Branched Filter Box Assembly for Vehicle Intake Systems
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Solution Overview
Problem
Conventional intake systems for vehicle engines often face inefficiencies in air filtration and distribution due to unpredictable airflow variations and turbulence, which can affect the accuracy of air sensors and the performance of turbochargers, especially in multi-branch configurations.
Innovation Solution
A filter box assembly with a branched airflow path design that includes an air filter housed in a filter box, where the airflow path is divided into multiple sections at the downstream face of the air filter, reducing turbulence and allowing each branch to have its own compressor and air sensor, enhancing airflow distribution and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single air filter is used for multiple intake branches, then device complexity is reduced and part commonality is increased, but airflow distribution becomes unpredictable and turbulence increases
Solution Approach 1:
The filter box is divided into multiple separate chambers (first clean air chamber, second clean air chamber, etc.) that are physically segmented by internal walls. Each chamber receives filtered air from the air filter and distributes it to a specific intake branch. This segmentation allows independent airflow control for each branch while using a single air filter, thus reducing turbulence and improving airflow distribution stability without increasing overall device complexity.
2Stability of the object's composition
If multiple air filters are used for different intake branches, then airflow distribution to each branch is optimized, but device complexity and part variety increase
Solution Approach 1:
Multiple air filters are merged into a single air filter that serves all intake branches. The filtered air is then distributed to different branches through separate chambers within the same filter box. This combining approach reduces the number of filters needed while maintaining optimized airflow distribution to each branch through the chambered structure, thereby reducing device complexity without sacrificing airflow performance.
3Device complexity
If a conventional single-chamber filter box is used, then device simplicity is maintained, but airflow turbulence and sensor accuracy are degraded
Solution Approach 1:
The filter box is segmented into multiple chambers, each serving a specific intake branch. This segmentation creates separate, controlled airflow paths that reduce turbulence and pulsation effects. Air sensors can be placed in each chamber to accurately measure airflow for its respective branch, improving measurement precision without significantly increasing overall device complexity.
4Stability of the object's composition
If separate filter boxes are used for each intake branch, then airflow consistency for each branch is improved, but manufacturing cost and assembly complexity increase
Solution Approach 1:
Multiple filter boxes are merged into a single integrated filter box with multiple chambers. Each chamber is designed to serve a specific intake branch, maintaining airflow consistency similar to separate boxes. This integration reduces the total number of components, simplifies assembly, and lowers manufacturing costs while preserving the airflow consistency benefits of having dedicated chambers for each branch.
Data Source
AI summary
A filter box assembly for a branched intake system in a vehicle includes an air filter and a filter box housing the air filter. The air filter has a downstream face. The filter box defines an airflow path between a dirty air intake opening and multiple clean air output openings, has a clean air section at the downstream face of the air filter from which each of the clean air output openings open, and includes an interior wall in the clean air section that branches the airflow path to each of the clean air output openings at the downstream face of the air filter.