Comments on: How does Variable Turbine Geometry work? http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/ Paul Tan on the Automotive Industry Sun, 22 Nov 2009 11:00:44 +0800 http://wordpress.org/?v=2.8.6 hourly 1 By: BALAJI http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-256612 BALAJI Sun, 23 Aug 2009 12:10:44 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-256612 U can include some animation figures that shows how this vanes work...... U can include some animation figures that shows how this vanes work……

]]> By: PNH http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-227510 PNH Mon, 06 Apr 2009 19:37:05 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-227510 Excellent staightforward explaination even for an absolute novice to turbocharger technology. Excellent staightforward explaination even for an absolute novice to turbocharger technology.

]]> By: Abhijit Sengupta http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-218943 Abhijit Sengupta Mon, 09 Mar 2009 14:59:13 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-218943 Wow! That's a real-time, concise even fully-functionally-described piece of work. Thanks a ton, Paul Wow! That’s a real-time, concise even fully-functionally-described piece of work.

Thanks a ton, Paul

]]> By: bharat http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-216176 bharat Sat, 28 Feb 2009 07:06:31 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-216176 this technology rocks dude!!!!!! can i get technical papers on vtg and r2s systems? this technology rocks dude!!!!!! can i get technical papers on vtg and r2s systems?

]]> By: yovitadiah http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-81138 yovitadiah Mon, 09 Apr 2007 04:44:11 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-81138 I wonder if Twincharger is made of; Combining Supercharger and Turbocharger by cuopling them with FREEWHEEL gear transmision. It is like a bicycle, in low RPM, power is get from pedal (SC). But when riding down hill, when wheel is faster, the pedal can be free. So asume wheel is a TC, it powered wihout drag from SC anymore to the engine. Is it going to work? http://yovitadiah.bravehost.com/TWINCHARGER_FREEWHEEL.jpg I wonder if Twincharger is made of; Combining Supercharger and Turbocharger by cuopling them with FREEWHEEL gear transmision. It is like a bicycle, in low RPM, power is get from pedal (SC). But when riding down hill, when wheel is faster, the pedal can be free. So asume wheel is a TC, it powered wihout drag from SC anymore to the engine. Is it going to work?
http://yovitadiah.bravehost.com/TWINCHARGER_FREEWHEEL.jpg

]]> By: New Ford Ranger with 5-speed auto in Thailand http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-57340 New Ford Ranger with 5-speed auto in Thailand Wed, 06 Dec 2006 07:21:29 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-57340 [...] The 2.5 liter Duratorq engine is a DOHC 16-valve turbodiesel unit, featuring Bosch common rail direct fuel injection and a variable geometry turbocharger. It makes 141hp and 330Nm of torque, up from the current Ranger available in our market’s 2.5 liter SOHC indirect injection turbodiesel which makes 121hp and 262Nm of torque. [...] [...] The 2.5 liter Duratorq engine is a DOHC 16-valve turbodiesel unit, featuring Bosch common rail direct fuel injection and a variable geometry turbocharger. It makes 141hp and 330Nm of torque, up from the current Ranger available in our market’s 2.5 liter SOHC indirect injection turbodiesel which makes 121hp and 262Nm of torque. [...]

