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Turbo Thermodynamics!

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Old Oct 19, 2007 | 02:52 PM
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Default Turbo Thermodynamics!

Ok so Ive taken a lilttle physics myself ..... but to all you tC geniuses out there I like you guys' opinions.......
QUESTION: What is the most properly sized compressor for the tC to effeciently compress air without putting more heat into the charge than thermo law says it should( I realize this aint gonna happen but close can), while moving the most cubic ft/ min air particles?....
ALSO: The most properly sized Turbine A/R ratio to reduce back pressure while still flowing exhaust gases at enough velocity to drive the turbine and not to small that it will show up as power lose in the upper rev range!
SO: With what numbers can I get a turbo with quick spool, with low restriction on the system exhaust wise and low charge temps.... while making good power for a street turbo....
Old Oct 19, 2007 | 03:47 PM
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i got a 39 on my physics regents.....lmao
Old Oct 19, 2007 | 03:51 PM
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i am so smart, i am so smart S-M-R-T........dooh

sorry, i couldnt help myself
Old Oct 19, 2007 | 11:52 PM
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thought u had a turbo........
Old Oct 20, 2007 | 04:04 AM
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Default Re: Turbo Thermodynamics!

Originally Posted by Bryan06tC
Ok so Ive taken a lilttle physics myself ..... but to all you tC geniuses out there I like you guys' opinions.......
QUESTION: What is the most properly sized compressor for the tC to effeciently compress air without putting more heat into the charge than thermo law says it should( I realize this aint gonna happen but close can), while moving the most cubic ft/ min air particles?....
ALSO: The most properly sized Turbine A/R ratio to reduce back pressure while still flowing exhaust gases at enough velocity to drive the turbine and not to small that it will show up as power lose in the upper rev range!
SO: With what numbers can I get a turbo with quick spool, with low restriction on the system exhaust wise and low charge temps.... while making good power for a street turbo....
The answer to your question and dilemma would be to use a......... VATN turbocharger (Variable Area Turbine Nozzle).

Compressor blades are dynamic and are small AR at start, once up to a point, the vanes changes angle to create a big bigger biggest AR for big power.

Hence NO lag from dig, NO backpressure up top, LOW charge temps, HUGE torque.

See, problem solved........ only issue is that there is no release of this bad ****** any time soon to the general public

Only one car in production has this honor.... the Porsche 997 Twin Turbo, compliments from BorgWarner.

Damn, I wish I was rich.
Old Oct 20, 2007 | 04:17 AM
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Default Re: Turbo Thermodynamics!

Sleepermod

Only one car in production has this honor.... the Porsche 997 Twin Turbo, compliments from BorgWarner.

Damn, I wish I was rich.
man..you and me both. One of these days I will have one...you've gotta keep the dream.
Old Oct 20, 2007 | 10:17 PM
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Wow see thats cool.... I really learned somthing.... and yes nebster I do have a turbo(t3 45 trim) and works well for my application.... I just learned alot in the process of Turbocharging my vehicle and I wanted to see if anyone had advice on how to create the above mentioned ideal turbocharger
Old Oct 20, 2007 | 11:00 PM
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wow I i know i've read about VATN somewhere, i think its maximum boost.. its really cool stuff
Old Oct 20, 2007 | 11:08 PM
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Here this might help

https://www.scionlife.com/forums/vie...522&highlight=
Old Oct 20, 2007 | 11:12 PM
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Default Re: Turbo Thermodynamics!

Originally Posted by sleepermod
Only one car in production has this honor.... the Porsche 997 Twin Turbo, compliments from BorgWarner.

Damn, I wish I was rich.
no there have been other cars that have had "variable" turbos. It's been in the diesel world for years
Old Oct 21, 2007 | 02:50 AM
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Default Re: Turbo Thermodynamics!

Originally Posted by Butane
Originally Posted by sleepermod
Only one car in production has this honor.... the Porsche 997 Twin Turbo, compliments from BorgWarner.

Damn, I wish I was rich.
no there have been other cars that have had "variable" turbos. It's been in the diesel world for years
Yes, Butane. That is true, they have been around for diesel for a long time but none on a production car. Why? Its because automotive engineers never did get around the issue of heat management of the variable vanes.

Diesel would generally top out at 950F hot side but a regular gas driven car starts at 1000F topping out at est. 1800F. Double the heat.

BorgWarner got around the issue for the 997 by using ceramic coated vanes + coatings for hot side compressor as well.

Porsche had the budget to do this

Maybe Garrett or Turbonetics should revisit this area and perhaps acquire the license to produce their own range of VATN turbos using BW/Porsche technology?

They would make good biz sense to them and a new toy for us!
Old Oct 21, 2007 | 07:29 PM
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Default Re: Turbo Thermodynamics!

Originally Posted by sleepermod
Originally Posted by Butane
Originally Posted by sleepermod
Only one car in production has this honor.... the Porsche 997 Twin Turbo, compliments from BorgWarner.

Damn, I wish I was rich.
no there have been other cars that have had "variable" turbos. It's been in the diesel world for years
Yes, Butane. That is true, they have been around for diesel for a long time but none on a production car. Why? Its because automotive engineers never did get around the issue of heat management of the variable vanes.

Diesel would generally top out at 950F hot side but a regular gas driven car starts at 1000F topping out at est. 1800F. Double the heat.

BorgWarner got around the issue for the 997 by using ceramic coated vanes + coatings for hot side compressor as well.

Porsche had the budget to do this

Maybe Garrett or Turbonetics should revisit this area and perhaps acquire the license to produce their own range of VATN turbos using BW/Porsche technology?

They would make good biz sense to them and a new toy for us!
You got a link for that information, not that I don't believe you, I just wanna read more about the technology!
Old Oct 21, 2007 | 11:19 PM
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VTAN is crazy expencive to make, probably why those turbo companies don't want to make them
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