Why was the blown diffuser banned?

Why was the blown diffuser banned?

Hot blowing wasn’t viable over a long period, as it increased fuel consumption and affected the engine’s lifespan. But used sparingly it could offer a tangible performance advantage. The FIA sought to reign in the practice and was set to introduce an in-season ban on the practice.

When was the blown diffuser banned?

2012
The FIA attempted to stamp out the practice for 2012 by specifying a box region where the exhaust outlet could be placed. It effectively banned the current crop of exhaust-blown diffusers but, as we’ll find out in the next article in the ‘Banned’ series, this didn’t stop the teams for long…

How does an exhaust blown diffuser work?

The diffuser is directly ‘blown’ by the exhaust gases, accelerating the airflow passing through it and improving the extraction of air from underneath the car. This also increases the overall quantity of air feeding the diffuser and sucks the car to the track at high speeds.

Why do blown diffusers sound like that?

That crackling sound you hear is a bunch of tiny explosions happening in the header each time an exhaust valve opens. Generally the drivers need the most rear down force during the turn and power out of the corners.

What does a blown exhaust sound like?

Hissing noises suggest that there is a crack in the exhaust pipe, exhaust manifold or that there is a leaking gasket. Chugging noises are also a sign of exhaust problems, in this case it could be a blockage in the exhaust system. You may hear a rattling sound under your car if your exhaust has become misaligned.

What does a blown exhaust mean?

In time, this heat causes first cracks, and eventually, small holes, to form. These are what cause the phenomenon known as ‘blowing’, which creates the distinctive resonating noise and vibration which is a symptom of the exhaust being about to fail.

Can I drive with a blown exhaust?

While you can technically drive with a broken exhaust, it’s neither safe nor legal and poses a number of issues when you’re out on the road. Whether your exhaust is simply cracked, is partially hanging off or has fallen off completely, it’s an important part of your vehicle which needs your immediate attention.

What does blown diffuser mean?

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. 2.

What happens if your exhaust blows?

Over time, the fumes leaking from a cracked exhaust pipe will damage surrounding components, and could even cause a fire. If there’s a hole in the exhaust close to the engine, these hot gases can leak out and blow straight at other components — causing heat damage and increasing the risk of fire.

What causes a blown exhaust?

Exhaust blow-by is the term used to describe combustion gases inside an engine that leak past the piston ring seals and into the engine crankcase. To a degree, blow-by is normal in a healthy engine and is the reason that we have mechanisms such as the PCV (positive crankcase ventilation) system.