Airflow Adjusting Apparatus for Vehicle Stability
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Solution Overview
Problem
Existing airflow adjusting systems for vehicles fail to effectively manage lifting forces during crosswinds and curved road conditions, leading to unstable vehicle behavior and reduced fuel efficiency.
Innovation Solution
An airflow adjusting apparatus comprising a downward airflow generator and a rearward airflow generator, controlled by a controller that switches between lifting-force increase and lifting-force suppression modes, using plasma actuators to generate airflows that either increase or decrease the lifting force on the vehicle, thereby stabilizing the vehicle and improving fuel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single airflow generator is used to manage lifting force, then the device complexity is reduced, but the adaptability to different driving conditions (crosswinds, curved roads, straight roads) deteriorates
Solution Approach 1:
The airflow control system is segmented into two independent airflow generators: a downward airflow generator positioned at the front edge and a rearward airflow generator positioned at the lower surface. This segmentation allows each generator to independently manage different aspects of lifting force under varying driving conditions, thereby improving adaptability without significantly increasing overall system complexity.
Solution Approach 2:
The system dynamically switches between different airflow generator configurations based on detected driving conditions. The controller activates or deactivates specific airflow generators in real-time according to whether the vehicle is experiencing crosswinds, traveling on curved roads, or traveling on straight roads, enabling adaptive response to changing environmental conditions.
2Stability of the object's composition
If the downward airflow generator is activated to increase lifting force, then vehicle stability is improved, but energy consumption increases
Solution Approach 1:
The system dynamically activates the downward airflow generator only when vehicle stability is compromised, such as during crosswinds or curved road travel. During normal straight-road conditions, the system deactivates the generator, thereby maintaining vehicle stability only when necessary and significantly reducing energy consumption during routine operation.
Solution Approach 2:
The airflow generator operates in periodic intervals rather than continuously, activating only during detected unstable conditions and remaining inactive during stable driving conditions. This periodic operation pattern maintains vehicle stability when needed while minimizing overall energy consumption throughout the driving cycle.
3Speed
If plasma actuators are used to generate airflow, then the response speed is improved, but the manufacturing complexity increases
Solution Approach 1:
The system replaces traditional mechanical airflow control mechanisms (such as movable flaps or adjustable spoilers) with plasma actuators. Plasma actuators generate airflow through electrohydrodynamic forces without moving parts, achieving rapid response speeds while simplifying the manufacturing process by eliminating complex mechanical assemblies, moving components, and precision mechanical linkages.
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 system effectively stabilizes the vehicle by managing lifting forces during crosswinds and curved road conditions, improving fuel efficiency and reducing rolling resistance by generating air curtains or promoting airflow under the vehicle, and enhances stability by adjusting airflow velocities.
Implementation Method 1
The plasma actuator uses plasma discharge to generate the airflow
Data Source
AI summary
An airflow adjusting apparatus includes a downward airflow generator, a rearward airflow generator, and a controller. The downward airflow generator is configured to generate an airflow, and is disposed at a front edge of a movable body to generate the airflow traveling in downward direction. The rearward airflow generator is configured to generate an airflow, and is disposed at a lower surface of the movable body to generate the airflow traveling in a rearward direction. The controller is configured to perform switching between a lifting-force increase control and a lifting-force suppression control in accordance with a state of the movable body to execute one of the controls. The lifting-force increase control is a control of activating the downward airflow generator and deactivating the rearward airflow generator. The lifting-force suppression control is a control of deactivating the downward airflow generator and activating the rearward airflow generator.