Vehicle Grille Shutter Controller Heat Damage Prevention
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Solution Overview
Problem
When a vehicle is stopped, maintaining a uniform closed grille shutter state can lead to prolonged heat retention in the engine room, potentially causing heat damage to engine-related components due to increased temperatures during driving.
Innovation Solution
A grille shutter control device that uses a controller to determine if heat damage will occur based on component temperatures, closing the shutter to prevent damage when it won't occur and opening it to discharge heat when damage is likely, with through-hole openings and clearances to manage heat flow, and timer-controlled operations to balance heat retention and discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the grille shutter is maintained in a closed state upon key OFF to retain heat in the engine room, then fuel consumption is improved through quick warming upon re-start, but heat damage occurs to engine-related components due to prolonged high temperature
Solution Approach 1:
The grille shutter control device transitions from a static closed state to a dynamic controlled state. The controller dynamically adjusts the grille shutter position based on real-time temperature monitoring of engine-related components, enabling the system to adapt between heat retention and heat dissipation modes as conditions change
Solution Approach 2:
The system implements a feedback mechanism where temperature sensors continuously monitor engine-related component temperatures and feed this information to the controller. The controller then adjusts the grille shutter position accordingly, creating a closed-loop control system that balances heat retention with heat damage prevention
Solution Approach 3:
The system changes the operational parameters of the grille shutter from a binary open/closed state to a continuously adjustable position based on temperature parameters. The controller modulates the shutter opening degree as a function of measured temperature, transforming the control parameter from fixed to variable
2Object-affected harmful factors
If the grille shutter is opened upon key OFF to discharge heat and prevent heat damage, then heat damage to engine-related components is reduced, but heat retention in the engine room is compromised
Solution Approach 1:
The system dynamically adjusts the grille shutter position rather than maintaining a fixed open state. The shutter remains closed when temperatures are safe and opens progressively as temperatures rise, creating an adaptive response that minimizes heat damage while preserving heat retention benefits
Solution Approach 2:
The controller proactively opens the grille shutter before critical heat damage temperatures are reached. By anticipating the harmful thermal conditions and taking preventive action, the system avoids heat damage without requiring the shutter to remain fully open, thus maintaining heat retention when possible
3Device complexity
If the grille shutter is uniformly controlled without considering component temperature, then control simplicity is maintained, but heat damage cannot be prevented during high-temperature conditions
Solution Approach 1:
Temperature sensors provide continuous feedback on engine-related component temperatures to the controller. This feedback mechanism enables the controller to make informed decisions about grille shutter positioning, preventing heat damage through real-time monitoring without requiring complex predictive algorithms
Solution Approach 2:
The system uses the vehicle's existing temperature monitoring infrastructure and battery power to autonomously control the grille shutter. The controller self-regulates the shutter position based on temperature feedback without requiring external intervention or complex computational resources
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 configuration reduces heat damage to engine-related components while maintaining heat retention in the engine room, enhancing fuel efficiency by quick warming upon re-start and minimizing heat-related issues during engine operation.
Implementation Method 1
the heat damage on the exhaust shutter valve due to radiant heat of the exhaust pipe through the tunnel cover can be reduced by the through-hole opening
Implementation Method 2
an encapsulation structure exhibiting heat insulating properties and covering an engine
Implementation Method 3
the flow of heat from the clearance to a grille opening (a shroud panel opening) can be promoted in the encapsulation structure such as the engine room to discharge the heat to the outside of the encapsulation structure through the grille opening
Data Source
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AI summary
A grille shutter control device of a vehicle includes an encapsulation structure covering an engine, a grille shutter provided at an opening formed at a front wall portion of the encapsulation structure, an actuator configured to move the grille shutter to open/close the opening, and a controller configured to control the actuator. The controller determines whether or not heat damage occurs on a related component relating to the engine upon key OFF, closes the grille shutter upon key OFF in the case of determining that the heat damage will not occur, and opens the grille shutter upon key OFF in the case of determining that the heat damage will occur.