Drag reduction device for automatically adjusting wheel spoke hole area

Abstract

The invention discloses an anti-drag device capable of adjusting the wheel spoke hole area automatically, and relates to an anti-drag device capable of changing the hole area between spokes automatically according to the automobile speed. The anti-drag device solves the problem that the wind drag coefficient of a wheel and fuel consumption are enlarged when an automobile is driven at high speed due to the fact that air eddy is generated in a wheel cavity or positions nearby with the existence of a hole between the spokes. The anti-drag device is composed of a supporting frame, foliated cover plates and connecting transmission parts arranged between the supporting frame and the foliated cover plates, the supporting frame is fixed on a wheel hub and is located between a brake disc flange and the wheel hub, and the foliated cover plates are capable of rotating around the supporting frame. The anti-drag device does not work when the automobile speed is lower so that heat generated by frequent braking of the automobile can be emitted effectively and cannot influence the automobile. The anti-drag device is capable of decreasing the hole area between the wheel spokes automatically along with the increase of the automobile speed until the wheel hole is close to entirely closed, so that the wind drag coefficient of the automobile wheel is reduced greatly, fuel consumption is reduced, and the automobile fuel economy is improved.

Description

technical field [0001] The invention relates to a drag reducing device which automatically changes the area of ​​holes between wheel spokes according to the vehicle speed. Background technique [0002] As we all know, the air resistance when the car is running is proportional to the square of the speed. When the car is running at high speed, the greatest resistance comes from the air resistance. Tests have shown that when a car is running at 80 km / h, 60% of the Fuel consumption is used to overcome wind resistance, and for every 10% reduction in drag coefficient, fuel consumption can be saved by 7%. From the perspective of car aerodynamics and fuel economy, the wheels should be as closed as possible to prevent the side airflow from entering the wheel cavity to generate eddy currents, thereby reducing the car's drag coefficient. [0003] In contrast, when the car is running at a low speed, the impact of the drag coefficient on the driving resistance of the car is not very obv...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem that the air vortex is generated in the wheel cavity and its vicinity due to the existence of the holes between the spokes when the car is running at high speed, resulting in the increase of the drag coefficient and fuel consumption of the wheel, the invention provides a drag reducing device that automatically adjusts the area of ​​the spoke holes of the wheel

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