Active Air-Intake Grille Control for Vehicle Cooling and Drag
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Solution Overview
Problem
The existing technologies face a contradiction between reducing wind resistance and maintaining effective heat dissipation in vehicles, leading to increased energy consumption when the active air-intake grille is closed during driving.
Innovation Solution
A method that jointly controls the opening angle of the active air-intake grille and the operation of the cooling fan based on the current vehicle speed and heat-dissipation demand, using a predetermined opening angle table and calculation equation to determine the target opening angle and speed gear required for efficient heat dissipation while minimizing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the active air-intake grille is closed to reduce wind resistance, then the wind resistance coefficient is reduced and vehicle stability and economy are improved, but the air intake of the front-end cooling module is reduced, resulting in a significant decrease in heat-dissipation capacity and increased low-voltage energy consumption
Solution Approach 1:
The patent applies dynamics by making the air-intake grille adjustable rather than fixed. The grille can dynamically change its opening angle based on real-time conditions (vehicle speed, heat-dissipation demand, ambient temperature) to optimize the balance between wind resistance reduction and heat dissipation requirements. This dynamic adjustment allows the system to adapt to varying operational states, reducing energy consumption while maintaining cooling performance when needed.
Solution Approach 2:
The patent changes the parameter of the grille opening angle based on different operating conditions. By adjusting the opening angle parameter according to vehicle speed, heat-dissipation demand, and ambient temperature, the system optimizes the trade-off between aerodynamic performance and cooling efficiency, thereby minimizing low-voltage energy consumption while meeting thermal management requirements.
2Loss of energy
If the active air-intake grille is closed to reduce wind resistance, then the wind resistance coefficient is reduced, but the air intake of the front-end cooling module is reduced, resulting in a significant decrease in heat-dissipation capacity
Solution Approach 1:
The system dynamically adjusts the grille opening angle based on real-time heat-dissipation demands and vehicle conditions. When cooling is required, the grille opens to appropriate angles to ensure sufficient air intake for the cooling module. When cooling demand is low, the grille closes to reduce wind resistance. This dynamic control resolves the contradiction between wind resistance reduction and heat-dissipation capacity maintenance.
Solution Approach 2:
The patent implements feedback control by continuously monitoring vehicle speed, heat-dissipation demand, and ambient temperature, then using this information to adjust the grille opening angle. The system responds to changing thermal conditions and aerodynamic requirements, optimizing the balance between reducing wind resistance and maintaining adequate heat dissipation capacity through closed-loop control.
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 approach allows the active air-intake grille and cooling fan to operate in the lowest energy-consumption mode while meeting the vehicle's heat-dissipation demands, thereby minimizing overall energy consumption.
Implementation Method 1
determining, according to the residual heat-dissipation demand, a target speed gear required for the cooling fan of the vehicle to provide the residual heat-dissipation demand
Implementation Method 2
determining, according to the current speed and the current heat-dissipation demand, a target opening angle of an active air-intake grille matching both the current speed and the current heat-dissipation demand
Data Source
AI summary
The present disclosure provides a method for dissipating heat from a vehicle, a storage medium, and a vehicle. The method includes the following steps: determining a target opening angle of an active air-intake grille based on a current vehicle-speed and a current heat-dissipation demand of the vehicle while the vehicle is in a driving state; determining a residual heat-dissipation demand of the vehicle based on the current heat-dissipation demand and a heat-dissipation demand that can be provided by the target opening angle; determining, according to the residual heat-dissipation demand, the target speed gear required for the cooling fan of the vehicle to provide the residual heat-dissipation demand; and adjusting an opening angle of the active air-intake grille of the vehicle to the target opening angle and a speed gear of the cooling fan to the target speed gear, to perform a heat dissipation for the vehicle.