Urea Injection Intermediate Element for Flexible SCR Mounting
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Solution Overview
Problem
Existing SCR systems for nitrogen oxide reduction in heavy motor vehicles lack flexibility in installation space and arrangement of the tank and delivery module, limiting their adaptability and efficiency.
Innovation Solution
An intermediate element with a suction and return line connection allows for flexible positioning of the delivery module and tank, enabling hydraulic connection and reducing the need for structural changes, along with an optional electric heater to prevent freezing of the urea water solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the delivery module is screwed directly to the tank to form a compact unit, then the structural integrity and simplicity are improved, but the flexibility in installation space and arrangement is reduced
Solution Approach 1:
The system is divided into separate modules (tank, delivery module, intermediate element) that can be independently positioned and connected. The intermediate element acts as a detachable connector with adapter plates that enable flexible arrangement while maintaining hydraulic connection, resolving the contradiction between structural simplicity and installation flexibility.
Solution Approach 2:
An intermediate element is introduced between the tank and delivery module to provide flexible connection. This intermediate element includes adapter plates and hydraulic lines that enable variable positioning while maintaining system integrity, allowing the delivery module and tank to be arranged at different points in the vehicle without requiring direct attachment.
2Duration of action of moving object
If the tank volume is increased to extend refill intervals, then the operational duration is improved, but the installation space requirements increase
Solution Approach 1:
The intermediate element enables three-dimensional flexible arrangement of the tank and delivery module within the vehicle's available space. By utilizing vertical and lateral positioning options through adjustable adapter plates and routing lines, the system can accommodate larger tank volumes in previously unavailable spatial configurations, thereby extending refill intervals without proportionally increasing footprint.
3Adaptability or versatility
If the delivery module and tank are connected at different points in the vehicle, then the installation flexibility is improved, but the hydraulic connection complexity increases
Solution Approach 1:
The intermediate element is designed with universal adapter plates that can be mounted on various surfaces and orientations. The suction line and return line are configured to accommodate different routing paths, enabling the same intermediate element to connect tank and delivery module at multiple different locations throughout the vehicle without requiring custom-designed connection assemblies for each configuration.
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 enhances flexibility in installation and extends the interval between urea water solution refills, reduces the risk of freezing, and minimizes costs by allowing air filling of lines, thereby improving system reliability and efficiency.
Implementation Method 1
the intermediate element has at least one electric heater, with a heater being provided in a particularly preferred embodiment in the region of the first adapter plate and the second fastening plate
Data Source
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AI summary
An injection apparatus for urea aqueous solutions is disclosed, having a conveyor module and a container, wherein an intermediate element (7) is provided which allows for either connecting the conveyor module (3) and the container (1) directly to each other or arranging said conveyor module and container on a motor vehicle in a spatially separated manner without design alterations.