Vehicle Cabin Air Inlet Testing With Controlled Pollutant Mixing
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Solution Overview
Problem
Existing methods for testing cabin air quality components in vehicles are compromised by environmental conditions and lack precision, making it difficult to evaluate their performance uniformly and accurately.
Innovation Solution
A system and method involving a duct with a mechanical connection interface to a vehicle's air inlet, a test substance provider, and detectors to assess the cabin air quality component's performance by mixing and delivering a controlled test substance, allowing evaluation in a controlled environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If test drives in different environments are conducted to evaluate cabin air quality component performance, then the meaningfulness of tests is maintained, but the testing process becomes time-consuming and difficult to standardize
Solution Approach 1:
The test substance provider pre-prepares standardized test substances (pollutants, particles, gases) and introduces them through the duct system before actual testing begins. This preliminary preparation eliminates the need for time-consuming field test drives while ensuring consistent test conditions are established in advance
Solution Approach 2:
A duct system acts as an intermediary between the test substance provider and the vehicle's air inlet. The duct introduces controlled test substances directly into the vehicle's air intake system, simulating environmental conditions without requiring actual exposure to varying external environments, thus standardizing the testing process
2Device complexity
If test substances are introduced directly without controlled mixing, then the testing setup becomes simpler, but the uniformity and precision of test substance delivery is compromised
Solution Approach 1:
The duct system is segmented into multiple sections: a first section for introducing the test substance, a second section for introducing carrier substance (ambient air), and a mixing section. This segmentation allows independent control of each substance stream while ensuring thorough mixing, achieving precise delivery without excessive overall system complexity
Solution Approach 2:
The system controls the flow rates and concentrations of test substances and carrier substances independently through the separate inlets. By adjusting these parameters (flow rate, concentration, timing), precise and uniform test substance delivery is achieved while maintaining manageable system complexity
3Device complexity
If environmental conditions are used for testing, then the test setup remains simple, but the precision and uniformity of test results are compromised due to varying external factors
Solution Approach 1:
The system creates a controlled test environment by introducing standardized test substances through the duct system, effectively creating an 'inert' or controlled atmosphere that isolates the testing from varying external environmental conditions. This ensures precise and uniform test results without requiring complex environmental control systems
Solution Approach 2:
Instead of testing in actual environmental conditions, the system creates a simplified copy or simulation of environmental pollution conditions by introducing representative test substances (pollutants, particles, gases) through the duct. This copying approach maintains measurement precision while avoiding the complexity of controlling or adapting to real environmental variations
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
Enables precise and uniform testing of cabin air quality components by simulating various environmental conditions, independent of external factors, ensuring reliable performance evaluation.
Implementation Method 1
the duct not only fulfills the functionality to reliably provide the test substance and the carrier substance to the cabin air quality component under test, but also allows to reliably mix the test substance and the carrier substance
Data Source
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Figure 3~4
AI summary
The disclosure relates to a system (10) for testing a cabin air quality component (12) of a vehicle (14). The system (10) comprises a duct (16), wherein the duct (16) comprises a mechanical connection interface (18) configured to be coupled to an air inlet (20) of the vehicle (14) such that the duct (16) and the air inlet (20) of the vehicle (14) are fluidically connected. The duct (16) comprises a first inlet (22) configured to receive a carrier substance and a second inlet (24). A test substance provider (26) is fluidically connected to the second inlet (24). Moreover, the system (10) comprises a first detector (34) configured to detect the test substance and configured to detect the test substance in an interior of the vehicle (14) or in an exterior of the vehicle (14). Furthermore, the disclosure relates to a method for testing a cabin air quality component (12) of a vehicle (14).