CFM. Look it up. It explains everything.

 

get this guy to punch start the 'blower'

 

The general assumption is these things don't work since it takes some serious engineering to get an electric supercharger to work.

It's usually pretty easy to prove they dont work by looking at the size of the motor. This one uses a good size motor so I wasn't sure.

So I did some research.

The S2000 flows about 250 CFM. If you want to make more power in the S2000 you need to get it to flow 260 CFM. It's easy for fans to flow 260 CFM.

So can you throw in a 260 CFM fan in and make more power? NO!

The way you get an engine to flow more is by generating boost. The extra pressure in the intake forces more air through the engine, this makes more power.

So can these fans make boost? Again the answer is NO! It takes a specially designed fan to generate boost. You can't just use a regular fan and turn it faster and harder with a bigger motor. You can make the fan flow more but once the pressure starts to build the air just flows back through the fan. It's impossible for these fans to make boost. You need a fan that is designed the same as a turbo.

TLDR:

These fans are not designed to generate boost therefore they cannot force more air through the engine thus no power gain.

 

I think that's pretty much it. Assuming an ideal compressor design, the main problem is the car's electrical system simply cannot sustain the output required to power the compressor to produce a significant amount of boost.

Just Googling for shits and grins, I was able to find something about an electric supercharger that ran off a separate (large) battery pack stored in the trunk. Basically the idea was to use it in short bursts, like nitrous, and let the alternator slowly recharge the batteries between bursts.

I wonder if it would be possible to do an electric turbocharger by rigging up a turbine as an alternator for a separate, high voltage electrical system, and using a large capacitor as a buffer?

 

I said anytime you want it. I really doubt you will want to spool it at start up.

It can be controlled by RPM, TPS, load, and so on.

Enjoy facts. Click me for PROOF.



I can be done, it's been done, it works. Does it need refinements? Yes, but the idea has been proven.

 

Anyone who thinks that those cheap "electric superchargers" that work with a regular small fan will make the car fly, should go and learn the very basics of school physics.
Ofcourse the fan might make the car gain a few hp, but it will never flow alot of air under pressure.

 

For an even more compact solution of the above Thomas Kight supercharger,
he could use permanent magnet AC motors. With neodym magnets of N50 grade. Now those motors could be pretty small and still support 20hp.

 

This motor is rated 8kW which is well over 10hp. Lehner also makes another motor that is abit longer called 3080 rated at 11kW. I do not know what grade of magnets that these use, but it sure is some better quality if not the best. 3 of these motors should work for Thomas Knights SC. It will not be cheap tho, and the speed controllers are expensive aswell.

 

Here is a very short list of the cons to say the least. I would love to see this work but with a standard car it is not practicle now. Maybe coupling to a Prius electric motor may work, but you would probably be better off using the motor to assist the gas engine instead.

Cons

 

[QUOTE=dsddcd,Apr 8 2009, 05:30 AM] Here is a very short list of the cons to say the least. I would love to see this work but with a standard car it is not practicle now. Maybe coupling to a Prius electric motor may work, but you would probably be better off using the motor to assist the gas engine instead.

Cons