Agricultural Vehicle Fan Shroud Segmentation for Cooling and Access

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Solution Overview

Problem

Agricultural vehicle engine cooling systems face inefficiencies due to high air resistance and maintenance challenges caused by gaps between fan shrouds and radiators, requiring larger fans or leading to overheating, and inconvenient access for maintenance.

Innovation Solution

A complete fan shroud system formed by an upper shroud part, removable side panels, and a mounting plate that directs air parallel to the vehicle's longitudinal axis, allowing direct air flow to radiators without extra parts and enabling easy access without removing the bonnet.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If radiators are arranged in series under the vehicle bonnet with a fan at the front, then air cooling can be achieved, but air flow resistance increases and may cause overheating

Engineering Contradiction:

Improveradiator cooling effectivenessVSAvoidair flow resistance

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

The fan shroud is divided into a fixed front portion and a removable rear portion, allowing the air flow path to be segmented into a controlled section (through the shroud) and an accessible section (behind the shroud). This segmentation reduces overall air flow resistance by providing a direct path while maintaining cooling effectiveness.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The fan shroud is designed with a removable rear portion that can be taken off to change the air flow configuration. This dynamic feature allows the system to switch between a closed configuration (for optimized air flow) and an open configuration (for maintenance access), resolving the contradiction between cooling effectiveness and maintenance accessibility.

Inventive Principle:

Principle #15Dynamics

2Productivity

If a fan shroud is used to concentrate air flow to the first radiator, then air flow efficiency improves, but gaps between the shroud and radiator reduce effectiveness

Engineering Contradiction:

Improveair flow efficiencyVSAvoidair flow concentration effectiveness

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The fan shroud is segmented into a fixed front portion that concentrates air flow and a removable rear portion that can be positioned to eliminate gaps. This segmentation allows the system to maintain both air flow concentration and gap elimination simultaneously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The removable rear portion of the shroud acts as an intermediary element between the fan and the radiator. It fills the gap that exists in conventional designs, ensuring that air flow concentration is maintained while still allowing access for maintenance when removed.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If the whole bonnet is removed or lifted for maintenance of the area between fan shroud and radiator, then access is achieved, but the process becomes inconvenient and time-consuming

Engineering Contradiction:

Improvemaintenance accessibilityVSAvoidmaintenance time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The fan shroud is segmented into a fixed front portion and a removable rear portion. This segmentation allows maintenance personnel to access the area between the fan and radiator by removing only the rear portion, rather than removing the entire bonnet, significantly reducing maintenance time and effort.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The rear portion of the fan shroud is extracted as a separate removable component. This extraction allows direct access to the maintenance area without affecting the rest of the bonnet structure, making maintenance operations much more efficient and convenient.

Inventive Principle:

Principle #2Taking out (Extraction)

4Ease of operation

If a conventional fan shroud is used, then air flow direction is partially controlled, but the shroud must be removed for maintenance access

Engineering Contradiction:

Improvemaintenance accessVSAvoidshroud structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The fan shroud is divided into a fixed front portion and a removable rear portion. This segmentation provides a simple solution that maintains air flow control while enabling easy maintenance access, without requiring complex mechanisms or complete bonnet removal.

Inventive Principle:

Principle #1Segmentation

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

Improves air flow efficiency and accessibility by ensuring all air from the fan reaches the radiator, reducing the need for larger fans and simplifying maintenance by allowing access from either side of the bonnet.

Implementation Method 1

a fan positioned at the front of the vehicle drives air through the radiators

Methodology Applied

Scientific EffectPressure differential: Pressure Gradient

Implementation Method 2

radiators in order to cool working media, such as a water cooler for the engine

Methodology Applied

Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentEP3022416B1Fan shroud on an agricultural vehicle

Publication Date: 2021.03.31 AGCO INT GMBH

Figure 1
Figure 1a
Figure 1b

AI summary

An agricultural vehicle having a cooling system comprising a fan. The cooling system is housed in a bonnet of the vehicle. When the bonnet is closed it forms a part of a fan shroud of the fan and directs air in a direction parallel or substantially parallel to the longitudinal axis of the vehicle.