Vehicle Engine Cooling Fan Shroud with Rotary Shutter and Flaps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle systems for controlling air flow into the engine room often compromise fuel efficiency by continuously operating the cooling fan, even when not necessary, and fail to optimize aerodynamic performance at high speeds, leading to increased drag.
Innovation Solution
A system comprising a rotary shutter, flaps, and a control unit that adjusts the air flow and cooling fan operation based on the vehicle's driving state, using sensors to determine the optimal configuration for minimizing fan operation and reducing drag, thereby improving cooling and aerodynamic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling fan is continuously operated to maintain engine temperature, then cooling performance is improved, but fuel efficiency deteriorates
Solution Approach 1:
The cooling fan operation is made dynamic rather than continuous. The control unit adjusts fan operation based on real-time driving conditions, engine temperature, and cooling requirements. The system transitions from a static continuous operation mode to a dynamic conditional operation mode, activating the fan only when cooling is actually needed.
Solution Approach 2:
The system changes the operational parameters of the cooling fan based on multiple factors including engine temperature, vehicle speed, and cooling load. By adjusting fan speed and operation timing according to varying parameters, the system optimizes the balance between cooling performance and energy consumption.
2Loss of energy
If air flow into the engine room is shut off at high speed to reduce drag, then fuel efficiency is improved, but cooling performance may deteriorate
Solution Approach 1:
The air flow control system dynamically adjusts the amount of air entering the engine room based on vehicle speed and cooling requirements. At high speeds, the system reduces air flow to minimize drag, while at lower speeds or when cooling demand is high, air flow is increased to maintain proper engine temperature.
Solution Approach 2:
The system varies air flow parameters according to driving conditions. By changing the air flow rate based on vehicle speed, engine temperature, and cooling load, the system optimizes the trade-off between aerodynamic drag and cooling effectiveness.
3Use of energy by moving object
If the cooling fan is operated only out of necessity based on driving state, then fuel efficiency is improved, but cooling performance may be insufficient under certain conditions
Solution Approach 1:
The system incorporates feedback mechanisms where sensors continuously monitor engine temperature, cooling fluid temperature, and driving conditions. This information feeds back to the control unit, which adjusts fan operation in real-time to ensure adequate cooling while minimizing energy consumption. The feedback loop ensures cooling performance is maintained when actually needed.
Solution Approach 2:
The system anticipates cooling needs by monitoring driving conditions and engine parameters in advance. By predicting when cooling will be required based on current state and driving patterns, the system can prepare appropriate cooling measures before thermal stress occurs.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A system for controlling an air flow rate into a vehicle engine room may include a fan shroud in which a cooling fan including a fan motor and a fan blade may be mounted, a rotary shutter which may be provided in the fan shroud while corresponding to an operation area of the fan blade, and in which an area through which air passes may be varied in a circumferential direction, a plurality of flaps which may be provided in the fan shroud, and opens and closes a part of a portion where the rotary shutter may be not mounted, and a control unit which controls an open area of the rotary shutter, operations of opening and closing the plurality of flaps, and an operation of the cooling fan in accordance with an operating state of a vehicle.