flaps/covers around radiator fan on backside of radiator? are they necessary?
08-20-2003, 08:13 AM
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I'd guess they open when car's moving but fan isn't.
I imagine that pressure differential across them causes them to open and reduce pressure inside the backside fan shroud when the fan is stopped but the car is moving. I guess that the pressure differential across them that's developed by the fan alone when the car's stationary isn't enough to cause them to open -- thus keeping the fan ducting intact.
The whole ducting and engine compartment design is interesting. It seems that the entire engine compartment behind the radiator is supposed to be a low pressure plenum.
The whole ducting and engine compartment design is interesting. It seems that the entire engine compartment behind the radiator is supposed to be a low pressure plenum.
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