Air Guide Flap Locking for Inner Flap Fault Detection
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Solution Overview
Problem
Existing air supply control systems in motor vehicles are unable to reliably detect defects, such as a broken inner flap, in flap arrangements with more than two flaps, leading to potential failures in thermal management.
Innovation Solution
The air guide control system incorporates a spring mechanism that locks the entire flap arrangement in motion when a defect is detected, ensuring that the actuator can report the error to the control unit and maintain a fail-safe position with the flaps at least partially open.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a flap arrangement with multiple flaps is used to control air flow, then the control precision and thermal management capability are improved, but the reliability of defect detection deteriorates because inner flap defects cannot be detected
Solution Approach 1:
The patent implements a feedback mechanism where the actuator detects the rotational position of the flap arrangement and monitors for anomalies. When a flap is missing or defective, the actuator detects the abnormal rotational behavior or position deviation and sends a signal to the control unit, enabling defect detection through continuous feedback on the system's operational state.
Solution Approach 2:
The patent introduces an intermediary detection mechanism between the flaps and the control unit. This intermediary system monitors the rotational movement and position of the flap arrangement, translating physical flap states into detectable signals that indicate the presence or absence of flaps, thereby enabling indirect detection of inner flap defects.
2Adaptability or versatility
If the flap arrangement is made fully adjustable for thermal management, then the adaptability is improved, but the complexity of the control system increases
Solution Approach 1:
The patent implements a universal control approach where the actuator and control unit serve multiple functions: they not only adjust the flap positions for thermal management but also simultaneously monitor for defects and manage the fail-safe mechanism. This multi-functionality reduces the need for separate dedicated components for each function.
Solution Approach 2:
The patent combines the adjustment control and defect detection functions into a single integrated control system. The actuator that adjusts flap positions also serves as the detection mechanism, and the control unit manages both normal operation and fault response, thereby reducing overall system complexity through functional merging.
3Reliability
If the flap arrangement can be selectively opened and closed for thermal management, then the thermal management effectiveness is improved, but the risk of undetected defects leading to failure increases
Solution Approach 1:
The patent implements a preliminary protective measure through the fail-safe mechanism. Before a defect can cause harmful effects, the system proactively detects the defect and automatically activates the fail-safe position, preventing the defective flap arrangement from continuing to operate and potentially causing damage to downstream components.
Solution Approach 2:
The patent prepares in advance for potential failures by implementing a fail-safe position that automatically activates upon defect detection. This beforehand cushioning ensures that even if a flap defect occurs, the system has a pre-prepared safe state that prevents harm to the thermal management system and downstream units.
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
This solution enables reliable fault detection for inner flaps, preventing further movement of the flap arrangement and ensuring continuous air supply to downstream units, thus enhancing the reliability and safety of thermal management systems.
Implementation Method 1
The air guide control system incorporates a spring mechanism that locks the entire flap arrangement in motion when a defect is detected
Implementation Method 2
The drive unit rotates the flaps of the flap arrangement about their respective flap rotation axes arranged at a distance from one another
Implementation Method 3
the flap arrangement controlling an air flow generated by a driving wind by the flap arrangement selectively opening and closing the air opening
Data Source
AI summary
The disclosure relates to an air guide control system with a flap arrangement including flaps which can be rotatably inserted into a joining partner. An actuator drives a damper and a coupling rod transmits the torque of this driven damper to the remaining dampers of the damper arrangement. In the event of a flap fracture of at least one flap, a spring, locks the flap arrangement against further movement, so that error information is reported to the actuator via the coupling rod.