Dump Truck Radiator Layout for Bidirectional Cooling

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Solution Overview

Problem

Existing dump truck designs face challenges in radiator layout, particularly in off-road trucks, where the large space required for cooling systems affects engine performance, and existing solutions do not adequately address the need for efficient cooling performance when traveling in both directions without defining forward or backward travel.

Innovation Solution

The dump truck features a pair of radiators disposed on both sides of the vehicle body frame, with each radiator exchanging heat between cooling air and cooling water, allowing for effective cooling and weight balance, and the radiators are positioned between tires to optimize space and cooling performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If both radiators are disposed at a single position in a layered manner, then the installation space is saved, but the cooling performance deteriorates due to insufficient fresh air supply

Engineering Contradiction:
Improveinstallation spaceVSAvoidcooling performance
Core Design Contradiction:
Volume of moving objectVSTemperature

Solution Approach 1:

The radiator system is segmented into two separate radiators disposed on opposite sides of the vehicle body frame rather than stacked at a single position. This segmentation allows each radiator to independently access fresh cooling air from its respective side, resolving the contradiction between space utilization and cooling effectiveness.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The radiators are distributed across the vehicle width dimension rather than being concentrated in the vertical dimension. By placing one radiator on each side of the vehicle body frame in the vehicle width direction, the system expands the cooling architecture horizontally, ensuring adequate air supply to both radiators while maintaining compact overall dimensions.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Volume of moving object

If the radiators are disposed at an end of the dump truck in the travel direction, then the space utilization is improved, but the equivalent cooling performance in both travel directions deteriorates

Engineering Contradiction:
Improvespace utilizationVSAvoidcooling performance in bidirectional travel
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The radiator configuration creates a symmetric layout with respect to the vehicle's longitudinal centerline, with one radiator on each side. This symmetric asymmetric placement (symmetric in terms of distribution pattern) ensures that regardless of which end of the vehicle is leading during travel, both radiators remain positioned to receive adequate cooling air flow.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The radiator arrangement provides universal cooling performance for bidirectional travel. By positioning radiators on both sides of the vehicle body frame rather than at one end, the system ensures that cooling functionality is maintained equally well whether the vehicle travels forward or backward, making the cooling system adaptable to either direction of travel.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Weight of moving object

If the radiators are disposed to achieve favorable weight balance in the middle of the vehicle body frame, then the travel performance is improved, but the cooling air supply may be insufficient

Engineering Contradiction:
Improveweight balanceVSAvoidcooling air supply
Core Design Contradiction:
Weight of moving objectVSTemperature

Solution Approach 1:

The radiator positions are optimized for local cooling effectiveness rather than uniform distribution. By placing radiators on the outside of the vehicle body frame in the vehicle width direction, each radiator is positioned in a location that maximizes its access to fresh cooling air from the vehicle's exterior, ensuring adequate cooling air supply while maintaining central positioning for weight balance.

Inventive Principle:
Principle #3Local quality

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 arrangement improves cooling performance, maintains weight balance, and allows the dump truck to travel efficiently in both directions without the need for a defined forward or backward orientation, enhancing overall travel performance.

Implementation Method 1

a first radiator configured to exchange heat between the cooling air and cooling water after cooling the engine, and a second radiator configured to exchange heat between the cooling air and the cooling water after cooling the aftercooler

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentUS9783041B2Dump truck radiator
Publication Date: 2017.10.10 KOMATSU LTD
  • US9783041B2 patent drawing
  • US9783041B2 patent drawing
  • US9783041B2 patent drawing

AI summary

A dump truck includes: a vehicle body frame extending in a travel direction; cooled objects in a form of an engine and an aftercooler; a first radiator and a second radiator configured to exchange heat between a cooling air and a cooling water after cooling the engine and the aftercooler, in which the first radiator is disposed to an outside of a first of the vehicle body frame in a vehicle width direction and the second radiator is disposed to an outside of a second side of the vehicle body frame in the vehicle width direction.