Carbon Fiber 2014-2016 Porsche Cayman 981 GT4 Style Rear Diffuser For Cayman 981

Detailed drawing:   

The function of the rear diffuser

It has the function of guiding the airflow at the bottom of the sports car and improving the car's grip. The diffuser mainly utilizes the principle that the velocity of the fluid is inversely proportional to the pressure, and quickly exports the airflow under the chassis to enhance the downward pressure.

The rear diffuser of a sports car can quickly diffuse and export air, accelerating airflow flow. The higher the airflow speed, the smaller the pressure perpendicular to the airflow. Loading this device at the bottom of the sports car causes the air pressure in the upper part of the car to be greater than the air pressure at the bottom, resulting in a pressure difference, causing the car to generate a force towards the ground, known as increasing the downforce, which gives the sports car tires good grip.

1. The center ground clearance of the airflow channel inside the diffuser has a significant impact on whether the diffuser can generate sufficient downforce. The lower the ground clearance, the greater the downward pressure generated, and the higher the efficiency of the diffuser; The higher the ground clearance, the smaller the downward pressure generated, and the poorer the working efficiency of the diffuser.

2. The height of the airflow inlet and outlet of the diffuser also has a certain impact on the working efficiency of the diffuser. When the height of the air outlet is higher than the height of the air inlet, the suction effect of the diffuser is more obvious, and the airflow will accelerate and exhaust inside the diffuser. On the contrary, when the height of the inlet is greater than that of the outlet, the airflow cannot be discharged from the diffuser in a timely manner, resulting in slow airflow speed and reduced efficiency of the diffuser.