Active Tire Pressure Control for EV Traction-Range Balance
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Solution Overview
Problem
Electric vehicle drivers experience range anxiety due to the shorter range of electric vehicles compared to gas-fueled cars, fewer charging stations, and long charging times, and there is a tradeoff between tire traction and driving range, making it difficult to balance these factors effectively.
Innovation Solution
The implementation of active tire orientation and pressure adjustment systems that automatically adjust tire orientation and pressure based on various activation conditions, such as battery level, terrain, and navigational data, to balance driving range and tire traction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high traction tires are used to maximize handling performance, then friction and grip between the ground and the vehicle are improved, but driving range deteriorates due to increased rolling resistance
Solution Approach 1:
The patent applies dynamics by making the tire pressure adjustable and controllable in real-time. The system dynamically changes tire pressure based on driving conditions, terrain type, and battery charge level. This allows the tire to transition between different pressure states - higher pressure for low rolling resistance during normal driving to extend range, and lower pressure for high traction during winter or performance driving, thus resolving the contradiction between handling performance and driving range.
2Use of energy by moving object
If low rolling resistance tires are used to extend driving range, then energy consumption is reduced, but tire traction and handling performance deteriorate
Solution Approach 1:
The patent applies parameter changes by modifying the tire pressure parameter based on driving conditions. The system monitors various parameters including battery charge level, driving mode, and terrain type, then adjusts tire pressure accordingly. By changing the pressure parameter, the system can optimize for either low rolling resistance (higher pressure) to extend range or high traction (lower pressure) for improved handling, thus resolving the contradiction between energy efficiency and performance.
3Use of energy by moving object
If tire pressure is increased to reduce rolling resistance, then driving range is improved, but tire traction and grip deteriorate
Solution Approach 1:
The patent applies feedback by implementing a control system that continuously monitors driving conditions, battery charge level, and terrain type, then adjusts tire pressure accordingly. The system receives feedback about the current state and makes real-time adjustments to optimize the balance between rolling resistance and traction. This closed-loop control allows the system to maintain optimal pressure for range extension during normal driving while automatically increasing pressure for better traction when needed, resolving the contradiction between energy efficiency and tire grip.
Data Source
AI summary
Active tire orientation and pressure adjustment systems and methods of use in response to a plurality of activation conditions can ensure efficient tire orientation and pressure modes are active when necessary to balance tire traction and driving range of an electric vehicle. The activation conditions can be customized based on driver preferences to help ease range anxiety while providing a balance with vehicle traction.