Why did F1 ban blown diffusers?
The reason for the ban is the FIA is unhappy that ‘hot blowing’ is a waste of fuel, and believe that blown diffusers in general are making use of moving parts of the engine to influence aerodynamics, and therefore infringe a regulation against moveable aerodynamic devices.
What is exhaust blown diffuser?
A blown diffuser is basically a way of using the exhaust gases to interact with the diffuser airflow. There are two main purposes for this; 1. To try to move the wake from the rear wheels outwards where it will cause less disturbance.
When were blown diffusers used in F1?
On occasion, common design features in old cars can make a return as regulations and trends change. An example of this is the blown diffuser, which had a huge impact in F1 as the V8 era came to an end, having been used during the 1980’s and ’90’s before falling out of favour as the regulations changed.
Do F1 cars have diffusers?
The air flowing below the car, exits through the diffuser on the rear of the car. The diffuser is usually find on each side of the central engine and gearbox fairings and is, by the rules, located behind the rear axle line. The diffuser creates nearly 50% of the cars downforce.
What happened to blown diffusers in F1?
And just like that, the issue with blown diffusers that had existed in the past was being unravelled, as downforce was still being created when the driver was braking and rolling into the apex. The FIA sought to discourage this practice, moving to change the regulations about the location of the exhaust for 2011.
What is the purpose of a blown exhaust diffuser?
Exhaust Driven (Blown) Diffusers 1 To try to move the wake from the rear wheels outwards where it will cause less disturbance 2 To re-energize the low pressure air at the back of the diffuser to create more rear downforce. More
Can I point the exhaust exit down at the diffuser?
Well, the first thing to note is that it is not possible to point the exhaust exit down at the diffuser in same way as before, this will not necessarily prevent the exhaust jet itself from blowing in that direction. When an exhaust jet exits into a cross-stream of fresh air, the exhaust jet bend with the air stream, effect called “Downwash”.
How do F1 exhausts work?
F1 exhausts don’t just extract the exhaust gases from the engine, but can also be used to optimise engine, aerodynamic and turbocharger performance. How do exhausts work? The journey of the exhaust gases begins once combustion has occurred.