Tire Pressure Control for Lateral Slope Stability
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Solution Overview
Problem
Existing methods for vehicle systems with towed agricultural implements fail to prioritize optimal traction and directional stability on lateral slopes, as they focus on maintaining parallelism rather than adjusting tire inflation pressure to compensate for transverse inclination.
Innovation Solution
A method that determines inclination information and calculates wheel loads to derive required tire inflation pressure, allowing for asymmetry compensation by adjusting tire pressure, ensuring balanced tire contact areas and improved traction and stability through a control unit and tire inflation system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tire inflation pressure is adjusted to compensate for transverse inclination, then traction and directional stability are improved, but device complexity increases due to additional sensors and control systems
Solution Approach 1:
The control unit is designed to perform multiple functions: it not only controls the tire inflation system but also determines cross-slope values and calculates wheel loads. This multi-functionality reduces the need for separate dedicated systems, thereby limiting the increase in device complexity while achieving improved traction and stability through active tire pressure management
Solution Approach 2:
The system uses cross-slope sensors to provide feedback about the vehicle's lateral inclination to the control unit. This feedback loop enables the control unit to automatically adjust tire inflation pressure in response to detected slope conditions, improving traction and directional stability without requiring constant manual intervention or overly complex control mechanisms
2Force
If asymmetric tire inflation is applied to compensate for slope, then wheel load distribution is optimized, but manufacturing precision requirements increase for the inflation system
Solution Approach 1:
The tire inflation system is designed to dynamically adjust pressure levels based on real-time slope conditions rather than requiring fixed precision settings. The control unit continuously monitors cross-slope values and modifies inflation pressure accordingly, allowing the system to adapt to varying terrain conditions without demanding extremely high manufacturing precision for each component
Solution Approach 2:
The system changes the inflation pressure parameter asymmetrically between left and right tires based on the detected cross-slope. By adjusting this single parameter dynamically, the system optimizes wheel load distribution without requiring complex mechanical adjustments or high-precision manufacturing tolerances for the inflation components themselves
Data Source
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AI summary
Method for determining tire inflation pressure for a vehicle system, in which a control unit determines, in a first step (100), inclination information regarding a lateral inclination and/or change in lateral inclination of the vehicle system along a preceding route, wherein, in a second step (102), the control unit calculates wheel loads occurring individually for each wheel according to the determined inclination information, in order to derive, in a third step (104), a tire inflation pressure required to maintain a specified tire contact area.