A diffuser, in an automotive context, is a shaped section of the car underbody which improves the car’s aerodynamic properties by enhancing the transition between the high-velocity airflow underneath the car and the much slower freestream airflow of the ambient atmosphere. It works by providing a space for the underbody airflow to decelerate and expand so that it does not cause excessive flow separation and drag, by providing a degree of “wake infill”. The diffuser itself accelerates the flow in front of it, which helps generate downforce.
When a diffuser is used, the air flows into the underbody from the front and sides of the car, accelerates and reduces pressure. There is a suction peak at the transition of the flat bottom and diffuser. The diffuser then eases this high velocity air back to normal velocity and also helps fill in the area behind the car making the whole underbody a more efficient downforce producing device by reducing drag on the car and increasing downforce.
Price range: RM 100- RM 1000
In other words, the diffuser works by giving air a space to decelerate and expand. This causes the vehicle to be more aerodynamic and travel to be less turbulent. When air enters the vehicle at the front end, it causes the vehicle to accelerate, which causes the air-pressure level underneath the vehicle to drop. There is a section that is roughly in the middle of the underside of the vehicle, which is referred to as a suction peak. When the airflow hits the suction peak, it lessens the speed of the air traveling underneath the vehicle and brings it back to a normal speed. This causes a vehicle’s acceleration to be more efficient by reducing drag on the underside of the vehicle.
Well, how about your car?Seems that only powerful car comes with this stuff. But it is okey if you have it at your car. Why not?
Jom komen!