Rotatable Air Guide Device for Vehicle Front Diffuser Aerodynamics

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing front diffusers for vehicles lack efficient aerodynamic control and contamination prevention in the region of the front wheels, with current designs often requiring significant space and actuating forces, and failing to effectively manage airflow and ventilation.

Innovation Solution

A rotatable air guide device with a diffuser wall and a kinked, convex second external face, configured to move between positions within the diffuser duct, minimizing space and actuating forces, and featuring a compact surface to prevent contamination and improve aerodynamics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a rotatable air guide device is moved into the diffuser duct, then airflow management and contamination prevention are improved, but space requirements and actuating forces increase

Engineering Contradiction:

Improveairflow management capabilityVSAvoidspace requirement

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The air guide device is designed to be rotatable between different positions (first rotary position facing the diffuser duct, second rotary position facing away), allowing dynamic adaptation of airflow management based on operational requirements while maintaining a compact form factor that minimizes space occupation

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The air guide device changes its orientation parameter by rotating between predefined positions, enabling variable airflow control without requiring additional space or complex mechanisms, thus resolving the contradiction between adaptability and volume

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If a rotatable air guide device is moved into the diffuser duct, then airflow management and contamination prevention are improved, but actuating forces required increase

Engineering Contradiction:

Improveairflow management capabilityVSAvoidactuating force

Core Design Contradiction:

Adaptability or versatilityVSForce

Solution Approach 1:

The device uses a simple rotatable mechanism with predefined positions rather than complex actuation systems, enabling airflow management adaptability while minimizing the actuating force required through efficient mechanical leverage and position-based control

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

By changing the orientation parameter through rotation rather than linear movement, the device achieves airflow control with reduced actuating forces, as rotational motion requires less force compared to pushing or pulling mechanisms

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If the second external face runs parallel to the first external face, then manufacturing is simplified, but aerodynamic performance and contamination prevention are reduced

Engineering Contradiction:

Improvemolding simplicityVSAvoidaerodynamic control

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The air guide device features a kinked second external face that is not parallel to the first external face, creating localized aerodynamic optimization in specific regions while maintaining overall manufacturing feasibility through a single molded piece construction

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The device combines a molded structure with a kinked geometry that integrates both manufacturing considerations and aerodynamic performance, using a unified material construction that achieves complex surface geometry without assembly steps

Inventive Principle:

Principle #40Composite materials

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 enables efficient airflow management, reduces lift and air resistance, and prevents contamination, while requiring minimal space and actuating forces, enhancing the vehicle's aerodynamic performance and maintaining a clean internal environment.

Implementation Method 1

an air guide device (40) mounted so as to be rotatable about a predefined rotation axis (42) and configured to, by way of a rotating movement, move from a first rotary position (45) at least partially into the diffuser duct (30) to a second rotary position (46)

Methodology Applied

Scientific EffectRotation:

Data Source

PatentUS10807655B2Front diffuser for a vehicle

Publication Date: 2020.10.20 DR ING H C F PORSCHE AG

AI summary

A front diffuser for disposal in a region of an underbody cladding of a vehicle includes a diffuser wall defining a diffuser duct having an inflow side and an outflow side and an air guide device mounted so as to be rotatable about a predefined rotation axis and configured to, by way of a rotating movement, move from a first rotary position at least partially into the diffuser duct to a second rotary position and move from the second rotary position at least partially out of the diffuser duct to the first rotary position. The air guide device is configured as a molding and includes a first external face and a second external face.