Vehicle Front End Duct Structure for Aerodynamic Cooling

Solution Overview

Problem

Conventional front end structures for vehicles face challenges in maintaining adequate air flow to the radiator while reducing drag and open facia area for improved aerodynamics and fuel economy, often resulting in insufficient air flow through bottom ducting.

Innovation Solution

A front end structure featuring a duct member that directs air flow from an underside inlet to the radiator, with supplemental duct openings to enhance airflow, and auxiliary duct members to ensure efficient air distribution, minimizing direct airflow through the facia member.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the open area through the vehicle's front facia is reduced to improve aerodynamics and fuel economy, then aerodynamic performance is improved, but air flow to the radiator becomes insufficient

Engineering Contradiction:

Improvefuel economyVSAvoidair flow to radiator

Core Design Contradiction:

Loss of energyVSQuantity of substance

Solution Approach 1:

The air intake system is segmented into multiple pathways: the bottom breather duct provides primary airflow from the underside, while supplemental duct openings in the duct member provide additional airflow paths. This segmentation allows the front facia to be largely closed for aerodynamics while still delivering adequate total airflow to the radiator through distributed intake points

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention transitions from traditional front-facing air intake (two-dimensional facia opening) to three-dimensional multi-point intake including bottom breather openings and supplemental openings in the duct member. This dimensional expansion allows airflow to be gathered from multiple spatial locations, maintaining cooling efficiency while reducing front facia opening area

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Force

If a bottom breather duct is employed to reduce open facia area, then aerodynamic drag is reduced, but air flow from the bottom ducting to the radiator becomes insufficient

Engineering Contradiction:

Improveaerodynamic dragVSAvoidair flow from bottom ducting to radiator

Core Design Contradiction:

ForceVSQuantity of substance

Solution Approach 1:

The invention merges multiple airflow sources and pathways into a unified cooling system: the bottom breather duct is combined with supplemental duct openings in the duct member, creating a hybrid intake system that captures airflow from both the bottom and side regions, thereby increasing total airflow to the radiator while maintaining aerodynamic benefits

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The duct member acts as an intermediary component that receives airflow from the bottom breather duct and supplements it with additional airflow through its own openings. This intermediary structure facilitates the combination of multiple airflow sources and directs the combined flow to the radiator, resolving the insufficiency of single-source bottom ducting

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This configuration increases airflow efficiency to the radiator, enhancing engine cooling while reducing drag and maintaining improved aerodynamics and fuel economy.

Implementation Method 1

A front end structure for a vehicle includes a facia member defining a forward end of an engine compartment of the vehicle and a radiator disposed in the engine compartment rearwardly spaced from the facia member. A duct member is interposed between the facia member and the radiator. The duct member at least partially blocks the radiator and defines a duct passage extending from an underside opening of the vehicle to the radiator.

Methodology Applied

Scientific EffectPressure gradient: Pressure Gradient

Implementation Method 2

At least one duct opening is defined in the duct member for supplementing air flow to the radiator from the underside opening.

Methodology Applied

Scientific EffectConvection: Convection

Data Source

PatentUS8708075B2Front end structure for vehicle

Publication Date: 2014.04.29 HONDA MOTOR CO LTD

AI summary

A front end structure for a vehicle includes a facia member defining a forward end of an engine compartment of the vehicle and a radiator disposed in the engine compartment rearwardly spaced from the facia member. A duct member is interposed between the facia member and the radiator. The duct member at least partially blocks the radiator and defines a duct passage extending from an underside opening of the vehicle to the radiator. At least one duct opening is defined in the duct member for supplementing air flow to the radiator from the underside opening.