Tractor Exhaust Control Casing for Heat and Moisture Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tractors face challenges in effectively reducing a large amount of toxic materials in exhaust gas from the engine, particularly due to the susceptibility of control units to heat and moisture in the engine room, which can impair their functionality.
Innovation Solution
The tractor incorporates an exhaust gas cleaning device with a control unit housed in a unit casing protected from heat and moisture, utilizing a rotary fan for cooling and a hood holding frame member as a holder, along with a casing lid design that prevents dust and water ingress, ensuring the control unit can effectively manage the cleaning process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the control unit is disposed in the engine room to control the exhaust gas cleaning device, then the control functionality is improved, but the control unit is exposed to heat and moisture from the engine which can impair its operation
Solution Approach 1:
The control unit is separated from the engine by being housed in a dedicated unit casing, creating a distinct controlled environment that isolates the control unit from harmful heat and moisture while maintaining its control functionality
Solution Approach 2:
The unit casing acts as an intermediary barrier between the control unit and the engine environment, protecting the control unit from heat and moisture while allowing it to perform its control functions
2Reliability
If a dedicated holder for the unit casing is provided, then the control unit is securely mounted, but the device complexity and cost increase
Solution Approach 1:
The hood holding frame member is designed to serve dual purposes: both holding the engine hood and providing mounting support for the unit casing, thereby eliminating the need for a separate dedicated holder and reducing overall device complexity
Solution Approach 2:
The hood holding frame member is given multiple functions - it both supports the engine hood and serves as a mounting structure for the unit casing, making the design more efficient and cost-effective
3Object-affected harmful factors
If the casing lid is fixed and sealed, then the control unit is protected from dust and water, but maintenance access becomes difficult
Solution Approach 1:
The casing lid is designed to be movable rather than fixed, allowing it to be opened for maintenance access and closed for protection, providing dynamic adaptability between operational and maintenance states
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 ensures the control unit operates appropriately, effectively reducing toxic materials in exhaust gas by protecting it from engine heat and moisture, while also allowing for easy maintenance and reduced costs through shared components.
Implementation Method 1
a rotary fan disposed forward of the engine and configured to supply engine cooling air
Implementation Method 2
the unit casing helps prevent the control unit from being wetted or heated due to heat from the engine or in the engine room
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A tractor includes: an engine room (19) defined by an engine hood (20); an engine (5) in the engine room (19); an exhaust gas cleaning device (25) disposed in the engine room (19) and configured to clean exhaust gas from the engine (5); a control unit (31) disposed in the engine room (19) and configured for cleaning the exhaust gas; and a unit casing (32) containing the control unit (31).