Vehicle Wheel Rim Miniature Pump for Dynamic Tire Pressure
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Solution Overview
Problem
Vehicle tire pressure changes during operation due to thermal effects and diffusion, leading to impaired driving behavior and rolling resistance, with insufficient pressure often only noticed during routine checks, necessitating a method for precise and dynamic adjustment.
Innovation Solution
Integration of an electrically operated miniature pump within the vehicle wheel rim allows for stepless adjustment of tire pressure in real-time, compensating for pressure losses and optimizing rolling resistance based on driving conditions, with the pump being easily integrated and activated within the rim's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tire pressure is adjusted manually during routine checks, then tire pressure can be checked, but driving behavior is impaired during ongoing operation due to thermal effects and diffusion
Solution Approach 1:
The system enables automatic self-adjustment of tire pressure through a control unit that monitors pressure sensors and activates a miniature pump when pressure drops below a threshold value, allowing the tire to regulate its own pressure without manual intervention
Solution Approach 2:
The system performs preliminary pressure adjustment by detecting pressure changes caused by thermal effects and diffusion during operation, and automatically compensates for these changes before they significantly impact driving behavior
2Adaptability or versatility
If a miniature pump is integrated in the rim, then tire pressure can be adjusted while driving, but the rim structure becomes more complex
Solution Approach 1:
The miniature pump, pressure sensor, and control unit are integrated within the existing rim structure, nesting these components into the rim's cavity space without requiring additional external components or significant structural modifications
Solution Approach 2:
The rim structure serves multiple functions: it provides structural support for the wheel, houses the miniature pump for pressure adjustment, contains the pressure sensor for monitoring, and acts as a mounting structure for all electronic components
3Loss of energy
If tire pressure is not adjusted dynamically, then the rim structure remains simple, but rolling resistance increases due to insufficient pressure
Solution Approach 1:
The system uses pressure sensors to continuously monitor tire pressure and provides feedback to a control unit, which automatically activates the miniature pump when pressure drops below a predetermined threshold, creating a closed-loop control system
Solution Approach 2:
The system replaces manual mechanical pressure adjustment with an automated electro-mechanical system consisting of electronic pressure sensors, a control unit, and an electrically operated miniature pump
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
Enables quick and precise adaptation of tire pressure to various driving situations, improving vehicle performance and durability by minimizing rolling resistance and allowing for rapid compensation of pressure changes, with the ability to adjust pressure in under 3 minutes.
Implementation Method 1
the rim (2) is equipped with at least one electrically operated miniature pump (6) for generating air pressure
Implementation Method 2
a stator element (15) is arranged on the hub and a rotor element (16) is arranged on the rim, electrical energy being generated when the rotor element rotates about the stator element (15)
Data Source
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Figure 5
AI summary
The aim of the invention is to provide a vehicle wheel, the driving behavior of which can be precisely adapted to the current driving situation in a simple manner during operation of the vehicle tire. This aim is achieved in that the rim (2) is equipped with at least one electrically operated miniature pump (6) for producing an air pressure, wherein during driving the tire pressure can be adapted to different driving situations by means of the miniature pump (6).