Fuel Tank Baffle Plate Bracket Mounting Structure
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Solution Overview
Problem
Conventional fuel tank assemblies with baffle plates are limited in effectively reducing noise caused by fuel surge, requiring costly and time-consuming modifications to shape, size, or mounting position, and often unsuccessful when modifying the interior shape of the fuel tank instead.
Innovation Solution
A fuel tank assembly with a baffle plate having a rounded connecting part, a fuel pump mounting space, and a bracket that maintains a predetermined distance between the baffle plate and the fuel tank, incorporating a partition and pressure controlling holes to suppress fuel surge and reduce manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the baffle plate is mounted close to the fuel tank wall to save space, then the fuel surge suppression effect is improved, but the manufacturing precision and assembly difficulty increase due to the need for precise distance control
Solution Approach 1:
The patent introduces a bracket as an intermediary component between the fuel tank and the baffle plate. The bracket includes a mounting plate fixed to the fuel tank and an extending arm that positions the baffle plate at a predetermined distance. This mediator structure eliminates the need for direct precision mounting of the baffle plate to the fuel tank wall, while maintaining the optimal distance for fuel surge suppression.
Solution Approach 2:
The mounting structure is segmented into multiple components: the bracket mounting plate, the extending arm, and the baffle plate assembly. This segmentation allows each component to be manufactured and assembled separately, reducing the overall manufacturing precision requirements compared to a monolithic mounting structure.
2Object-affected harmful factors
If the baffle plate is made larger to improve fuel surge suppression, then the noise reduction effect is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
Instead of increasing the baffle plate size in two dimensions (area), the patent extends the bracket's arm in the third dimension (length) to achieve the desired distance. This allows effective fuel surge suppression with a moderately sized baffle plate by utilizing the spatial dimension along the bracket arm.
Solution Approach 2:
The bracket serves as a mediator that provides the necessary spacing and structural support, allowing the baffle plate to maintain an optimal size without needing to be excessively large. The bracket arm length can be adjusted to achieve the desired positioning effect.
3Manufacturing precision
If multiple separate components are used for mounting the baffle plate to achieve precise positioning, then the positioning accuracy is improved, but the number of parts and manufacturing cost increase
Solution Approach 1:
The bracket is designed as an integrated structure combining the mounting plate and extending arm into a single component. This merging reduces the number of parts compared to using separate mounting brackets and positioning elements, while still achieving precise positioning of the baffle plate at the predetermined distance.
Data Source
AI summary
A fuel tank assembly includes a baffle plate mounted under the upper part of the fuel tank to form a predetermined distance between the baffle plate and the fuel tank bottom. The fuel tank assembly includes a fuel tank, a baffle plate having an upper plate in which a penetration hole is formed and a side wall integrally formed at an edge of the upper plate. A bracket mounts the fuel tank and the baffle plate, wherein, the upper plate and the side wall of the baffle plate are mounted to the fuel tank and have a predetermined distance therebetween.