Sensor Mounting Bracket Thermal Isolation
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Solution Overview
Problem
The high temperature environment in exhaust aftertreatment systems, particularly in stationary applications with insufficient airflow, poses challenges for locating sensors and electronics required for emissions compliance, as they are prone to overheating and premature failure.
Innovation Solution
The arrangement includes standoff members and enclosures to thermally isolate electrical components within the aftertreatment module, using thermally insulating materials and reflective enclosures to reduce heat conduction and radiation, while maintaining positional rigidity and creating air gaps for heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If electrical components are mounted directly to the aftertreatment module, then device complexity is reduced, but temperature increases causing premature failure
Solution Approach 1:
The patent introduces a mounting bracket as an intermediary component between the aftertreatment module and electrical components. This bracket is thermally isolated from the module using heat sink material, creating a thermal buffer that protects sensors and electronics from high temperatures while maintaining mechanical mounting functionality.
Solution Approach 2:
The patent extracts electrical components from direct thermal contact with the aftertreatment module by mounting them on a separate bracket structure. This separation removes the harmful thermal influence from the components while preserving the necessary mounting and positioning functions.
2Temperature
If airflow is increased to cool the system, then temperature is reduced, but in stationary applications airflow is insufficient
Solution Approach 1:
The patent converts the harmful direct thermal radiation from the aftertreatment module into a beneficial cooling mechanism by using heat sink material on the mounting bracket. This material absorbs and dissipates heat, transforming the thermal challenge into a controlled heat management solution that works passively without requiring additional airflow.
3Volume of moving object
If sensors are located close to the aftertreatment module, then space is saved, but reliability decreases due to overheating
Solution Approach 1:
The mounting bracket serves as a thermal intermediary that allows sensors to be positioned close to the aftertreatment module for space efficiency while simultaneously protecting them from harmful temperatures. The heat sink material on the bracket creates a thermal barrier that maintains sensor reliability.
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 solution effectively maintains sensor component temperatures below failure thresholds, preventing premature failure and ensuring reliable emissions monitoring and control in high-temperature environments.
Implementation Method 1
a mounting bracket thermally isolated from the aftertreatment module by heat sink material
Implementation Method 2
an air gap between the bracket and the aftertreatment module
Implementation Method 3
The enclosure may be reflective to reduce the amount of thermal energy absorbed by the sensor or associated electronics
Data Source
AI summary
An arrangement for mounting at least one electrical component to a portion of an aftertreatment module, the arrangement including; at least one standoff member coupled between the electrical component and the portion of the aftertreatment module, and an enclosure substantially surrounding at least three sides of the electrical component.