Closure Unit Defect Detection via Position Verification
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Solution Overview
Problem
Existing closure units for air inlets in motor vehicles are difficult to diagnose for defects and malfunctions, requiring manual inspection by technical operators, which is time-consuming and inefficient.
Innovation Solution
A simplified closure unit design with a single drive unit controlling three pivoted closure flaps, using coupling members and position stops to verify the functionality of each flap, allowing for rapid identification of defects through controlled activation and position verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a closure unit with multiple closure flaps is used to control air inlet flow, then the ability to reduce air resistance and improve fuel consumption is enhanced, but the complexity of detecting and diagnosing defects increases
Solution Approach 1:
The patent implements a feedback mechanism where sensors detect the position of each closure flap and provide information to a control unit. The control unit monitors whether each flap reaches its intended position (closed or open) and can identify defects when flaps fail to reach their target positions, thereby resolving the contradiction between having multiple flaps for energy efficiency and the complexity of detecting defects
Solution Approach 2:
The closure unit performs self-diagnosis by automatically monitoring its own operational status. The system uses sensors and control units to detect position deviations of closure flaps during operation, enabling the system to identify its own defects without requiring external manual inspection, thus reducing detection complexity while maintaining multiple flaps for energy management
2Productivity
If multiple closure flaps are used to optimize air flow control, then the cooling performance and emissions control are improved, but the time required for manual inspection increases
Solution Approach 1:
The patent replaces manual mechanical inspection with an automated electronic monitoring system. Sensors and control units automatically track the position and operation of multiple closure flaps during vehicle operation, eliminating the need for time-consuming manual inspections while maintaining the multiple flaps necessary for optimized cooling performance and emissions control
3Device complexity
If a single drive unit controls multiple closure flaps, then the device complexity is reduced, but the difficulty of identifying which specific flap is defective increases
Solution Approach 1:
The patent segments the monitoring function by assigning individual sensors to each closure flap. This allows the system to track the position of each flap independently, enabling precise identification of which specific flap is defective even though all flaps are controlled by a single drive unit. The segmentation of monitoring compensates for the unified control approach
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 quick and reliable detection of defective closure flaps during operation, reducing the need for manual inspections and improving the efficiency of identifying and addressing malfunctions, thus enhancing the vehicle's performance and emissions control.
Implementation Method 1
a first closure flap (18) which can be pivoted about a first rotation axis (16), a second closure flap (22) which can be pivoted about a second rotation axis (20), a third closure flap (26) which can be pivoted about a third rotation axis (24)
Data Source
AI summary
There is described a closure unit (14) for an air inlet of a motor vehicle which comprises three closure flaps (18, 22, 26) which can be pivoted about a rotation axis (16, 20, 24). In a closed position, the closure flaps (18, 22, 26) close the air inlet and a closure flap which is referred to as a second closure flap (22) abuts a closed position stop (36). In an open position, the closure flaps (18, 22, 26) release the air inlet and a closure flap which is referred to as the third closure flap (26) abuts an open position stop (40). Furthermore, a method for detecting defective closure flaps (18, 22, 26) of such a closure unit (14) is explained. Furthermore, a motor vehicle having one or more air inlets is presented, wherein at least one of the air inlets is provided with such a closure unit (14).