Rear Air Guide Device for Vehicle Aerodynamics
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Solution Overview
Problem
Existing rear air guide devices for vehicles impair the rear view and create aerodynamically unfavorable turbulence, which affects fuel consumption and visual appeal.
Innovation Solution
A rear air guide device with a pivotably mounted first air guide element that spans a gap with a second air guide element, designed to reduce wake space and improve aerodynamics by shifting the trailing edge of the air flow, while maintaining a flush arrangement with the roof and tailgate to minimize visual obstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the air guide element is extended beyond the vehicle contour to improve aerodynamics, then the aerodynamic performance is improved, but the rear view is impaired
Solution Approach 1:
The air guide element is designed to be movable between a retracted position (for good visibility) and an extended position (for improved aerodynamics). The control device enables dynamic adjustment based on driving conditions, allowing the system to optimize between visibility and aerodynamic performance as needed.
2Loss of energy
If the air guide element is extended to reduce wake space, then the aerodynamic performance is improved, but the visual appeal is reduced
Solution Approach 1:
The system dynamically adjusts the air guide element position based on driving conditions. During high-speed driving, the element extends to reduce wake space and improve aerodynamics. During low-speed or parking conditions, it retracts to maintain the vehicle's aesthetic appearance.
Solution Approach 2:
The control device changes the positional parameter of the air guide element based on detected driving conditions (speed, maneuver type). This parameter adjustment allows the system to optimize aerodynamic performance when needed while maintaining visual appeal during normal operation.
3Loss of energy
If the air guide element is made movable to improve aerodynamics, then the aerodynamic performance is improved, but the device complexity increases
Solution Approach 1:
The control device automatically detects driving conditions (such as speed and maneuver type) and autonomously determines when to extend or retract the air guide element. This self-service approach eliminates the need for manual intervention and simplifies the user interface while maintaining optimal aerodynamic performance.
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 reduces rear view impairment, enhances aerodynamics, and decreases fuel consumption by shifting the air flow trailing edge, while maintaining a visually appealing design and flexible storage options for the air guide elements.
Implementation Method 1
shifting the trailing edge of the air flow
Data Source
AI summary
The present disclosure provides a rear air guide device for a vehicle. The rear air guide includes a first air guide element and a control device that moves the first air guide element between a first terminal position and a second terminal position such that the first air guide element prolongs a car body element of the vehicle. The first air guide element is pivotably mounted to the car body element such that first air guide element pivots between the first terminal position and the second terminal position. The rear air guide further includes a second air guide element coupled to the first air guide element. When the first air guide element is set at the second terminal position, the second air guide element spans a gap between the first air guide element and the car body element.