Emissions Control Device Threaded Disassembly Mechanism
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Solution Overview
Problem
The existing emissions control devices for combustion engines require specialized tools for assembly and disassembly, making the process time-consuming and costly, and do not allow for easy inspection or replacement of the emissions control substrates within the aftertreatment arrangement.
Innovation Solution
The emissions control device features a housing with threaded openings for assembly and disassembly, utilizing radial directed forces from a sealing element to facilitate tool-free assembly and disassembly, enabling easy inspection and replacement of the emissions control substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional emissions control devices are used, then the sealing function is reliable, but specialized tools are required for assembly and disassembly, making the process time-consuming and costly
Solution Approach 1:
The emissions control device is divided into separable components: a housing containing the substrate and a separate closure member. This segmentation allows the closure member to be independently removed using simple tools, eliminating the need for specialized assembly/disassembly tools and reducing service time while maintaining sealing integrity through the separate sealing element interface.
2Ease of repair
If the emissions control substrate is permanently fixed, then the device structure is simple, but the substrate cannot be easily inspected or replaced when saturated
Solution Approach 1:
The device is segmented into a housing, substrate, and closure member that can be independently removed. This allows the substrate to be accessed and replaced by simply removing the closure member with basic tools, greatly simplifying maintenance while the modular structure keeps overall device complexity manageable.
Solution Approach 2:
The closure member is designed to be dynamically removable and reattachable, transforming the substrate from a permanently fixed state to an accessible, replaceable state. This dynamic design enables easy substrate replacement when saturated, while the simple closure mechanism maintains acceptable device structure complexity.
3Reliability
If a sealing element is used to ensure proper sealing, then the sealing function is reliable, but the sealing element cannot be inspected when the device is assembled
Solution Approach 1:
The sealing element is integrated with the removable closure member rather than being permanently fixed to the housing. This segmentation allows the entire closure member with its sealing element to be independently removed and inspected using basic tools, enabling sealing element inspection while maintaining reliable sealing function during operation.
4Ease of manufacture
If specialized adapted tools are used for assembly and disassembly, then the assembly process is precise, but the tools are costly and require significant time to locate and use
Solution Approach 1:
The closure member is designed with a standardized interface that can be removed using common, universal tools rather than requiring specialized adapted tools. This universal design simplifies the assembly process by allowing use of readily available tools, reduces device complexity by eliminating specialized tool requirements, and maintains assembly precision through the designed interface geometry.
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 eliminates the need for specialized tools, simplifies the service process, and reduces time and costs associated with maintaining the emissions control device, allowing for efficient cleaning and replacement of the substrate.
Implementation Method 1
the at least one sealing element is configured to be compressed in a radial direction when assembling the emissions control device in the aftertreatment arrangement
Data Source
Figure 1~2
Figure 3a~3b
Figure 4
AI summary
The invention relates to an emissions control device (4) for a combustion engine aftertreatment arrangement (2), the emissions control device (4) comprising: a housing (22) configured for accommodating an emissions control substrate (48); and at least one first opening (24) in the housing (22), which at least one first opening (24) is con- figured for receiving a threaded assembling element (26), which threaded assembling element (26) is configured for assembly of the emissions control device (4) in a cavity (20) of the aftertreatment arrangement (2). The emissions control device (4) further comprises at least one second opening (30) in the housing (22), wherein the at least one second opening (30) is provided with a thread (32), configured for receiving a threaded disassembling element (62), which threaded disassembling element (62) is configured for disassembly of the emissions control device (4) from the cavity (20) of the aftertreatment arrangement (2). The invention further relates to a combustion en- gine aftertreatment arrangement (2). The invention further relates to a vehicle (1). The invention further relates to a method for disassembling an emissions control de- vice (4) according to the appended claims.