Vehicle Exhaust Filter Ambient Air Purification
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Solution Overview
Problem
Current vehicle exhaust systems are inadequate in reducing particulate levels in ambient air, as they primarily focus on exhaust gas purification during vehicle operation and do not effectively utilize filters when the vehicle is parked.
Innovation Solution
A vehicle ambient air purification arrangement that uses a controller to convey ambient air through the exhaust gas treatment system's filters when the engine is off and a sufficient voltage is supplied, allowing particulates to be collected even when the vehicle is parked, utilizing a combination of power grid, battery charging, solar, and wind energy for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vehicle exhaust system uses filters during operation, then exhaust gas purification is improved, but the filters are not utilized when the vehicle is parked, reducing overall particulate reduction effectiveness
Solution Approach 1:
The system performs preliminary action by activating the air conveying apparatus and filters before the vehicle is driven, during the parked state with external power supply. This allows the filters to accumulate and capture particulates from ambient air in advance, so that when the vehicle is subsequently operated, the filters are already loaded with captured particulates, extending their effective utilization duration and overall productivity.
2Productivity
If the air conveying apparatus is activated to convey ambient air through filters, then particulate collection is improved, but energy consumption increases
Solution Approach 1:
The system applies self-service by utilizing the vehicle's own battery and power grid connection to drive the air conveying apparatus during parked periods. The battery, which would otherwise be charging or idle, is used to power the filtration system, and the system automatically controls operation based on engine state and voltage thresholds. This allows the vehicle to service its own air purification needs without requiring external energy sources during operation.
3Productivity
If the system operates the air conveying apparatus continuously, then particulate removal is maximized, but the voltage threshold condition limits operation when electricity is insufficient
Solution Approach 1:
The system applies dynamics by making the air conveying apparatus operation conditional and adaptive. The controller monitors engine operational state and battery voltage levels, dynamically adjusting when the filtration system operates. The apparatus activates only when the engine is off and voltage exceeds the threshold, creating a flexible operating regime that adapts to real-time system conditions rather than running continuously or never.
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 solution significantly reduces particulate levels in the air by actively using filters for a larger duration, including when the vehicle is parked, and ensures efficient particulate collection using ceramic filters and optional particle separators, thereby enhancing air quality.
Implementation Method 1
the controller is arranged to control the air conveying apparatus to convey ambient air through the ducts and filters of the exhaust gas treatment system
Data Source
AI summary
A vehicle ambient air purification arrangement, a vehicle, a vehicle fleet and a method for purifying air ambient to a vehicle are provided. The arrangement comprises an air conveying apparatus and a controller. The controller is arranged to control the air conveying apparatus to convey ambient air through ducts and filters of a vehicle exhaust gas treatment system in response to a determination that a combustion engine is inoperative and that a voltage supplied to the arrangement exceeds a threshold voltage.