I finally found a pic of what i have been on about!Originally Posted by simontibbett
F1 Technical: Cooling
Just above the driver's head there is an air inlet that supplies the engine with air. It is commonly thought that the purpose of this is to 'ram' air into the engine like a supercharger, but the airbox does the opposite. Between the airbox and the engine there is a carbon-fibre duct (1) that gradually widens out as it approaches the engine. As the volume increases, it makes the air flow slow down. The shape of this must be carefullly designed to both fill all cylinders equally and not harm the exterior aerodynaimcs of the engine cover, this all to optimize the volumetric efficiency.
The following picture displays the uncovered rear part of the championship winning Renault R25. The element marked with (1) is the airbox that guides air into the engine (2) to be mixed with fuel in the cylinders. If is therefore not an aid for cooling but simply a requirement for the engine to function.
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