]]> By: 2006 Paris Motor Show: 2007 Kia Magentis http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-52821 2006 Paris Motor Show: 2007 Kia Magentis Sun, 08 Oct 2006 08:28:24 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-52821 [...] This particular model shown is a turbodiesel model, which can be identified by the CRDi badge on the boot - a 2.0 liter CRDi with a Variable Geometry Turbocharger, similiar to the one found in the Porsche 911 Turbo. Of course, VGT has been around in turbodiesels for quite some time already. Performance stats are 138hp at 4,000rpm and 305Nm of torque between 1,800rpm to 2,500rpm. The turbodiesel is also equipped with a Diesel Particulate Filter for better emissions. If you prefer petrol, the UK market has a 2.0 I4 CVVT and 2.7 liter V6, but in other markets there is also a 2.4 liter I4 CVVT. [...] [...] This particular model shown is a turbodiesel model, which can be identified by the CRDi badge on the boot – a 2.0 liter CRDi with a Variable Geometry Turbocharger, similiar to the one found in the Porsche 911 Turbo. Of course, VGT has been around in turbodiesels for quite some time already. Performance stats are 138hp at 4,000rpm and 305Nm of torque between 1,800rpm to 2,500rpm. The turbodiesel is also equipped with a Diesel Particulate Filter for better emissions. If you prefer petrol, the UK market has a 2.0 I4 CVVT and 2.7 liter V6, but in other markets there is also a 2.4 liter I4 CVVT. [...]

]]> By: 2007 Porsche 911 Turbo (997) http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47554 2007 Porsche 911 Turbo (997) Sun, 20 Aug 2006 17:11:00 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47554 [...] The new Porsche 997 Turbo’s main highlight is the new engine that comes with Variable Turbine Geometry. The 3.6 liter flat-6 engine is twin turbocharged with two VGT turbines on each bank of cylinders, as well as two intercoolers. The result is 480hp at at 6,000rpm and 620Nm of torque between 1,950rpm to 5,000rpm. Fantastic torque curve. For more information on how VGT works, check out my previous blog post “How Does Variable Turbine Geometry work?” [...] [...] The new Porsche 997 Turbo’s main highlight is the new engine that comes with Variable Turbine Geometry. The 3.6 liter flat-6 engine is twin turbocharged with two VGT turbines on each bank of cylinders, as well as two intercoolers. The result is 480hp at at 6,000rpm and 620Nm of torque between 1,950rpm to 5,000rpm. Fantastic torque curve. For more information on how VGT works, check out my previous blog post “How Does Variable Turbine Geometry work?” [...]

]]> By: neurra http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47393 neurra Fri, 18 Aug 2006 18:19:20 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47393 "VTG, VNT, VATN are all the same thing like how VVTi, Vanos, CVTC, DVVT or whatever you want to call it." - u wanna rectify ur phrase or sumthin? variable valve timing and variable turbo are totally different parts.. btw paul, this is an essential info to me.. thanx a lot.. wanted to know how it works since the 911 debut.. “VTG, VNT, VATN are all the same thing like how VVTi, Vanos, CVTC, DVVT or whatever you want to call it.”
- u wanna rectify ur phrase or sumthin? variable valve timing and variable turbo are totally different parts..

btw paul, this is an essential info to me.. thanx a lot.. wanted to know how it works since the 911 debut..

]]> By: szw http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47227 szw Thu, 17 Aug 2006 13:10:46 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47227 sorento ? fuyo , da koreans is tryin sth new long time ago . sorento ?
fuyo , da koreans is tryin sth new long time ago .

]]> By: sarawakguy http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47212 sarawakguy Thu, 17 Aug 2006 12:27:04 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47212 I cant just imagine if I can just fix one of this tech into my sisters Kancils... I cant just imagine if I can just fix one of this tech into my sisters Kancils…

]]> By: racelogic http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47206 racelogic Thu, 17 Aug 2006 12:09:56 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47206 Chysler has used VNT [variable nozzle technology] turbo in th 90s. Porsche is not the first. Germans talk crap. VW is showing off everyone that they made a supercharged turbo engine for their polo but in fact Nissan did that in 1989 in their Nissan March using K10 engine. VTG, VNT, VATN are all the same thing like how VVTi, Vanos, CVTC, DVVT or whatever you want to call it. Chysler has used VNT [variable nozzle technology] turbo in th 90s. Porsche is not the first.

Germans talk crap. VW is showing off everyone that they made a supercharged turbo engine for their polo but in fact Nissan did that in 1989 in their Nissan March using K10 engine.

