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Should the car be equipped with mudguards, the wind noise will increase?
Release time:
2024-02-03
The mud baffle of a car plays a great role in rainy days, because it can block the mud and water thrown up in the wheels, so as to ensure the cleanliness of the car body, but the friends who have bought the car may have found that almost all new cars leave the factory without mud. Baffle
The car's mud baffle plays a great role in rainy days, because it can block the muddy water thrown up in the wheels, so as to ensure the cleanliness of the body, but the small partners who have bought the car may have discovered that the new car leaves the factory almost without mud baffle, how so strange, is it the car factory cutting corners? The following and the author together to find out what.
In fact, it is not the reduction of the car factory, but the fender will affect the aerodynamic characteristics of the car, which will increase the drag coefficient of the car, increase the fuel consumption, increase the wind noise, and deteriorate the handling. How can this small fender have such a big side effect? Let's analyze it.
When a car is driving at high speed, it will be subject to great air resistance. The data shows that when the speed of the car exceeds 80 km/h, the air resistance accounts for about 60% of the total resistance of the car; when the speed of the car exceeds 120 km/h, the air resistance accounts for about 80% of the total resistance of the car; When the speed exceeds 180 km/h, the resistance of the car is almost all air resistance, and other resistances are negligible compared with it.
In order to reduce the air resistance of the car, engineers usually design the appearance of the car to be streamlined, and make the bottom of the car as smooth as possible to speed up the air flow speed and make the car have a relatively small drag coefficient. Therefore, many cars use some fenders to wrap the chassis, making the chassis look like a whole piece.
If the car is equipped with mudguards, it will destroy the diversion design at the bottom of the car, hinder the flow of airflow at the bottom of the car, increase the turbulence at the bottom, slow down the air flow speed, increase the drag coefficient of the car, and make the car rise more obvious, There will be a feeling of fluttering when driving at high speed, and the wind noise of the car will increase significantly. According to the test data, if the four wheels of the car are equipped with 5cm long mudguards, the more the drag coefficient of the car increases 0.05, the more the fuel consumption of the car increases by 10%.
Since the side effects of mudguards are so great, why don't car manufacturers prohibit the installation of mudguards? This is mainly because mudguards mainly affect the high-speed performance of cars, but have little effect on low-speed cars. The vast majority of cars in the world are driving at low speeds, even if the installation of mudguards does not increase the fuel consumption of the car significantly, and can block part of the muddy water from splashing on the body, making the car look more beautiful and clean.
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Hebei Shengyi Plastic Technology Co., Ltd.
The company specializes in producing various materials such as composite extrusion, monomer extrusion, rubber plastic product docking molding, injection molded parts, molded parts, EPDM rubber sealing strips, foam rubber strips, PVC sealing strips, high-temperature resistant silicone strips, and various door and window sealing strips.
