DOC Mounting Assembly With Lateral Plate Movement
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Solution Overview
Problem
Conventional mounting assemblies for diesel oxidation catalyst (DOC) systems in work vehicles are complex and time-consuming to assemble, making it difficult to mount the large DOC housing under the hood adjacent to the engine due to limited space.
Innovation Solution
A mounting assembly comprising a support bracket, a mount plate, and a retention band that allows for easy installation of the DOC system under the hood, featuring a support bracket with fastener openings, a mount plate with elongated slots for lateral movement, and a retention band that can be tightened and loosened around the DOC housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional mounting assemblies are used for DOC systems, then the DOC housing can be mounted under the hood, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The mounting assembly is divided into separate components: a bracket that mounts to the vehicle, a DOC housing, and a retention band. This segmentation allows each component to be independently manufactured and assembled in a simple sequence, reducing overall assembly complexity while maintaining ease of installation.
Solution Approach 2:
The retention band provides a dynamic mounting solution that can be easily tightened or loosened around the DOC housing. This dynamic feature allows for quick installation and removal without complex fastening mechanisms, directly addressing the ease of operation requirement.
2Reliability
If the DOC housing is made large to contain catalysts and mixing chamber, then it can perform exhaust treatment functions, but it becomes difficult to mount within limited under-hood space
Solution Approach 1:
The DOC housing is designed with a nested structure where the mixing chamber and catalyst components are integrated within the housing volume. This nesting allows the housing to contain all necessary exhaust treatment functions while maintaining a compact external dimensions suitable for under-hood mounting.
Solution Approach 2:
The mounting bracket extends in multiple dimensions to provide secure attachment points around the DOC housing. By utilizing three-dimensional mounting surfaces and fastener openings distributed across different planes, the assembly accommodates the large housing volume while fitting within the constrained under-hood spatial envelope.
3Reliability
If mounting components are sub-assembled onto the DOC housing before installation, then the DOC system can be secured, but assembly time at the manufacturing plant increases significantly
Solution Approach 1:
The bracket is pre-mounted to the vehicle chassis with mounting surfaces and fastener openings prepared in advance. This preliminary action allows the DOC housing to be directly attached without requiring complex sub-assembly operations at the manufacturing plant, significantly reducing assembly time while maintaining secure mounting.
Solution Approach 2:
The retention band is designed to self-adjust and self-secure around the DOC housing through its elastic or tension-based mechanism. This self-service feature eliminates the need for complex fastening operations or specialized assembly tools, allowing workers to quickly install the system without time-consuming sub-assembly steps.
Data Source
AI summary
A mounting assembly for mounting a diesel oxidation catalyst (DOC) system within a work vehicle may generally include a support bracket having a first side and a second side. The mounting assembly may also include a mount plate configured to be coupled to the first side of the bracket. The mount plate may include first and second plate walls and may define an elongated slot through the first plate wall. Additionally, the assembly may include a retention band configured to at least partially wrap around a housing of the DOC system between a first end configured to be coupled to the mount plate and a second end configured to be coupled to the second side of the support bracket. The mount plate may be configured to be moved laterally relative to the support bracket to allow the retention band to be tightened and loosened around the housing.