Crosswise Hydraulic Suspension for Active Roll Stabilization
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Solution Overview
Problem
Current wheel suspension systems for motor vehicles lack effective roll stabilization, particularly during cornering, as they fail to adequately manage unwanted rolling movements across axles.
Innovation Solution
A wheel suspension system with crosswise hydraulic connections between front and rear hydraulic cylinders, utilizing a reversing hydraulic pump to create pressure differences and active roll stabilization, combined with damping valves and accumulators to stabilize rolling movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If crosswise hydraulic connections are implemented between hydraulic cylinders on each axle, then roll stabilization is improved, but device complexity increases
Solution Approach 1:
The hydraulic system is segmented into separate hydraulic circuits for left and right wheels, with crosswise connections allowing independent control of each side while maintaining overall system stability through distributed hydraulic management
Solution Approach 2:
A hydraulic pump serves as an intermediary component that actively manages pressure distribution between crosswise-connected hydraulic cylinders, enabling roll stabilization by transferring hydraulic fluid between sides of the vehicle as needed
2Stability of the object's composition
If a hydraulic pump is added to create pressure differences for active roll stabilization, then roll stabilization is improved, but use of energy increases
Solution Approach 1:
The hydraulic pump operates periodically rather than continuously, activating only when roll stabilization is needed and using sensor feedback to determine when pressure adjustments are required, thereby reducing overall energy consumption
Solution Approach 2:
The system dynamically changes hydraulic pressure parameters in response to detected roll conditions, adjusting pressure differences between hydraulic cylinders only when necessary to counteract unwanted rolling movements
3Stability of the object's composition
If damping valve devices are incorporated into the hydraulic system, then roll stabilization is improved, but device complexity increases
Solution Approach 1:
Damping valve devices are merged with the existing hydraulic cylinder assemblies, integrating roll stabilization functionality into the wheel suspension components rather than adding completely separate systems, thereby reducing overall device complexity
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 system provides effective active roll stabilization and comfortable damping by actively managing pressure differences between hydraulic subsystems, enhancing vehicle stability during cornering and reducing unwanted rolling movements.
Implementation Method 1
By means of the hydraulic pump, a positive or negative pressure difference in the hydraulic system can be built up actively between the crosswise connected hydraulic cylinders
Implementation Method 2
The hydraulic cylinders in a hydraulic system are connected crosswise hydraulically on each axle
Data Source
AI summary
A wheel suspension system for a motor vehicle which includes a front axle having two front wheels, to each of which a front hydraulic cylinder is assigned, and a rear axle having two rear wheels, to each of which a rear hydraulic cylinder is assigned. The hydraulic cylinders in a hydraulic system are connected crosswise hydraulically. In order to implement active roll stabilization in a wheel suspension system, a hydraulic pump in the hydraulic system is connected hydraulically between the crosswise-connected hydraulic cylinders.