Electric turbo/super chargers

My cheap exhaust driven turbocharger does well enough, and doesnt require additional charging or more heavy batteries, thank you very much

Not convinced pfft !!!!!

Well if it's good enough for F1 i spose it can work on the street, however the same old recharge and storage problems will still limit it, 1 to 8 use and recharge cycle sounds good but i bet that's under ideal curcumstances and not real street tested, add in the extra battery/s and a larger alt (probably water cooled due to it's new duty cycle) and the extra cooling that will require from the cooling system and it all starts to get way more complicated than it first seems.

Turbo's make good use of the waste heat and flow in the exhaust gasses so nicely make use of this to compress the intake charge. Nice piece of thermo.

Genuine electric compressor would use a fair bit of energy from a battery but would be able to give you exactly the boost curve needed to give good power at all times.

To me, making use of an electric motor to spool the turbo when off boost, then letting the exhaust gasses drive it when the exhaust flow is high would be best of both worlds.

Intake temp wise a lot of this comes from the compression of the intake air, not transmitted heat from the compressor. You'd still need an intercooler etc.

Need to be a pretty powerful motor to spin the compressor at required turbo speeds.

Pages bookmarked for a proper read :-)

A fan is not a compressor. A fan moves a large volume of air at low pressure (as in leaf blower) where as a compressor moves a relatively small volume but increases the pressure across the device significantly.

This one is significantly different to the intake fan type kit.... its a 3kw motor for a start. Not saying its really any good in a practical sense though.

Turbo chargers are (relatively speaking) cheap systems for OEM's.

I'm sure they'd put a lot more interesting things on cars but people wont pay for them.

Just want to point out that Audi are even planning on doing something similar to there cars. So I'm guessing the idea must work at least, but it appears it might even be better than a normal turbo!
www.autocar.co.uk/car-review/audi/a5/first-drives/audi-rs5-v6-tdi-e-prototype-first-drive-review

My annoying two penneth,

How much power does a normal supercharger take from the engine in the form of its drive belt, in order to compress the air and shove it in the intake at whatever boost pressure it is running.

Now for an electric supercharger to give the same kind of boost that power needs to be converted from mechanical energy to electrical energy by the alternator, sent down wires, and then converted back to mechanical energy by the electric motor.

Unless its some sort of perpetual motion you cannot create or destroy energy only transform it into another form of energy.

I can imagine you would need a massive alternator, nice thick power cables and the kind of blower fan that you would see on an industrial air conditioning unit.

How about this for auxiliary driven superchargers.

Fell Locomotive

Had Four engines, each pair of engines was fed from a supercharger driven by a smaller auxiliary engine governed to give a constant flow rate to the engines.... that's 6 engines!!!

This didn't work very well either......