I know it's probably retarded for some reason, i'd love to know why:
All of those chavs, poorfags, and whatever else is quite a large market. I'm absolutely sure they would love to get ~10hp gain in their NA cars for small money, and i think it would be possible to create ~0.1-0.2 bar pressure with electric fans. This kind of device could be attached easily and without exhaust modifications.
But for some reason, it's not a thing, so i guess it's impossible to do. Why? Are stock manifolds/injections not capable of handling positive pressure? Or am i wrong about electric fans being able to pull off 0.1 bar without killing car battery?
Why bother when I can get 15HP easy with one of those swirly things that makes a magic vortex in my intake?
Sebastian Davis
>i think it would be possible to create ~0.1-0.2 bar pressure with electric fans
It is, Audi are experimenting with it. They are very expensive to get the required airflow for even a modestly sized engine though and that's why Audi are looking to use them as infill around the conventional turbo.
Michael Peterson
look, i know it's dumb for some reason. i'd just like to know why.
Expensive, like energy-expensive? Or just cost-expensive to make such electric compressor?
If you speak a bit of German, the guy tests one of the prototypes on the TTRS platform.
Wyatt Bennett
I'm not positive, but I think it's very very energy expensive.
If you think about a standard electric air compressor, it takes a couple minutes for one of these things to get like 24L of air up to a decent PSI level.
Some quick googling and armchair engineering says that a 1.5L engine at 3000rpm would consume about 2250L of air a minute. That's a fuckton.
Now you can blow a lot of air, but compressing it is much much more energy expensive.
Camden Hughes
Go spec the cost of the power electronics needed to step up to 48V and the cost of a 10hp compressor and the cost of retrofitting a regenerative braking system.
If you want to do something easier try just speccing the biggest 12V air compressor you can make and the needed control equipment to keep you from destroying the battery.
You will rapidly discover that your idea is not a new one and the reason why you don't see it done is because it's fucking hard, which is why OEMs with legions of engineers and big budgets are the ones that are actually doing it.
Christian Wood
Even if you can't get positive pressure, wouldn't reducing vacuum be better than nothing?
Justin Jones
Not by very much. There was a gizmo for sale a while back that would activate a small fan at WOT to get you closer to atmospheric pressure, and if you believe dyno charts it did add a few extra torks to your crapbox.
But it would only turn on for a few moments at a time because it btfo the battery and then you need to give it time to charge back up and not boil on you.
