need someone who knows a lot!

[Shawn C]

Hey, I am putting in my turbo as a school project,, so i have to right a stupid paper to go along with it. If u guys would help me I would be very appretiative! I just need a long dicription of a supercharger and a turbocharger,, and somthing that many people dont know about them... I already knwo a lot I just need a quote to put into my paper.. thanx

[juicy19]

Use the search function. There's so much info in these forums that you can use. Take about 10 minutes and you'll find what you're looking for.

[Shawn C]

Thanx

[Polygon]

A good site for a good explanation is How Stuff Works.

All you need to know is there.

[Shawn C]

Checked the search.... and already have stuff from how stuff works, its all good stuff but i just need a quote from someone about something dealing with superchargers and turbochargers.

[Reed]

you wont have a hard time finding something that most people dont know about a turbo

cause most people dont know shit about htem

[88_SC_CRX_Si]

Here is one.... Depending on the amount of boost, intake speeds can reach over the Speed of Sound. Due the amount of CFM that is getting moved through the system. Which does make sense, when you stop and think about.

[Hypsi87]

Originally Posted by 88_SC_CRX_Si

Here is one.... Depending on the amount of boost, intake speeds can reach over the Speed of Sound. Due the amount of CFM that is getting moved through the system. Which does make sense, when you stop and think about.

ahhh but a turbo does not increse the CFM your engine flows.... A turbo is a pressure multiplier, not a pressure adder. A turbocharger/supercharger increses air density(mass) besides air only moves in your intake when an intake vave is open. so air flow is always changing direction dependong on your firing order. no way that it reaches the speed of sound

[88_SC_CRX_Si]

Originally Posted by Hypsi87

ahhh but a turbo does not increse the CFM your engine flows.... A turbo is a pressure multiplier, not a pressure adder. A turbocharger/supercharger increses air density(mass) besides air only moves in your intake when an intake vave is open. so air flow is always changing direction dependong on your firing order. no way that it reaches the speed of sound

I will "try" and find the article/website I found it on....

[FDTT]

If you broke the spped of sound (760+mph on land) in your intake manifold the thing would explode. The pressure that would be generated would be so grate that the manifold would grenade.
The compressor blades on the other hand probably do brake the speed of sound. I mean, they revolve at over 20krpm.
The Apache attack choppers rotor blade (tips) can brake the sound barrier. Thats why they have the tear drop shape at the end of the blade. As to cause less turbulance when doing this.

[88_SC_CRX_Si]

Could not find the site nor am I a math nerd, sooooo don't use that until I can find out otherwise... hehehehe

Anyway, you peeps don't think intake speeds could be hitting that fast, in a Top Fuel/Funny Car pushing 6000+ hp...

Just curious....

[duplox]

Well, I figured the place air would be travelling the fastest would be the turbo compressor. Compressors can hit speeds of over 50,000rpm, but a normal turbo(50,000+ requires ceramic wheels, water cooling, improved bearings, etc) can only get to about 50k. Using a smallish 3" wheel, at the very edge it is travelling at 446.25mph. not too shabby, but not close to the speed of sound (761.2mph).. Using a little more math, we can figure out that it would take a 5.11" wheel for the very edge to hit the speed of sound.. not that huge of a wheel, but still pretty big.
I know guys who spin their 351c v8s(5.7L) to 9500rpm, which means that it takes .00315 second for the engine to intake 44.5 cubic inches of air. The intake runners are around 2" in diameter. That means in .00315sec the air moves 14" in the intake. That comes to a speed of 4430.38in/sec, or 251.72mph. Fast, but nowhere near the sound barrier.
I doubt air in the intake manifold hits the speed of sound. I'm skeptical that a normal 5+" wheel could hit 50,000rpm. I'm sure there are race engines out there that do it on a regular basis, which is why they're torn down after every race! Maybe you were reading about intake runner length tuning, because that is based on pressure waves bouncing off the back of the intake valve just after it closes and heading back up the intake runner at the speed of sound, hitting the plenum and reflecting back, and if your runner length is just right your intake valve will just be opening again as the pressure wave returns. But that isn't really that applicable with forced induction engines. Thats stuff for max hp/cu in naturally aspirated or NOS cars. It isn't concievable for a N/A car to have intake speeds near the speed of sound, because that would mean your intake manifold is extremely restricitve. If they're that restrictive, the engine wont be able to get to a speed that'll make the air move at 760mph.

[bigpun]

if your looking for someone who knows alot boy you found the wrong site. if you wanna know the technical definition of a blower---
now this is right out of the automotive dictionary
( something that blows air up your ass)

[88_SC_CRX_Si]

Originally Posted by duplox

Well, I figured the place air would be travelling the fastest would be the turbo compressor. Compressors can hit speeds of over 50,000rpm, but a normal turbo(50,000+ requires ceramic wheels, water cooling, improved bearings, etc) can only get to about 50k. Using a smallish 3" wheel, at the very edge it is travelling at 446.25mph. not too shabby, but not close to the speed of sound (761.2mph).. Using a little more math, we can figure out that it would take a 5.11" wheel for the very edge to hit the speed of sound.. not that huge of a wheel, but still pretty big.
I know guys who spin their 351c v8s(5.7L) to 9500rpm, which means that it takes .00315 second for the engine to intake 44.5 cubic inches of air. The intake runners are around 2" in diameter. That means in .00315sec the air moves 14" in the intake. That comes to a speed of 4430.38in/sec, or 251.72mph. Fast, but nowhere near the sound barrier.
I doubt air in the intake manifold hits the speed of sound. I'm skeptical that a normal 5+" wheel could hit 50,000rpm. I'm sure there are race engines out there that do it on a regular basis, which is why they're torn down after every race! Maybe you were reading about intake runner length tuning, because that is based on pressure waves bouncing off the back of the intake valve just after it closes and heading back up the intake runner at the speed of sound, hitting the plenum and reflecting back, and if your runner length is just right your intake valve will just be opening again as the pressure wave returns. But that isn't really that applicable with forced induction engines. Thats stuff for max hp/cu in naturally aspirated or NOS cars. It isn't concievable for a N/A car to have intake speeds near the speed of sound, because that would mean your intake manifold is extremely restricitve. If they're that restrictive, the engine wont be able to get to a speed that'll make the air move at 760mph.

You just proved that intake speeds can reach that fast...

Using a little more math, we can figure out that it would take a 5.11" wheel for the very edge to hit the speed of sound.. not that huge of a wheel, but still pretty big.

Thankyou for answering that Q for me....

[projectsilvia97]

Originally Posted by bigpun

if your looking for someone who knows alot boy you found the wrong site. if you wanna know the technical definition of a blower---
now this is right out of the automotive dictionary
( something that blows air up your ass)

what does this have to do with anything?