Vehicle Height Adjusting System for Uneven Road Stability
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Solution Overview
Problem
Existing vehicle-height adjusting systems face challenges in maintaining vehicle stability and reducing inclination when transitioning from uneven to even road surfaces, as they often require different air pressures for front and rear wheels, leading to uneven vehicle heights and potential body inclinations.
Innovation Solution
A vehicle-height adjusting system that uses air as a pressure medium, with left and right vehicle-height adjusting actuators receiving substantially the same amount of pressure medium, allowing for synchronized height adjustments across all wheels to ensure smooth passage over uneven roads and minimize body inclination on even roads, by controlling air supply and discharge based on tank pressure and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If different air pressures are supplied to front and rear wheels to adjust vehicle height, then vehicle height adjustment is achieved, but vehicle body inclination occurs and stability deteriorates
Solution Approach 1:
The system divides the vehicle into four independent wheel units (front-left, front-right, rear-left, rear-right), each with its own air cylinder and height control mechanism. This segmentation allows independent height adjustment of each wheel, enabling the vehicle to navigate uneven terrain while maintaining overall body stability by adjusting individual wheels rather than applying uniform pressure changes that cause inclination.
2Adaptability or versatility
If vehicle height is increased to pass through uneven road, then passage capability is improved, but vehicle body inclination increases when returning to even road
Solution Approach 1:
The system dynamically adjusts vehicle height in real-time based on road conditions detected by sensors. When encountering uneven terrain, the system increases height of affected wheels to maintain ground clearance and passage capability. When returning to even road, it dynamically reduces height back to normal levels, ensuring the vehicle body returns to a horizontal position. This dynamic adaptation resolves the contradiction between maintaining passage capability and preventing body inclination.
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 system effectively allows vehicles to pass through uneven terrain without significant body inclination, ensuring stable and horizontal positioning on even surfaces by maintaining equal vehicle heights across diagonally opposite wheels, thus enhancing ride comfort and safety.
Implementation Method 1
substantially the same amount of pressure medium is to be supplied to the left vehicle-height adjusting actuator and the right vehicle-height adjusting actuator
Implementation Method 2
control supply and discharge of air to and from an air cylinder such that an actual vehicle height for a wheel as an actual vehicle height is brought closer to a target vehicle height
Data Source
AI summary
A vehicle-height adjusting system includes: vehicle-height adjusting actuators each for adjusting a vehicle height for a corresponding one of wheels; a pressure medium supplier for supplying a pressure medium from a tank to each of the vehicle-height adjusting actuators; and a vehicle height adjuster for adjusting the vehicle height for each wheel. The vehicle-height adjusting actuators include a left vehicle-height adjusting actuator and a right vehicle-height adjusting actuator. The vehicle height adjuster includes a supply amount controller configured to control the pressure medium supplier such that substantially the same amount of the pressure medium is to be supplied from the tank to the left vehicle-height adjusting actuator and the right vehicle-height adjusting actuator, when at least one of the wheels is in contact with an uneven road surface.