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Turbo Fan?

smurfpirate

By smurfpirate,
in Engines & Forced Induction

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Samon Proficient

Samon

Posted
Posted
understandably

to increase pressure by at least 2 psi you need to have a fan that will draw more power running it then it would help the engine make....

Exactly what I was trying to tell my mate with an XR8 Ute... he wants to make that exact setup... he's got a motor that will do 25,000RPM on 12V at 2.3A... but I doubt it will be able to push any kind of pressure...

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342Four Grand Master

342Four

Posted
Posted

there is one way of increasing pressure in the intake without turbo but it could be a bit tricky

ive seen a guy use a model airplane prop and a biggish motor as a cooling device for his computer

apparently it pushed over 150 cubic feet a minute, but in the process was very very noisy and rather big - over 3inchs in diameter

you would have to make sure nothing fell apart in the intake otherwise it could get nasty

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  • 3 weeks later...
Samon Proficient

Samon

Posted
Posted
it's not just about pressure, it is about airflow. if one of these fans can increase your airflow it may give you a power gain even if it doesn't raise inlet pressure.

But if i understand correctly, airflow is no use unless the air has somewhere to go. Pressure is what is needed in this case as unless extra pressure is applied, you're only ever going to get 2.5L of air/fuel into your engine... no matter how much airflow you have. all this would mean is that it might get there quicker... The main concept behind turbocharging is that you effectively get more air/fuel into the same size engine, producing the power of a larger engine without the weight.

Anyway, a turbocharger can spin at speeds of up to 180,000 RPM, good luck finding an electric motor that can do that sort of speeds *and* apply 5-7PSI of pressure *and* not draw a million Amps!

Just my 2c.

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R34GTFOUR Mentor

R34GTFOUR

Posted
Posted
i'm not sure of the exact physics of it, but in a turbo car 16psi of pressure from a large turbo makes much more power than 16psi from a smaller turbo...

i dunno how efficiency ranges and heat etc... come into

hit the nail on the head.

Pressure is just a type of restriction, air FLOW is what your chasing.

just think of it this way if you turn on a hose you get wet, you turn on a fire hose you get blown away. Same pressure, just more flow hence more power.

dont waste your time with electric fans, i remember reading some article where a guy spent alot of money trying to set one up and he ended up getting around 5psi, but the electric blower was huge, and it was very noisy.

If you want forced induction, turbo or supercharge it

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  • 1 month later...
steven22 Collaborator

steven22

Posted
Posted

You have got to be kidding. A fan. Getting the air there faster wont do much...........at all. What you want is more air packed into the same volume going into the engine, then perhaps some sort way of getting it in faster.

If this is for an r32, an RB20det wont cost you much and there is enough of them out there. I suggest you get one, then worry about how much you can get through those pipes.

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naga Collaborator

naga

Posted
Posted

damn when i saw the title i thought someone put a turbofan on a skyline. (the engines on 737s etc)

the idea is quite silly though. the power required to drive a compressor for a couple psi would be in the order of kW. you probably could get a motor that powerful but it'd be a huge waste of space and power. you would need another alternator to provide that power.

to think of doing this with a 12v @ 2.3A (roughly 25W) motor is absurd. whoever that guy is must have no idea about engineering at all haha!

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  • 3 weeks later...
J3TR33 Community Regular

J3TR33

Posted
Posted (edited)

if you go on ebay and search electric turbo.. you will find some for sale...

or www.force-flow.com.au

best bet is to go force flow and not some cheap china product...

it would be good to see someone experiment and see what power results they get..

p.s: they also have twin-turbo... might wana try that

Edited by J3TR33
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