VTG, VNT, VATN are all the same thing like how VVTi, Vanos, CVTC, DVVT or whatever you want to call it.

]]> By: Paul Tan http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47173 Paul Tan Thu, 17 Aug 2006 07:16:18 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47173 SatriaGuy: actually VTG has been on turbodiesels since the 1990s, the Sorento VTG is a turbodiesel. this is the first VTG on a mass production petrol car. there has been VTG petrol powered cars before this, but in limited runs like 500 units. SatriaGuy: actually VTG has been on turbodiesels since the 1990s, the Sorento VTG is a turbodiesel. this is the first VTG on a mass production petrol car.

there has been VTG petrol powered cars before this, but in limited runs like 500 units.

]]> By: SatriaGuy http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47170 SatriaGuy Thu, 17 Aug 2006 06:51:17 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47170 VTG technology debuts in the new 911 Turbo. Wonder where you get link to such info Paul? Anyway, its great of you to illustrate what Porsche(or Borgwarner) have done to the turbocharger. If you look at how it works, it is actually almost commonsense way to wring out more energy from the turbocharger and in fact it has been used for some time now in aerospace but only now Porsche has managed to introduce it in the 911. So, no, I don't think it is present in any other car, particularly in a Sorento! VTG technology debuts in the new 911 Turbo. Wonder where you get link to such info Paul?

Anyway, its great of you to illustrate what Porsche(or Borgwarner) have done to the turbocharger. If you look at how it works, it is actually almost commonsense way to wring out more energy from the turbocharger and in fact it has been used for some time now in aerospace but only now Porsche has managed to introduce it in the 911.

So, no, I don’t think it is present in any other car, particularly in a Sorento!

]]> By: szw http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47165 szw Thu, 17 Aug 2006 05:44:34 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47165 icic icic

]]> By: waimak http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47150 waimak Thu, 17 Aug 2006 02:30:55 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47150 great info Paul! great info Paul!

]]> By: tbcheese http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47125 tbcheese Wed, 16 Aug 2006 18:10:10 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47125 Oh looks like I made a mistake about the gas recirculation. nvm that. Paul it seems that the excess boost is controlled by the vanes. My guess is that once the engine speed drops the vanes are kept wide open so the turbine spins more slowly. Then the vanes close base to assume low rpm profile. http://www.f1technical.net/forum/viewtopic.php?p=22873 there's a nice gif animation of vtg in action here. Oh looks like I made a mistake about the gas recirculation. nvm that.

Paul it seems that the excess boost is controlled by the vanes. My guess is that once the engine speed drops the vanes are kept wide open so the turbine spins more slowly. Then the vanes close base to assume low rpm profile.

http://www.f1technical.net/forum/viewtopic.php?p=22873

there’s a nice gif animation of vtg in action here.

]]> By: Paul Tan http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47121 Paul Tan Wed, 16 Aug 2006 17:10:37 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47121 hi guys, I have edited my post to remove the wastegate info until i can double confirm how boost is controlled without a wastegate. hi guys, I have edited my post to remove the wastegate info until i can double confirm how boost is controlled without a wastegate.

]]> By: darylchan http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47120 darylchan Wed, 16 Aug 2006 17:09:44 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47120 Hi Paul + guys. This is my first comment on here. If i may add, Paul you wrote: "If you notice, some of the exhaust gas does on hit the turbine blades, instead exits through the left side of the turbine. This is where all the excess exhaust pressure goes, effectively eliminating the need for a wastegate." To my understanding, in the illustration the gas that does not hit the turbine blades merely goes around and comes round the other side. Remember that gasses are hitting the turbine blades at all 360 degrees. Looking at the cutaway, the only way for exhaust gasses to exit the system is through the turbine blades, therefore for proper boost control, there seems to be the need for an external wastegate. Please correct me if I'm wrong. Hi Paul + guys. This is my first comment on here.

