Laterally Tiltable Multitrack Vehicle Self-Uprighting
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Solution Overview
Problem
Existing laterally tiltable multitrack vehicles lack the ability to self-upright after tilting, which is essential for maintaining stability and reducing the risk of tipping over, especially in narrow designs where the centroid of the vehicle drops during lateral tilting.
Innovation Solution
A laterally tiltable multitrack vehicle design featuring a wheel pair with wheels suspended via wheel control parts connected by a double lever, allowing for adjustable pivot points that raise the centroid during tilting, enabling automatic self-uprighting into a stable position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the vehicle body and wheels are designed to tilt laterally during cornering, then the vehicle can maintain stability through centrifugal force balancing, but the centroid drops during tilting which prevents automatic self-uprighting
Solution Approach 1:
The suspension system employs dynamic geometry where the distance between pivot points of the control arms changes during tilting. As the vehicle body tilts laterally, the effective lever length increases, which raises the centroid position dynamically. This dynamic geometric transformation enables the vehicle to automatically return to upright position after lateral tilting while maintaining stability during cornering.
2Length of moving object
If all wheels are designed to tilt with the vehicle body, then the vehicle achieves narrower overall design with reduced installation space, but the suspension system becomes more complex
Solution Approach 1:
The control arms serve multiple functions simultaneously: they suspend the wheels from the vehicle body, enable lateral tilting of all wheels with the body during cornering, and provide the geometric mechanism for self-uprighting through variable pivot point distances. This multi-functionality achieves narrow vehicle design without proportionally increasing suspension system complexity.
3Length of moving object
If the vehicle is designed with narrow track width to reduce width, then the vehicle achieves compact dimensions for urban areas, but the risk of tipping over increases
Solution Approach 1:
The suspension system dynamically adjusts the centroid position during lateral tilting through variable lever length. When the vehicle tilts on a narrow track, the increasing effective lever length raises the centroid, which restores stability dynamically. This allows the vehicle to maintain anti-tip stability even with narrow track width suitable for compact urban vehicles.
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 vehicle achieves automatic self-uprighting and maintains stability by adjusting the effective lever length of the double lever, ensuring the centroid is raised, thus maintaining an upright position even at a standstill, while minimizing installation space and ensuring compactness.
Implementation Method 1
the centroid of the vehicle drops during lateral tilting of the vehicle body. This means, however, that the vehicle body of the laterally tilted, multitrack vehicle will not upright itself again automatically. An elegant possibility for achieving automatic uprighting of the laterally tilted vehicle body is to raise the centroid of the vehicle during lateral tilting as the tilting angle increases.
Data Source
AI summary
A laterally tiltable, multitrack vehicle is disclosed. The vehicle includes a vehicle body and at least three wheels. The first and second wheels are assigned to a common axle to form a first wheel pair. A first wheel control part suspends the first wheel of the wheel pair from the vehicle body and a second wheel control part suspends the second wheel of the wheel pair from the vehicle body. The first wheel control part is coupled to the second wheel control part via a double lever rotatably mounted on the vehicle body. At least two pivot points for the double lever can be defined on the vehicle body, the pivot points being spaced apart in a direction of a longitudinal extent of the double lever.