Tractor Hood Heat Shield Plate Design
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Solution Overview
Problem
In working vehicles like tractors with diesel engines and exhaust gas treatment devices, the limited installation space poses challenges for accommodating various components while managing heat generated by the engine and exhaust gas treatment devices, affecting both performance and operator comfort.
Innovation Solution
A tractor design featuring a hood that encloses the engine and post-processing device, with a heat shield plate positioned between the hood and the post-processing device, creating a space for insulation and preventing heat from affecting the engine room and driver's seat, thus maintaining a comfortable operating environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the post-processing device is mounted on the upper side of the engine to save space, then the installation space utilization is improved, but the heat generated by the post-processing device affects the engine room temperature and operator comfort
Solution Approach 1:
A heat shield plate is introduced as an intermediary component between the post-processing device and the engine room. This heat shield plate reflects and blocks thermal radiation from the post-processing device, preventing heat from transferring to the engine room and operator cab, thus resolving the thermal conflict while maintaining the space-efficient upper mounting configuration
Solution Approach 2:
The engine room is segmented into distinct thermal zones using the heat shield plate. The shield creates a thermal boundary that separates the high-temperature zone (around the post-processing device) from the lower-temperature engine room and operator cab areas, allowing each zone to maintain its required temperature independently
2Quantity of substance
If the fuel tank capacity is increased to meet fuel storage requirements, then the fuel storage capacity is improved, but the fuel tank shape may hinder the operator entering and exiting the tractor
Solution Approach 1:
The fuel tank design transitions from a conventional ground-level placement to a three-dimensional configuration that utilizes vertical space within the engine room. By positioning the fuel tank in the engine room and utilizing height direction space, the design achieves increased fuel capacity without expanding the horizontal footprint that would interfere with operator access
3Device complexity
If various parts are packed in a limited installation space to meet compact design requirements, then the device compactness is improved, but the heat management becomes more difficult and affects component performance
Solution Approach 1:
The heat shield plate serves as a thermal intermediary that blocks heat transfer between closely packed components. This allows the maintenance of compact device layout while preventing harmful thermal accumulation in the engine room, resolving the conflict between compactness and heat management
Solution Approach 2:
The heat shield plate is strategically positioned to provide localized thermal protection to specific areas of the engine room. This targeted approach allows heat management in critical zones while maintaining overall device compactness and not requiring extensive modifications to the entire system layout
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 design enhances heat balance, prevents heat accumulation, and maintains the post-processing device's efficiency while ensuring the driver's comfort by shielding the engine room from heat, allowing for effective operation in high-temperature environments.
Implementation Method 1
A heat shield plate is disposed between the hood and the post-processing device... preventing heat from negatively affecting the outside of the engine room
Implementation Method 2
a space serving as a heat insulation layer can be formed between the heat shield plate and the hood
Data Source
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AI summary
An object is to provide a working vehicle in which a hood has a structure of preventing heating by heat discharged from an engine room. A working vehicle according to the present invention includes: an engine 5 mounted in a front portion of a travelling vehicle 2; a post-processing device 224 that is disposed above the engine 5 and purifies exhaust gas from the engine 5. The engine 5 and the post-processing device 224 are covered with a hood 6. An upper surface side of the hood 6 is inclined to extend diagonally upward from a front side to a rear side. The post-processing device 224 is mounted on an upper side of the engine 5, and is positioned on a rear and inner side of the inclined upper surface side of the hood 6.