Vehicle Radiator Flap Fail-Safe Wind Pressure Release
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Solution Overview
Problem
Existing vehicle radiator flap control systems fail to ensure sufficient air inflow for cooling, leading to overheating issues due to malfunctioning drive motors, power interruptions, or improper flap operation.
Innovation Solution
A flap control apparatus and method that includes upper and lower flaps, a drive unit, a locking unit, a movement detection sensor, and an engine controller, which perform a fail-safe operation by releasing the lower flap from a locked state using drive wind pressure when a malfunction occurs, ensuring the upper flap opens and the lower flap is unlocked, and an alarm is triggered if communication with the engine controller is lost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive motor is used to open or close the flaps, then the air flow into the radiator can be controlled, but the system may malfunction causing insufficient cooling
Solution Approach 1:
The flap control system is divided into two independent flaps (upper and lower) that can be controlled separately. The upper flap is controlled by the drive motor while the lower flap has a locking unit that can be independently activated. This segmentation allows the system to maintain cooling function even if one flap or control component fails.
Solution Approach 2:
The locking unit is designed to preemptively lock the lower flap in a closed position, creating a safety mechanism that compensates for potential drive motor failures. This prior cushioning ensures that even if the drive motor malfunctions, the lower flap remains locked and prevents complete loss of cooling capability.
2Reliability
If the locking unit locks the lower flap to prevent opening by drive wind pressure, then cooling is maintained, but the system becomes more complex
Solution Approach 1:
The locking unit utilizes the existing drive wind pressure that naturally opens flaps as part of its operating mechanism. By designing the locking unit to work with rather than against the natural aerodynamic forces, the system achieves reliable cooling maintenance without requiring additional complex actuation mechanisms.
3Reliability
If communication between controllers is monitored for fail-safe operation, then system safety is improved, but control complexity increases
Solution Approach 1:
The drive controller continuously monitors communication status with the engine controller and uses this feedback to determine when to activate the fail-safe operation. This feedback mechanism allows the system to automatically detect failures and switch to safe mode without requiring complex diagnostic algorithms or additional sensors.
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
The solution ensures continued engine cooling by opening the flaps during malfunctions or power failures, preventing overheating and alerting the driver to potential issues through an alarm system, thereby maintaining engine performance and safety.
Implementation Method 1
allow a corresponding flap to be opened by drive wind pressure by releasing the corresponding flap from a locked state
Data Source
AI summary
A flap control apparatus of a vehicle and a control method thereof are disclosed. The flap control apparatus can control flaps, disposed at the front side of the vehicle to adjust inflow of air into a radiator, and can perform a fail-safe operation by releasing a corresponding flap from a locked state so that the corresponding flap can be opened by drive wind pressure upon occurrence of a malfunction making the flaps substantially non-operative, thereby preventing the engine from overheating.