Work Vehicle Reducing Agent Tank Thermal Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing arrangement of reducing agent tanks in work vehicles is prone to excessive temperature increases, which can lead to freezing issues in low temperatures and inefficient processing due to the proximity to engine heat sources, and the length of reducing agent hoses can exacerbate temperature fluctuations.
Innovation Solution
A work vehicle design featuring a reducing agent tank positioned behind a partition wall, with a reducing agent hose having a boundary portion between the engine and radiator compartments, and a cover member to protect the hose and pump from excessive temperature variations, including a through hole in the partition wall to shorten hose length and a radiator placement below the hose to minimize cooling air influence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the reducing agent tank is arranged inside the counterweight near the engine to suppress freezing using engine heat, then the reducing agent temperature is maintained above freezing point, but the temperature of the reducing agent becomes excessively increased over time
Solution Approach 1:
The patent divides the vehicle body into two separate accommodation spaces using a partition wall: the first accommodation space for the engine and exhaust processing apparatus, and the second accommodation space for the radiator and reducing agent tank. This segmentation isolates the reducing agent from direct engine heat while maintaining separate thermal zones, resolving the contradiction between preventing freezing and avoiding excessive temperature increase.
Solution Approach 2:
The partition wall acts as a thermal intermediary between the engine compartment and the reducing agent tank. It allows the reducing agent tank to be positioned behind the partition wall where it is shielded from direct engine heat, while still being part of the overall vehicle thermal management system. The radiator positioned in the second accommodation space further mediates thermal conditions.
2Temperature
If the reducing agent tank is arranged separated from the selective catalytic reduction apparatus, then the reducing agent is protected from excessive heat, but the reducing agent hose becomes long and is easily influenced by surrounding temperature
Solution Approach 1:
The patent utilizes the spatial dimension created by the partition wall and vertical positioning to solve the hose length problem. The boundary portion of the reducing agent hose is positioned at the boundary between the first and second accommodation spaces, with its height between the top and bottom sections of the connecting pipe. This three-dimensional positioning allows the hose to be relatively short while still connecting the separated tank to the exhaust processing apparatus, minimizing temperature influence on the hose.
3Object-affected harmful factors
If the boundary portion of the reducing agent hose is positioned at the boundary between accommodation spaces, then the hose length is minimized and temperature influence is reduced, but the arrangement complexity increases
Solution Approach 1:
The partition wall serves multiple functions: it separates the engine and radiator into different accommodation spaces, provides structural support, and acts as a reference for positioning the reducing agent hose boundary portion. The boundary portion positioning at the partition wall boundary utilizes this existing structural element, avoiding additional complex positioning mechanisms while achieving the dual goals of minimizing hose length and reducing temperature influence.
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 effectively suppresses excessive temperature increases in the reducing agent tank and hose, maintaining optimal conditions for the reducing agent, preventing freezing and ensuring efficient processing while minimizing temperature fluctuations.
Implementation Method 1
The radiator is arranged behind the engine, the selective catalytic reduction apparatus, and the connecting pipe
Implementation Method 2
The partition wall partitions a first accommodation space and a second accommodation space. The engine, the selective catalytic reduction apparatus, and the connecting pipe are arranged in the first accommodation space. The radiator is arranged in the second accommodation space.
Implementation Method 3
The reducing agent hose has a boundary portion which is positioned at a boundary between the first accommodation space and the second accommodation space. The position of the height of the boundary portion is positioned between a top section and a bottom section of the connecting pipe in the up and down direction.
Data Source
AI summary
A radiator is arranged behind an engine, a selective catalytic reduction apparatus, and a connecting pipe. A partition wall partitions first and second accommodation spaces. The engine, the selective catalytic reduction apparatus, and the connecting pipe are arranged in the first space. The radiator is arranged in the second space. A reducing agent tank is arranged behind the partition wall. A reducing ejection apparatus attached to the pipe ejects reducing agent into the pipe. A reducing agent hose connects the tank and the apparatus. The hose has a boundary portion positioned at a boundary between the first and second spaces. A height position of the boundary portion is between top and bottom sections of the connecting pipe. The boundary portion and the reducing agent ejection apparatus are arranged on a left or right side of a center line extending in a front and back direction of the partition wall.