Electrostatic Tire Particle Capture Near the Wheel Contact Point
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Solution Overview
Problem
Current technologies fail to effectively capture and control particulate emissions from vehicle tires and rail wheels, which contribute significantly to air pollution and environmental degradation, particularly due to the lack of policies addressing non-exhaust sources like tire and wheel wear.
Innovation Solution
A particulate collecting device positioned near the tire or wheel contact point captures particulates through electrostatic attraction, utilizing a filter unit with collector electrodes and a charging circuit to collect and store particulates, with optional features including a nozzle for airflow enhancement, a filter mesh for size control, and a control module for optimizing operation based on driving conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If electrostatic filter unit with collector electrodes is used to capture particulates, then particulate collection efficiency is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical filtration systems with an electrostatic field-based collection mechanism. Collector electrodes generate electrostatic forces that attract and capture charged particulates, eliminating the need for complex mechanical filters while achieving high collection efficiency for fine particulates
Solution Approach 2:
The patent changes the physical state and properties of the collection mechanism by using electrostatic fields instead of mechanical barriers. By controlling voltage parameters on collector electrodes, the system dynamically adjusts particulate capture without mechanical complexity
2Productivity
If filter unit is positioned in close proximity to the driving surface, then particulate capture effectiveness is improved, but risk of damage from debris and water increases
Solution Approach 1:
The patent employs a wheel arch liner as a protective shell that houses the electrostatic filter unit. This flexible or semi-rigid structure protects the delicate collector electrodes from direct exposure to road debris, water, and physical damage while maintaining proximity to the tire contact point for effective particulate capture
Solution Approach 2:
The wheel arch liner acts as an intermediary protective layer between the electrostatic filter unit and the harsh environment. It allows the filter to operate close to the driving surface for high effectiveness while shielding it from damaging elements
3Productivity
If multiple components (charging circuit, collector electrodes, filter mesh, nozzle) are integrated, then particulate collection performance is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The patent integrates multiple functions into a single wheel arch liner structure that serves as both a protective shell and a housing for the electrostatic filter unit. The liner incorporates mounting structures for electrodes, integrated airflow channels replacing separate nozzles, and filtration capabilities, reducing the number of separate components and simplifying manufacturing
Solution Approach 2:
The patent combines the protective wheel arch liner with the electrostatic filter housing into a single integrated structure. This merging of functions reduces assembly steps, lowers manufacturing complexity, and decreases the number of parts while maintaining all necessary filtration functions
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 device effectively reduces particulate emissions by capturing a significant proportion of tire and wheel particulates at their source, improving air quality and enabling controlled disposal or recycling, while minimizing power consumption and maintaining compactness.
Implementation Method 1
one or more collector electrodes arranged substantially perpendicular to the flow or airflow... A charging circuit is connected to the one or more collector electrodes and operable to output or apply a charging voltage or a reference voltage to one or more of the collector electrodes
Data Source
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AI summary
A particulate collecting device (100) attachable to a vehicle for collecting or capturing particulates that are released from a tyre or a wheel (W) of the vehicle through wear on or against a driving surface (S) when the vehicle is driven on the driving surface. The device comprises an electrostatic filter unit (110) mountable in an operative position in close proximity to the tyre or the wheel of the vehicle for receiving a flow of particulates (FI) from a contact point (CP) between the tyre or wheel and the driving surface. The filter unit (110) is configured to collect or capture the particulates in the flow by electrostatic attraction.