volume between chambers during operation.
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
Enables rapid and extensive height adjustment of the vehicle body, improving drivability and preventing excessive stiffening during wheel movements, while maintaining low costs and space requirements.
Implementation Method 1
In the first chamber, a fluid acting on the partition element is accommodated
Implementation Method 2
In the second chamber, a gas acting on the partition element is accommodated, by means of which a gas spring of the hydropneumatic system is formed
Implementation Method 3
a piston which is shiftably accommodated in the housing and which acts on the fluid accommodated in the housing
Implementation Method 4
by shifting of the sliding element relative to the housing, at least a portion of the fluid accommodated in the housing can be conveyed out of the housing, and additional fluid can be conveyed into the housing
Data Source
AI summary
A spring damper apparatus for a vehicle, with a hydropneumatic system, via which a wheel of the vehicle can be braced spring-mounted and damped on a body of the vehicle. The hydropneumatic system includes a first chamber delimited at least partially by a partition element, in which a fluid acting on the partition element is accommodated. In addition, the hydropneumatic system includes a second chamber separated from the first chamber by the partition element and delimited by the partition element, in which a gas forming a gas spring and acting on the partition element is accommodated. In addition, the hydropneumatic system includes a housing in which the fluid is accommodated. In addition, the hydropneumatic system includes a piston shiftably accommodated in the housing and acting on the fluid, via which piston the wheel can be braced on the body.