Adjustable Air Deflecting Device for Motor Vehicle Wheel Width Adaptation

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Solution Overview

Problem

Conventional air guiding devices for vehicles are not adaptable to different wheel widths, leading to complex and costly warehousing and assembly line logistics, as well as suboptimal aerodynamic performance due to inefficient airflow management around the wheels.

Innovation Solution

A method for an adjustable air guiding device with at least two air guide body elements that can be manually adjusted in the transverse direction to match the width of the vehicle wheel, allowing for optimal airflow direction and reduction of aerodynamic drag and lift.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional air guide devices with fixed dimensions are used, then the device structure is simple, but the device cannot be adapted to different wheel widths, leading to complex warehousing and assembly line logistics

Engineering Contradiction:
Improveadaptability to different wheel widthsVSAvoiddevice structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The air guide device is divided into multiple air guide body elements that can be selectively arranged and combined. This segmentation allows the device to be configured in different widths to match various wheel dimensions, providing adaptability without requiring completely different device designs for each wheel type.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The air guide device is designed as a universal multi-functional unit that can serve different wheel widths through selective configuration of its elements. A single type of air guide device can be used across multiple vehicle models and wheel configurations, eliminating the need for multiple specialized device types in warehousing and assembly.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple types of air guide devices are stocked for different wheel widths, then adaptability to various wheels is achieved, but warehousing and assembly line complexity increase

Engineering Contradiction:
Improveadaptability to different wheel widthsVSAvoidwarehousing and assembly line logistics
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The air guide device is designed as a universal multi-functional unit that can serve different wheel widths through selective configuration of its elements. A single type of air guide device can be used across multiple vehicle models and wheel configurations, eliminating the need for multiple specialized device types in warehousing and assembly.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The air guide device incorporates adjustable and reconfigurable elements that can be dynamically adapted during assembly to match the specific wheel width required. This dynamic configurability allows a single device type to replace multiple fixed-size devices, simplifying inventory management and assembly logistics.

Inventive Principle:
Principle #15Dynamics

3Ease of manufacture

If fixed-width air guide devices are used, then manufacturing and inventory management are simplified, but aerodynamic performance is suboptimal due to inefficient airflow management

Engineering Contradiction:
Improvemanufacturing and inventory managementVSAvoidairflow collision with wheel
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The air guide device is divided into multiple air guide body elements that can be selectively arranged and combined. This segmentation allows the device to be configured in different widths to match various wheel dimensions, providing adaptability without requiring completely different device designs for each wheel type.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The width and configuration parameters of the air guide device can be changed by selectively arranging its elements. This parameter adjustability enables optimization of airflow management for different wheel widths, reducing aerodynamic drag and improving overall vehicle aerodynamic performance.

Inventive Principle:
Principle #35Parameter changes

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 simplifies storage and assembly by using a single type of air guiding device, reduces air resistance, and improves aerodynamic performance by directing airflow parallel to the vehicle's longitudinal axis, thus enhancing the vehicle's aerodynamic efficiency and adaptability to various wheel configurations.

Implementation Method 1

the air guide device directs the airflow generated when the vehicle is moving forward past the wheel, particularly a front wheel, and/or along a wheel, particularly a front wheel, in such a way as to minimize flow losses and thus reduce air resistance

Methodology Applied
Scientific EffectAerodynamic flow direction:

Implementation Method 2

to minimize flow losses and thus reduce air resistance. Since it is generally not possible to completely shield the wheel from the airflow, the aim is to direct as much of the airflow as possible past the wheel and/or to align the airflow as parallel as possible to the longitudinal axis of the vehicle

Methodology Applied
Scientific EffectAerodynamic drag reduction: Drag

Data Source

PatentEP3544880B1Air deflecting device for use on the bottom of a motor vehicle
Publication Date: 2022.08.03 BAYERISCHE MOTOREN WERKE AG
  • EP3544880B1 patent drawingFigure 1~4

AI summary

An air deflecting device which is for use on the bottom of a motor vehicle (1) in front of a vehicle wheel (12, 13) and which comprises at least one air deflection member (2, 2') is characterized in that the air deflection member (20, 20') includes at least two air deflection member parts (22, 24) which allow the width of the air deflection member (20, 20') in the transverse vehicle direction (y) to be modified.