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Old 20-09-2006   #1
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Question What is a turbo !!! Or is it rather a Supercharger ??

Friends I have a doubt for the turbo people

I am a B.E Holder in Mechanical engg, and we used to learn a turbo is for diesel engines which runs on the crank end and transfers the exhaust gases to the inlet of the engine so that less engine effort is required to heat the air inside the cylinder !! And a super chargesr is something which is used in a petrol engine and does something similar (not able to memorize now) can anyone pls explain ????

Ad if this is right , then why the petrol uno is " UT "??
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Old 20-09-2006   #2
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Arrow Re: What is a turbo !!! Or is it rather a Supercharger ??

No mate a turbo uses exhaust gases to spin the turbo up, this causes air to be sucked through the turbo and into the inlet manifold. much quicker than just a ordinary car sucking air in because the turbo forces the air in the manifold...
A super charger is two rollers that run close together and is driven by a belt, when ur driving along the charger is sucking air into the engine and through the inlet into the engine..
A super charger is known to be quicker but because its belt driven there is a constant lag on the engine so say a charger gains 50 bhp around 7 - 8 hp is lost through driving the charger..
Ill put some more info up later as im late for work and im trying to rush
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Old 20-09-2006   #3
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Re: What is a turbo !!! Or is it rather a Supercharger ??

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Old 20-09-2006   #4
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Re: What is a turbo !!! Or is it rather a Supercharger ??

Ive done 1st dipoma in mechanical engineering and just finished National diploma in motorsport engineering
Lol

A crank driven turbo my bombay friend?
1st ive ever heard of it on deisel but i can see the point being a deisel, but isnt that taking away efficiency to the diesel process if its forcing exhaust gases into a fresh charge?

Turbo - Driven by exhaust gases and they fooking rule!

Poopercharger - Driven by a belt that is driven by the crankshaft
They can come in diffrent styles such as:

EATON (Two screw type),

G-ladda (Some **** french design that the germans took on, two snail like shapes with one turning inside the other)

The last being the turbo looking type (I call it a belt driven turbo!! yes it has lead to many a argument )

Turbo technology has matched pooperchargers now easily anyway
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Last edited by Biz; 20-09-2006 at 12:51.
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Old 20-09-2006   #5
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Re: What is a turbo !!! Or is it rather a Supercharger ??

This post is funny! I gotta add ma comments too! LOL

Well a turbo runs on pressurized water running through the cooling system....

While a super charger runs on pressurized oil....

LMAO

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Old 20-09-2006   #6
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Re: What is a turbo !!! Or is it rather a Supercharger ??

Quote Originally Posted by osiraj
This post is funny! I gotta add ma comments too! LOL

Well a turbo runs on pressurized water running through the cooling system....

While a super charger runs on pressurized oil....

LMAO

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What the hell u goin on about runz on pressurized water.. what a spanner..
U aint got a clue av ya
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Old 20-09-2006   #7
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Question Re: What is a turbo !!! Or is it rather a Supercharger ??

well !!

I recon i am wrong,,Turbos indeed are driven by the exhaust gases..(BAD Memory!!) and superchargers are driven by the engine...but nobody in my country ( not all though-- ppl i know--includes professors/mechanics/other engg.friends etc) never heard of turbo petrol engine !!!..why one need to feed hot air into the inlet of a petrol engine ?? what would be the performance boost as the petrol engine is a spark ignited one ??(purely my thoughts--chances are they are utter foolishness) pls somebody bother to explain ??

And, i havent seen any petrol turbos in my country, but lots of diesel trubos around..even the buses and trucks have them!!..
Biz: well to cool the gases down--that's what an intercooler is for right ??
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Old 20-09-2006   #8
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Re: What is a turbo !!! Or is it rather a Supercharger ??

Quote Originally Posted by premrajeev
well !!

I recon i am wrong,,Turbos indeed are driven by the exhaust gases..(BAD Memory!!) and superchargers are driven by the engine...but nobody in my country ( not all though-- ppl i know--includes professors/mechanics/other engg.friends etc) never heard of turbo petrol engine !!!..why one need to feed hot air into the inlet of a petrol engine ?? what would be the performance boost as the petrol engine is a spark ignited one ??(purely my thoughts--chances are they are utter foolishness) pls somebody bother to explain ??

And, i havent seen any petrol turbos in my country, but lots of diesel trubos around..even the buses and trucks have them!!..
Biz: well to cool the gases down--that's what an intercooler is for right ??
Well you dont feed hot air into the engine because you have a intercooler that lowers the temp of air going into your engine, air is forced into the engine ( quick power ) and makes the engine rev faster thus making it go faster....
Come on mate surley you know all this, turbos have been strapped on cars for years every body knows you cant beet the power and thrill of a turbo..
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Old 20-09-2006   #9
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Re: What is a turbo !!! Or is it rather a Supercharger ??

