Electric Turbo ??

Mod_Man

Hey

Has anyone tried one of those electric turbos.. Any use ?

like this one...
http://cgi.ebay.ie/ws/eBayISAPI.dll?ViewItem&item=8047025897

Thomas_S_Hunterson

doesn't it have to be powered by the exhaust to be a turbo, its a supercharger surely

Mod_Man

I knew someone would pick up on that yes its an electric powered supercharger..

sean_keevey wrote:

doesn't it have to be powered by the exhaust to be a turbo, its a supercharger surely

5500

Stay well away from them,there leaf blower motors!If a car could be super or turbocharged for 100quid everyone would do it!

Adding one would also have the same effect as you putting your mouth onto the airfilter,and blowing into it!

Mod_Man

I guess the aim of any turbo/supercharger is to get more oxegen into the engine to aid combustion. So there just air compressors ?? Are there any products out there that are battery powered that work.. I know it takes quite a bit of Horse power to work a chain driven super charger, but could a small air compressor build up the required pressure over time and give a temporary boost?

eireal wrote:

Stay well away from them,there leaf blower motors!If a car could be super or turbocharged for 100quid everyone would do it!

Adding one would also have the same effect as you putting your mouth onto the airfilter,and blowing into it!

5500

Tbh i dont think so from a 12v source anyways.

Ebay is full of "electric" superchargers but none have any dyno proof to back up there Hp gain claims,there as bad as the superchip resistors!

In saying that ive seen a video online of a civic on a dyno with a leafblower put up to the intake and its gained Hp from the run,ill post the link if i can find it

JohnCleary

Those things will actualy slow your car down, as theyll restrict air getting into your engine.

Think about it, how much air can those tiny fans displace in a minute?
Now think about the capacity of your cylinders. Now think about how many times your cylinder will turn in a minute (Anything upto 7k RPM). Now think about hwo much air your engine will use in a minute...

Without even doign the maths, you can see its a load of c0ck

Whiskeytango

Here is some information that might help.
There is no such thing as a free lunch or perpetual motion. Even if a strong enough electric motor were available that was capable of spinning the blower under boost at high rpm, the electric current needed to drive the motor has to come from somewhere-namely the vehicle's charging system, an engine driven alternator. What is often forgotten is that every time energy changes state-in this case from mechanical (engine) to electrical (drive motor via the alternator) efficiency is lost in the form of heat. Electric motors are not even 50% efficient. This causes not only size and weight problems with really large electric motors, but it also wastes more engine power to drive a large electric motor that in turn drives a supercharger than if the same blower is driven directly by the engine.
The Blower Shop (a supercharger performance specialist) has a blower test stand to run-in and qualify it's blowers before they're shipped to customers. A 300 lb. electric motor is used to spin the blowers via belts and pulleys as high as 6000 rpm. The operating voltage for the motor is 230 VAC and is rated at 15 h.p. Although no electric motor or alternator can sustain it's max. rated output at a 100% continuous duty cycle, for purposes of comparison let's assume the motor would run OK at a constant 15 hp. It takes over 150 hp to spin a Top Fuel blower making 40-50 lbs of boost, so in theory 15 hp might be sufficient to spin the compressor fast enough to generate 6-7 lbs. of boost (at best) in a street car. The cars I deal with use a 14 volt system, not a 230 VAC set up as on the test stand. What would be the theoretical requirements for an equivalent 15 hp motor operating at 14 volts? Wattage is a standard measurement of electric power and is also how horsepower is expressed in the SI system. One horsepower = 745.7 watts, so 15 horsepower * 745.7 = 11,185.5 watts. The formula used to calculate the power output in electrical devices is volts *(times) amps = watts. If the voltage is known, we can determine how many amps are needed to produce the necessary wattage: watts/volts=amps. If you had 230 volts, in theory the required amperage would be 11,185.5 watts/230 volts = 48.6 amps. If you have only 14volts the required amperage would be 11,185.5 watts/14 volts = 799 amps. Because alternators can only produce their max output for only a few seconds without burning up, it would take about a 2000 amp alternator to supply sufficient current to continuously operate the motor. But of course the motor must have a safety margin because it can't run continuously at it's max output, which in turn means an even larger alternator still. As for size, just imagine the size and weight of a 2000 amp alternator!
So the bottom line about those $70.00 turbochargers you see on ebay, don't waste your money.

Russ.

colm_mcm

that motor would restrict the airflow at high speeds. stay well away.