Cab-Mounted Heat Exchanger Layout for Vehicle Cooling Airflow

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Solution Overview

Problem

Existing thermal management systems for vehicles often struggle with efficient cooling due to the placement and design of radiators, which can lead to reduced airflow and cooling performance.

Innovation Solution

The proposed solution involves a vehicle thermal management system where a heat exchanger is positioned within a defined air volume between a shroud and a cab, with a path for airflow through an inlet, the heat exchanger, and an outlet, enhancing airflow and cooling efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the heat exchanger is positioned within the air volume between the shroud and the cab, then the cooling performance is improved, but the device complexity increases

Engineering Contradiction:
Improvecooling performanceVSAvoiddevice complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The heat exchanger is nested within the air volume defined by the shroud and cab structure, utilizing the existing spatial configuration to achieve improved cooling without adding external components. This nesting approach resolves the contradiction by integrating the heat exchanger into the vehicle's existing architecture rather than adding separate external cooling systems.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The shroud structure serves multiple functions: it defines the air volume for the heat exchanger, directs airflow through the system, and integrates with the cab structure. This multi-functionality reduces the need for additional dedicated components, improving cooling performance while limiting the increase in device complexity.

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

2Temperature

If the heat exchanger extends above the cab, then the heat dissipation efficiency is improved, but the vehicle height increases

Engineering Contradiction:
Improveheat dissipation efficiencyVSAvoidvehicle height
Core Design Contradiction:
TemperatureVSLength of stationary object

Solution Approach 1:

The heat exchanger utilizes the vertical dimension by extending above the cab into the air volume defined by the shroud, allowing improved heat dissipation through increased exposure to airflow. This dimensional approach resolves the contradiction by efficiently using vertical space rather than requiring proportional increases in overall vehicle height.

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

Solution Approach 2:

The heat exchanger is positioned in the specific region above the cab where airflow is most effective for heat dissipation, concentrating the thermal management function in the optimal location rather than distributing it throughout the vehicle structure, thereby improving efficiency without uniformly increasing vehicle dimensions.

Inventive Principle:
Principle #3Local quality

3Speed

If a shroud is used to define an air volume, then the airflow control is improved, but the device complexity increases

Engineering Contradiction:
Improveairflow controlVSAvoiddevice complexity
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The shroud is designed to perform multiple functions simultaneously: it defines the air volume for the heat exchanger, directs and controls airflow through the system, and integrates with the existing cab and body structures. This multi-functionality improves airflow control while minimizing the increase in device complexity by utilizing existing structural elements.

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

Solution Approach 2:

The shroud is merged with the cab and body structures to form an integrated assembly, combining the airflow control function with the existing vehicle structure. This merging approach resolves the contradiction by achieving improved airflow control through integration rather than adding separate, complex airflow management systems.

Inventive Principle:
Principle #5Merging (Combining)

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 improves airflow and cooling performance by ensuring that the heat exchanger is optimally positioned to receive airflow, leading to more effective heat dissipation and improved vehicle performance.

Implementation Method 1

a heat exchanger coupled to the cab and positioned at least partially within the cowl such that the heat exchanger extends above the cab

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 2

a path for airflow is defined through the inlet, the heat exchanger, and the outlet

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentUS12344124B2Vehicle with thermal management system
Publication Date: 2025.07.01 OSHKOSH CORPORATION
  • US12344124B2 patent drawing
  • US12344124B2 patent drawing
  • US12344124B2 patent drawing

AI summary

A vehicle includes a chassis, a cab coupled to the chassis, a body coupled to the chassis, a cowl coupled to at least one of the body or the cab and extending above the cab, and a heat exchanger coupled to the cab and positioned at least partially within the cowl such that the heat exchanger extends above the cab.