Fender shape and angle design
When designing automotive plastic fenders, shape and angle are key factors in taking into account both mud-blocking function and aerodynamics. From the perspective of mud-blocking function, the shape of the fender needs to cover the appropriate area behind and on the side of the wheel to prevent mud, sand, water and other splashes from splashing onto the body and chassis. Generally, an arc design extending backward and downward is adopted, which can effectively guide impurities such as mud and water to leave the wheel area in a specific direction. At the same time, from the perspective of aerodynamics, the leading edge of the fender should be designed to be streamlined so that it can reduce air resistance during vehicle driving. For example, the leading edge of the fender is designed as a smooth curved surface with a certain inclination angle so that the airflow can flow along the surface, avoiding turbulence and reducing the drag coefficient. Moreover, the connection angle between the fender and the side of the body also needs to be carefully designed to ensure that the mud-blocking effect is maximized without affecting the air flow.
Surface texture and air flow channel design
The surface texture and internal air flow channel design of the fender are crucial to taking both into account. Surface texture can affect the adhesion and flow of air and mud and water on the surface of the fender. Appropriate texture can increase the adhesion of mud and water on the Fender, making it easier to slide down the Fender without excessively hindering air flow. In terms of air flow channel design, some channels that guide airflow can be designed inside or on the edge of the Fender. These channels can help optimize the flow of air around the Fender and reduce air turbulence and pressure differences. For example, designing some small ventilation slots at the rear of the Fender allows air to flow more smoothly, reducing the lift or drag caused by air pressure differences, and also helps to better guide the mud and water thrown from the wheels away from the body.
Material selection and thickness distribution
The material selection and thickness distribution of automotive plastic Fenders also have an impact on the function. The material should have a certain degree of flexibility and strength to withstand the impact and deformation of mud and sand without breaking. In terms of aerodynamics, plastic materials that are lighter and have good aerodynamic performance are preferred. For thickness distribution, the Fender can be appropriately thickened in key force and mud-blocking areas to enhance its durability and mud-blocking effect. However, without affecting the structural strength, other areas should be kept as thin as possible to reduce the obstruction to air flow. For example, the bottom area near the wheel is thickened, while the upper and edge areas of the fender are kept thinner, so that air can flow more smoothly and achieve a balance between mud guarding and aerodynamics.
Coordinated design with the overall body
The automotive plastic fender cannot be designed in isolation, but must be coordinated with the overall body. The design of the fender should be integrated with the lines and curves of the body so that the air can smoothly transition when flowing through the transition area between the body and the fender. This requires considering the overall shape and aerodynamic characteristics of the body at the beginning of the design, so that the fender becomes part of the aerodynamic design of the body. For example, the edge of the fender can be naturally connected with the lines on the side of the body to avoid abrupt shapes, thereby ensuring the smooth flow of air around the body, while achieving a good mud guarding function and improving the overall performance and appearance quality of the car.
Through the comprehensive design of the above multiple aspects, the automotive plastic fender can optimize the aerodynamic performance while effectively achieving the mud guarding function, providing a guarantee for the safety, comfort and efficient driving of the car.
