Fluid Delivery System Heating Blanket Retention Plate
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Solution Overview
Problem
Existing fluid delivery systems for exhaust aftertreatment systems face challenges in low-temperature performance, durability, compactness, and structural stability, which affect their efficiency in reducing emissions of particulate matter and NOX.
Innovation Solution
A fluid delivery system comprising an outer housing, a pump, a filter assembly, an electric heating blanket, and a heater retention plate, where the heating blanket is positioned between the lid and the pump and filter assembly, and the heater retention plate is designed to securely hold the heating blanket in contact with the pump and filter assembly, enhancing heat transfer and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heating blanket is added to improve low-temperature performance, then the system's low-temperature performance is improved, but the device complexity increases
Solution Approach 1:
The heating blanket is integrated directly into the housing structure, merging the heating function with the structural component rather than adding it as a separate external system. This reduces overall device complexity while maintaining the low-temperature performance improvement.
Solution Approach 2:
A retention plate is introduced as an intermediary component to secure the heating blanket to the housing. This simple mediator element facilitates the integration of the heating function without requiring complex mounting mechanisms, thus improving low-temperature performance with minimal increase in device complexity.
2Temperature
If the heating blanket is securely retained to enhance heat transfer, then heat transfer efficiency is improved, but the device complexity increases
Solution Approach 1:
The retention plate serves as an intermediary component that simplifies the secure attachment of the heating blanket. By providing a dedicated mounting surface with retention features, it ensures efficient thermal contact between the heating blanket and the pump/filter assembly without requiring complex fastening systems or multiple attachment points.
3Volume of moving object
If the system components are integrated in a compact arrangement, then the system compactness is improved, but the structural stability deteriorates
Solution Approach 1:
The housing is divided into distinct functional zones (heating zone with blanket, filtration zone with filter assembly, pumping zone with pump) that are compactly arranged. The retention plate creates a stable structural platform within this segmented layout, ensuring that each component maintains proper positioning and structural support despite the compact integration.
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 system achieves improved low-temperature performance, durability, and compactness, ensuring effective fluid delivery and emission reduction while maintaining structural stability and efficient heat transfer.
Implementation Method 1
an electric heating blanket, and a heater retention plate... The heating blanket may be disposed within the outer housing and may cover at least a portion of the pump and at least a portion of the filter assembly
Data Source
AI summary
A fluid delivery system for an exhaust aftertreatment system may include an outer housing, a pump, a filter assembly, an electric heating blanket, and a heater retention plate. The heater retention plate is shaped to correspond to the shapes of the pump and filter assembly. A lid of the outer housing contacts the heater retention plate and clamps the heating blanket between the heater retention plate and the pump and filter assembly so that the heating blanket takes the shapes of portions of the pump and filter assembly. The outer housing includes mounting flanges and reinforcement members extending from corresponding mounting flanges to corresponding sidewalls of the outer housing and forming a hollow space therebetween. The filter assembly includes compensation elements that contract in response to expansion of fluid within a pump housing due to freezing and expand in response to thawing of the fluid.