The Turbo compresses the air making denser and therefore producing more power. As someone put it to me the engine is like a big lung, more air is better and this is what the Turbo does. A typical non Turbo 1.4 Uno would develop about 70bhp, with Turbo this rises to about 120bhp a significant performance increase. In the case of the Uno Turbo it is very much a performance modification and makes the car a serious hot hatch. I suspect in countrys like India Turbo petrol engines are less common due to the increased complexity, higher maintenance and due to cost.
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Old 20-09-2006   #10
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Re: What is a turbo !!! Or is it rather a Supercharger ??

I've been to India a few times, my mums actually from bombay And it would be no point in having a Turbo there because nobody drives on the right side of the road or follows traffic signals or sticks to speed limits either!!!!! lol
Turbo engined cars would be pointless over there as the country is pretty economical about things mostly due to the amount of pollution, the government encourages recycling, they can pretty much recycle any thing over there and have even developed some of the best Gas and electric cars available in the world today which are more economical to run, cleaner and cheaper to buy.

Prem this site explains how turbo chargers work

http://auto.howstuffworks.com/turbo.htm

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Last edited by F R O S T Y; 20-09-2006 at 21:54.
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Old 20-09-2006   #11
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Re: What is a turbo !!! Or is it rather a Supercharger ??

Yeah I spent 4 weeks in India a few years ago touring and camping on a bus. Started in Nepal and headed down into India. Great country, one of the few places I've been I would like to go back to.....but an Uno Turbo would fall apart in days out there.
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Old 20-09-2006   #12
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Re: What is a turbo !!! Or is it rather a Supercharger ??

Quote Originally Posted by premrajeev
well !!

I recon i am wrong,,Turbos indeed are driven by the exhaust gases..(BAD Memory!!) and superchargers are driven by the engine...but nobody in my country ( not all though-- ppl i know--includes professors/mechanics/other engg.friends etc) never heard of turbo petrol engine !!!..why one need to feed hot air into the inlet of a petrol engine ?? what would be the performance boost as the petrol engine is a spark ignited one ??(purely my thoughts--chances are they are utter foolishness) pls somebody bother to explain ??

And, i havent seen any petrol turbos in my country, but lots of diesel trubos around..even the buses and trucks have them!!..
Biz: well to cool the gases down--that's what an intercooler is for right ??
I'm not sure that after skimming through this thread it been made clear to you that the exhaust gases only spin the turbo and the other side of the turbo draws new, fresh, cold air in. The exhaust gases still leave through the exaust! No gas can pass between the two sides of the turbo ie mix, its got hot air in the turbine and cold air in the compressor. Got to ''howstuffworks'' and look up turbocharger!

Tom
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Old 21-09-2006   #13
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Re: What is a turbo !!! Or is it rather a Supercharger ??

Quote Originally Posted by Rob-mint-mk1-uno
What the hell u goin on about runz on pressurized water.. what a spanner..
U aint got a clue av ya
Common fellows that was only in humour... no pressurized water nor pressurized oil. LMAO --> Laugh ma ass off.

Well Tom has already explained the turbine and compressor in a turbo. You are right about increase in temperature of air being fed into the engine cuz the compressor end of turbo does gets hot since the turbine end is constantly being driven by hot exhaust gases. Hot air has less oxygen content so to improve efficiency intercooler (more like a radiator) is connected between the compressor and engine intake to bring down temperature of compressed air being fed into the engine. In some cases efficiency is improved up to 30% in terms of horse power with proper fuel management.

U may look up terms such as Turbo Spool, Hybrid Turbo, Blow Off Valves, Turbo Boost, Waste Gates, Turbo Timer, Vacuum / Boost Gauge, Boost Controllers, Turbo Exhaust Manifold, Intercooler etc at google or anyother good search engine to improve your knowledge about turbos and their operation.


Rgds.

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Last edited by osiraj; 21-09-2006 at 07:56.
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Old 21-09-2006   #14
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Re: What is a turbo !!! Or is it rather a Supercharger ??

Tom !!
Thanks for your point..That clarifies my doubts..well..it seems turbos are a little more compex so i'm in for an indepth study of it...thanks 4 all...
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Old 21-09-2006   #15
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Re: What is a turbo !!! Or is it rather a Supercharger ??

No worries.

I read through your post and the ones left for you and thought to myself; hang on i swear he thinks the exhaust gases are being fed back in! lol

Glad we could help..

Tom
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