Exhaust Aftertreatment Brick Module Coupling Mechanism
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Solution Overview
Problem
Existing engine exhaust aftertreatment components face challenges in serviceability, as filters and other components require periodic cleaning and replacement, but existing solutions do not adequately secure these components from movement during assembly, potentially leading to damage and inefficiencies in maintenance.
Innovation Solution
The engine exhaust aftertreatment component incorporates an aftertreatment brick module with a catalytic brick and end plates featuring coupling mechanisms that slide into internal support channels within the housing, allowing for easy installation and removal while preventing substantial movement during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional fastening methods are used to secure aftertreatment components, then component stability is improved, but device complexity and ease of repair deteriorate due to numerous fasteners requiring removal
Solution Approach 1:
The aftertreatment system is divided into modular brick modules that can be independently removed and replaced. Each module is secured through a simplified coupling mechanism with guide pins and retaining features, allowing segmentation of the system for easier maintenance without requiring removal of multiple fasteners across the entire assembly.
Solution Approach 2:
The complex fastening system is extracted and replaced with a simplified coupling mechanism. The guide pins and retaining features are extracted from the traditional multi-fastener approach, providing a cleaner extraction of the securing function that allows easy module removal while maintaining stability during operation.
2Stability of the object's composition
If traditional fastening methods are used to secure aftertreatment components, then component stability is improved, but device complexity worsens due to numerous fasteners
Solution Approach 1:
Multiple fastening functions are merged into a single integrated coupling mechanism. The guide pins, retaining features, and alignment elements are combined into one unified system that secures the module without requiring separate fasteners for each function, thereby reducing device complexity while maintaining stability.
Solution Approach 2:
The coupling mechanism is designed with multi-functionality, serving as both an alignment guide, a retaining mechanism, and a structural connector. This universal design eliminates the need for multiple specialized fasteners, reducing overall device complexity while ensuring component stability during operation.
3Ease of repair
If aftertreatment brick modules are made easily removable, then ease of repair is improved, but reliability worsens due to potential movement during assembly
Solution Approach 1:
The coupling mechanism is designed with dynamic retention features that prevent module movement during operation while allowing controlled removal during maintenance. The retaining features engage positively with the housing to prevent movement, yet can be deliberately disengaged by removing the guide pins for easy module removal during repair.
Solution Approach 2:
The guide pins and retaining features act as intermediary elements between the module and housing. These intermediaries provide a reliable connection that prevents movement during operation, while also facilitating easy removal during maintenance by allowing the guide pins to be removed and the module to be extracted without damage.
Data Source
AI summary
An engine exhaust aftertreatment component includes a housing defining an exhaust flow path from an exhaust inlet to an exhaust outlet. The housing supports an internal support channel. An aftertreatment brick module includes a catalytic brick, a can configured to receive the catalytic brick, and an end plate disposed along an end of the can. The end plate includes a coupling mechanism configured to be received within the internal support channel.