Intake Air Filter Detection Device for Installation Verification
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Solution Overview
Problem
Existing intake air filters for internal combustion engines lack a simple and effective means to verify correct installation of the filter element, which can lead to mechanical damage and reduced engine performance due to improper or missing filter elements.
Innovation Solution
The intake air filter features an openable housing with a filter detection device, such as a viewing window or a protruding pin, that allows for visual or automated verification of the filter element's correct installation, preventing mechanical damage and ensuring proper fitment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the housing is completely closed without any openings, then the filter element is protected from mechanical damage and a defined inflow is enabled, but it becomes impossible to detect missing or incorrect filter elements after housing closure
Solution Approach 1:
A filter detection device acts as an intermediary element that extends through the housing wall, providing a mechanical indication of filter element presence without compromising the sealed housing structure. The detection device mediates between the need for housing protection and the need for installation verification.
Solution Approach 2:
The filter detection device is pre-configured with a specific length that corresponds to the minimum required filter element length. During filter installation, the filter element must preliminarily engage with the detection device, providing immediate feedback on correct installation before the housing is fully closed.
2Device complexity
If no filter detection device is provided, then the housing structure remains simple and inexpensive, but incorrect filter element installation can lead to mechanical damage and reduced engine performance
Solution Approach 1:
The filter detection device enables the system to self-verify correct filter element installation through a simple mechanical indication visible at the housing exterior. The system serves itself by providing inherent feedback without requiring complex external verification equipment.
Solution Approach 2:
The filter detection function is segmented as a separate, distinct component within the housing structure rather than integrating verification complexity into the main housing design. This allows the housing to remain simple while adding only the minimal necessary detection element.
3Reliability
If a complex verification system is implemented to detect missing filter elements, then installation verification becomes highly reliable, but the device complexity and manufacturing cost increase significantly
Solution Approach 1:
The filter detection device is designed as a simple, inexpensive mechanical indicator that can be easily manufactured and integrated into the housing. Rather than using complex electronic sensors or verification systems, a straightforward mechanical protrusion provides sufficient verification capability at minimal cost.
Data Source
Figure 1
Figure 2~3
Figure 4~5b
AI summary
The intake air filter (10) according to the invention is for cleaning intake air for internal combustion engines, in particular in vehicles. To this end, the intake air filter (10) comprises an openable housing (11) with an inlet (16) and an outlet (17). Disposed between the inlet (16) and the outlet (17) is a filter element (18). In order to check, when the housing (11) is closed, whether a correct filter element (18) has been properly installed, a filter element identification device is provided, which, designed as a dome (28), corresponds to an additional opening (29) in the housing (11).