Reducing Agent Tank Strainer Bubble Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing reducing agent tanks in work vehicles suffer from suction defects due to bubbles remaining in the strainer during the purge process, leading to operational issues with the reducing agent pump, and reducing the filter surface area affects the flow rate of the reducing agent.
Innovation Solution
A reducing agent tank design with a strainer that includes a surrounding portion and a facing portion, where the facing portion extends into the internal space to reduce the gap volume, minimizing bubble retention and maintaining a large filter surface area, ensuring smooth flow and reducing suction defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the volume of the internal space of the strainer is reduced to minimize bubble retention, then the amount of bubbles remaining during purge process is reduced, but the surface area of the filter portion is reduced, affecting the flow rate of the reducing agent
Solution Approach 1:
The strainer is divided into two functional parts: a surrounding portion with a large filter surface area for maintaining flow rate, and a facing portion that extends into the internal space to reduce gap volume and minimize bubble retention. This segmentation allows each part to optimize its specific function without compromising the other.
Solution Approach 2:
The facing portion extends axially into the internal space of the strainer, utilizing the third dimension (depth) to reduce the gap volume between the facing portion and the surrounding portion. This dimensional approach allows bubble volume reduction without sacrificing the radial filter surface area.
2Productivity
If a large surface area of the filter portion is secured to maintain flow rate, then the flow rate of the reducing agent is maintained, but the volume of the internal space of the strainer is large, causing many bubbles to remain
Solution Approach 1:
The strainer is divided into two functional parts: a surrounding portion with a large filter surface area for maintaining flow rate, and a facing portion that extends into the internal space to reduce gap volume and minimize bubble retention. This segmentation allows each part to optimize its specific function without compromising the other.
Solution Approach 2:
The facing portion extends axially into the internal space of the strainer, utilizing the third dimension (depth) to reduce the gap volume between the facing portion and the surrounding portion. This dimensional approach allows bubble volume reduction without sacrificing the radial filter surface area.
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
The design effectively suppresses suction defects and maintains a high flow rate of the reducing agent, ensuring proper operation of the reducing agent pump and exhaust gas treatment devices.
Implementation Method 1
The first filter portion allows the reducing agent to pass through between the internal space and the external space
Implementation Method 2
the facing portion extends into the internal space of the surrounding portion. Accordingly, a volume of the gap space sandwiched between the facing portion and the surrounding portion can be reduced
Data Source
AI summary
A container main body of a reducing agent tank stores a reducing agent. A suction pipe has a suction port positioned in the container main body, and guides the reducing agent from the suction port to outside of the container main body. The strainer is provided at the suction port of the suction pipe. The strainer includes a surrounding portion and a facing portion. The surrounding portion has a filter portion which surrounds an internal space to partition the internal space and an external space of the strainer and allows the reducing agent to pass through between the internal space and the external space. The facing portion extends into the internal space of the surrounding portion to face with the filter portion through a gap space communicating with the suction port in the internal space and partition the gap space and the external space.