Air Guiding Device With Segmented Wheel House Grille
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Solution Overview
Problem
Existing air guiding devices for motor vehicles do not effectively utilize radiator outlet air for cooling wheel brakes while also optimizing aerodynamics and reducing drag and lifting effects.
Innovation Solution
An air guiding device with a wheel house grille featuring differently positioned air guiding slats and a deflecting blade that directs radiator outlet air both inside and outside the vehicle, ensuring efficient cooling of the wheel brake and optimizing aerodynamics by guiding air flows in a manner that reduces drag and lifting effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If radiator outlet air is guided entirely to the wheel brake, then brake cooling efficiency is improved, but aerodynamic drag and lifting effects increase
Solution Approach 1:
The air guiding device segments the radiator outlet air flow into two separate paths using differently positioned air guiding slats. One path directs air to the wheel brake for cooling, while the other path guides air upward to the vehicle outside to minimize aerodynamic drag and lifting effects. This segmentation allows independent optimization of both cooling efficiency and aerodynamic performance.
Solution Approach 2:
Different regions of the wheel house grille are assigned different functions through locally optimized air guiding slat positions. The inner slats are positioned to direct air inward toward the brake, while outer slats are positioned to direct air outward and upward. This local differentiation enables each region to contribute optimally to its specific function, resolving the contradiction between cooling and aerodynamics.
2Productivity
If air guiding slats are positioned to maximize brake cooling, then cooling efficiency is improved, but aerodynamic performance deteriorates
Solution Approach 1:
The air guiding slats are segmented into different positional groups within the wheel house grille. Inner slats are optimized for directing air to the brake cooling area, while outer slats are optimized for directing air upward to reduce aerodynamic drag. This segmentation enables the system to achieve both high cooling effectiveness and low aerodynamic energy loss simultaneously.
Solution Approach 2:
The air guiding slats utilize different angular parameters and positions to optimize their respective functions. By varying the orientation and position parameters of slats across the grille, the system achieves optimal balance between directing sufficient air flow to the brake for cooling while maintaining favorable aerodynamic characteristics that reduce drag and energy loss.
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 air guiding device effectively utilizes radiator outlet air for wheel brake cooling, improving cooling efficiency while minimizing aerodynamic drag and lifting effects, and ensures a high-speed air supply to the brake, even in variants with lower engine capacities or reduced cooling requirements.
Implementation Method 1
The air guiding slats in the wheel house grille and the deflecting blade downstream of the air guiding slats guide part of the outlet air flow to the vehicle inside and guide a further part of the outlet air flow to the vehicle outside.
Implementation Method 2
A deflecting blade is arranged in the wheel house of the vehicle downstream of the wheel house grille and is intended to direct the radiator outlet air toward the wheel brake.
Data Source
AI summary
An air guiding device is arranged in a front end part of a motor vehicle and has an air guiding duct containing a radiator unit through which fresh air flows. A wheel house grille is arranged in the guiding duct downstream of the radiator unit. The wheel house grille has differently positioned air guiding slats for the passage of radiator outlet air. The air guiding slats are positioned so that part of the radiator outlet air is guided to the vehicle outside and a further part of the radiator outlet air can be supplied to the vehicle inside and via a deflecting blade to a wheel brake for cooling. The air guiding slats may also be closed over subregions by means of a facing such that no outlet air can flow through the slats in the subregions.