Motorcycle Air Guide Venting for Stable Cornering Aerodynamics
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Solution Overview
Problem
Conventional aerodynamic airfoil devices on motorcycles generate negative aerodynamic forces during cornering or leaning, causing the vehicle to be pulled or pushed out of the curve, negatively affecting rideability.
Innovation Solution
Incorporating laterally arranged air guide elements with internal flow channels and strategically positioned air inlets and outlets to manage pressure gradients, allowing air to escape and mitigate these forces by creating overpressure on the inner side during leaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional winglets are used to generate downforce, then aerodynamic stability is improved, but negative aerodynamic forces occur during cornering that push the motorcycle out of the curve
Solution Approach 1:
The patent extracts the harmful airflow along the inner sash by providing an escape path through the air guide element. The flow channel connects the high-pressure region inside the motorcycle to the outside, allowing air to escape through openings in the air guide element, thereby removing the harmful aerodynamic forces that occur during cornering while preserving the downforce-generating capability of the winglet structure
Solution Approach 2:
The air guide element acts as an intermediary structure that mediates between the high-pressure interior and the exterior airflow. It provides a controlled path for air to escape, transforming the harmful pressure differential into a beneficial flow management system that eliminates negative aerodynamic forces during leaning without compromising overall aerodynamic stability
2Force
If air inlets are positioned to maximize downforce, then aerodynamic grip is improved, but pressure gradients during cornering create unwanted airflow through the air guide element
Solution Approach 1:
The patent implements a dynamic airflow management system where the air guide element's flow channel and openings are designed to respond to changing pressure conditions. During straight-line travel, normal downforce is generated. During cornering, the dynamic pressure gradient automatically activates the escape path, allowing air to flow through the air guide element only when needed, thus adapting the aerodynamic behavior to the motorcycle's operating state
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 solution effectively reduces negative aerodynamic forces during cornering by utilizing pressure differentials to redirect airflow, enhancing rideability and maintaining optimal aerodynamics.
Implementation Method 1
the fact that there is a higher pressure on the inside of the motorcycle than on the outside when cornering is used for this purpose. In particular, an overpressure is created on the road side, i.e., on the inside, for example at the front edge of the fairing, if present, which can cause a flow from the air inlet via the internal flow channel to the air outlet
Implementation Method 2
the air guide element has an internal flow channel which ends at an outer surface of the air guide element in an opening which acts as an air outlet, and wherein the flow channel is connected or can be connected in a fluid-conducting manner to an air inlet
Data Source
AI summary
A motorcycle-type vehicle has at least one laterally arranged air guide element. The air guide element has an internal flow channel which ends at an outer surface of the air guide element in an opening which acts as an air outlet. The flow channel is connected or can be connected in a fluid-conducting manner to an air inlet which is formed or arranged at a distance from the air guide element.