Nested Reducing Agent Tank for Exhaust Gas Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motor vehicles with internal combustion engines and exhaust gas cleaning systems face issues with the storage of reducing agents, such as mixing of operating materials due to leaks and inadequate thermal insulation, which can be exacerbated by the combination of fuel and reducing agent storage in a single tank.
Innovation Solution
A separate inner tank for the reducing agent is housed within a second tank section, forming a structural unit that allows for positive locking and additional fastening means, providing thermal insulation and space-saving design, with optional heating and sensor systems, and various connection methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a combined tank structure is used for fuel and reducing agent storage, then structural integration is improved, but material mixing due to leaks occurs
Solution Approach 1:
The tank system is segmented into an outer tank and an inner tank, where the outer tank stores fuel and the inner tank stores reducing agent. This segmentation allows both materials to be stored in a combined structure while maintaining physical separation, thus achieving both structural integration and material separation reliability.
Solution Approach 2:
The inner tank containing reducing agent is nested within the outer tank containing fuel. This nesting configuration enables the combined tank structure to maintain compact integration while ensuring that the two different operating materials remain separated in their respective containers, preventing mixing due to leaks.
2Reliability
If a separate inner tank is used for reducing agent storage, then material mixing is prevented, but device complexity increases
Solution Approach 1:
The inner tank and outer tank are merged into a single integrated assembly where the inner tank is positioned within the outer tank. This merging approach maintains reliable material separation while avoiding the need for completely separate tank systems, thus reducing overall device complexity compared to using entirely separate external tanks.
3Volume of moving object
If a combined tank structure is used, then space efficiency is improved, but thermal insulation of reducing agent is insufficient
Solution Approach 1:
An intermediate space or insulating layer is introduced between the inner tank and outer tank. This intermediary element provides thermal insulation for the reducing agent in the inner tank while maintaining the compact combined structure, thus achieving both space efficiency and adequate thermal protection.
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 prevents material mixing, enhances thermal insulation, and allows for a space-efficient and visually appealing design, reducing the need for additional structural units and improving the operational efficiency of the exhaust gas cleaning system.
Implementation Method 1
the separate inner tank is fastened in the open tank section by positive locking, the separate inner tank being fixed and fastened by means of suspensions provided in the second tank section
Implementation Method 2
the separate inner tank can be thermally insulated from its surroundings by an intermediate space formed between the inner tank and the second tank section
Implementation Method 3
a heater for the purpose of heating the reducing agent located therein can be provided either in a separate inner tank or in the space between the separate inner tank and the second tank section
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The vehicle has an exhaust gas purification device for purifying the exhaust gas of an internal combustion engine, where a closed tank section (3) is provided as a fuel chamber. Another tank section (9) which is open at one side, is attached at a front side end of the tank section (3). The tank section (9) is provided as a housing for accommodating a separate interior tank. The separate interior tank forms the reducing agent chamber.