911 variable turbine geometry
Feb 13, 2006, 03:05 PM
#1
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911 variable turbine geometry
Have you guys read about this? I watched the little video on it on the site and it looks pretty cool. Not sure if i completely understand it. But im pretty sure iv never seen a turbo with this before (not that iv really seen alot). If you know what im talking about go to the Porsche site and look at the new 911 turbo. I think it looks amazing and it sounds like its gonna preform bad ***. But i read that its sposed to be kinda refined and luxury more than performance, they said that the turbo S and the GT2 would be the hardcore performers.
Feb 13, 2006, 06:05 PM
#3
I comment on the same topic a few weeks ago. In Europe this technology has been in use routinely for 15 years in many car makers.
It is just amazing how a turbo can be maximize with lighting spool up and monstruous high boost by having variable blades. Unfortunately the turbo era was almost stinghished in the mid 80 in the USA, thanks good it is back.
It is just amazing how a turbo can be maximize with lighting spool up and monstruous high boost by having variable blades. Unfortunately the turbo era was almost stinghished in the mid 80 in the USA, thanks good it is back.
Feb 13, 2006, 06:41 PM
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Variable nozzle turbos have been used for quite a while in the diesel market, but until recently the EGT's were too high on petrol applications for the system to prove reliable. It appears obviously that they have solved that issue.
Feb 13, 2006, 07:02 PM
#7
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Thumbs up to porsche.They are always first at pioneering new technology into production vehicles , First with a production turbocharged car, first fully ceramic/kevlar clutch, ceramic brakes, and now VTG, even though chrysler tried it in the 80's on a few hundred of their VNT turbo cars but had pretty much a 100% failure rate. in fact I would like to see a chrysler VNT turbo that actually still works, and hasnt siezed.
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Feb 13, 2006, 07:16 PM
#8
Originally Posted by Evilution VIII
Thumbs up to porsche.They are always first at pioneering new technology into production vehicles , First with a production turbocharged car, first fully ceramic/kevlar clutch, ceramic brakes, and now VTG, even though chrysler tried it in the 80's on a few hundred of their VNT turbo cars but had pretty much a 100% failure rate. in fact I would like to see a chrysler VNT turbo that actually still works, and hasnt siezed.
http://www.bmwworld.com/models/newclass/2002_turbo.htm
I give myself only 50% credit since I did not know the excat year but definately the BMW was 2 years ahead of Porsche for their first turbo production car .
BMW launched the 2002 TI Turbo in July 1973.
Last edited by fromWRXtoEVO; Feb 13, 2006 at 07:21 PM.
Feb 13, 2006, 09:08 PM
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Originally Posted by fromWRXtoEVO
I did not want to copy and paste this link but since I was only 99.99% sure I ended having to verify that also BMW 2002TI was perhaps a earlier turbo production car than Porsche.
http://www.bmwworld.com/models/newclass/2002_turbo.htm
I give myself only 50% credit since I did not know the excat year but definately the BMW was 2 years ahead of Porsche for their first turbo production car .
BMW launched the 2002 TI Turbo in July 1973.
http://www.bmwworld.com/models/newclass/2002_turbo.htm
I give myself only 50% credit since I did not know the excat year but definately the BMW was 2 years ahead of Porsche for their first turbo production car .
BMW launched the 2002 TI Turbo in July 1973.
Apr 30, 2006, 05:12 AM
#12
Originally Posted by Precision Dyno
We have a little project with this in the works...
http://www.m5board.com/articles/geneva2006/DSC05251.jpg
Apr 30, 2006, 02:01 PM
#13
http://www.porsche.com/all/masterwerk/usa.aspx
That's Porsche's 911 turbo page. Launch the high bandwidth version, skip the history, and VGT (VTG to porsche) is in Act 1.
Variable geometry turbine technology is not new, it's been used on diesel trucks and cars for at least 5 or 6 years now. Holset designed and patented it, and Cummins (who owns Holset) was the first to use it. VGT is used on pretty much every diesel truck engine now.
That's Porsche's 911 turbo page. Launch the high bandwidth version, skip the history, and VGT (VTG to porsche) is in Act 1.
Variable geometry turbine technology is not new, it's been used on diesel trucks and cars for at least 5 or 6 years now. Holset designed and patented it, and Cummins (who owns Holset) was the first to use it. VGT is used on pretty much every diesel truck engine now.
Apr 30, 2006, 02:14 PM
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The Turbo on the 911 is made by Borg Warner. I actually called them to learn more about it.
After speaking with them at length, I don't believe it would add a lot to an Evo.
You need a control module control the vains & they didn't believe this would be something available in aftermarket.
Also, this turbo does not have a ball bearing center, so a ultimately a Garrett with a BB center could spool faster without the VNT......
After speaking with them at length, I don't believe it would add a lot to an Evo.
You need a control module control the vains & they didn't believe this would be something available in aftermarket.
Also, this turbo does not have a ball bearing center, so a ultimately a Garrett with a BB center could spool faster without the VNT......
Apr 30, 2006, 02:21 PM
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Here's some notes of VTG from my mechanical engineering class.
If you want to see a really wicked forced induction design, take a look at a Comprex wave Supercharger
If you want to see a really wicked forced induction design, take a look at a Comprex wave Supercharger
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