If i may add, Paul you wrote:
“If you notice, some of the exhaust gas does on hit the turbine blades, instead exits through the left side of the turbine. This is where all the excess exhaust pressure goes, effectively eliminating the need for a wastegate.”

To my understanding, in the illustration the gas that does not hit the turbine blades merely goes around and comes round the other side. Remember that gasses are hitting the turbine blades at all 360 degrees.

Looking at the cutaway, the only way for exhaust gasses to exit the system is through the turbine blades, therefore for proper boost control, there seems to be the need for an external wastegate.

Please correct me if I’m wrong.

]]> By: Chapree Da Grande http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47118 Chapree Da Grande Wed, 16 Aug 2006 14:24:32 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47118 Must be very very very expensive due to the space technology material. Must be very very very expensive due to the space technology material.

]]> By: xXx http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47115 xXx Wed, 16 Aug 2006 13:05:40 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47115 And if i'm not mistaken also those little vanes from the VGT has some sort of ceramic coating. These dudes are mental...... And if i’m not mistaken also those little vanes from the VGT has some sort of ceramic coating.
These dudes are mental……

]]> By: xXx http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47114 xXx Wed, 16 Aug 2006 13:02:25 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47114 Thanks a lot for that! Really illumating, that was. This is really ONE awesome turbocharger...no wonder the 997 Turbo's a real cracker. Long live forced-induction!! Thanks again Paul!! Thanks a lot for that! Really illumating, that was. This is really ONE awesome turbocharger…no wonder the 997 Turbo’s a real cracker.
Long live forced-induction!!
Thanks again Paul!!

]]> By: ingolstadt http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47112 ingolstadt Wed, 16 Aug 2006 12:42:08 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47112 May i know..... is it a fix status thingy whereby mechanically linked up, the angles will ONLY vary according to speed/acceleration/exhaust volume OR, it is actually constantly variable through the implementation of an ECU that actually calculates information then calculates the angles needed? May i know….. is it a fix status thingy whereby mechanically linked up, the angles will ONLY vary according to speed/acceleration/exhaust volume OR, it is actually constantly variable through the implementation of an ECU that actually calculates information then calculates the angles needed?

]]> By: rexis http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47108 rexis Wed, 16 Aug 2006 11:59:04 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47108 Now this is the way to explain a technology. Indeed really sexy mechanical beauty, and innovative. Now this is the way to explain a technology.

Indeed really sexy mechanical beauty, and innovative.

]]> By: aesthari http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47103 aesthari Wed, 16 Aug 2006 10:42:48 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47103 Very informative; now i know of another method car makers use to eliminate turbo-lag, thanks! Very informative; now i know of another method car makers use to eliminate turbo-lag, thanks!

]]> By: albagmane http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47102 albagmane Wed, 16 Aug 2006 10:38:02 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47102 i wonder can apply this technology into an evo.. sure stunning! i wonder can apply this technology into an evo.. sure stunning!

]]> By: pirate http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47098 pirate Wed, 16 Aug 2006 09:58:44 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47098 Great and well-researched feature there, Paul! I read somewhere that the facelift Sorento got VTG too and an increase of about 20bhp - with better FC at the same time! The beauty of high tech advancement! Great and well-researched feature there, Paul!
I read somewhere that the facelift Sorento got VTG too and an increase of about 20bhp – with better FC at the same time!

The beauty of high tech advancement!

]]> By: DAN http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47097 DAN Wed, 16 Aug 2006 09:57:32 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47097 here come the technology's. best for Paul!. here come the technology’s.

best for Paul!.

]]> By: tbcheese http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47090 tbcheese Wed, 16 Aug 2006 08:55:21 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47090 In the cutout diagrams, does that mean that exhaust gas is recirculated into the combustion chamber? In the cutout diagrams, does that mean that exhaust gas is recirculated into the combustion chamber?

]]> By: redragon http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47089 redragon Wed, 16 Aug 2006 08:50:48 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-47089 does BorgWarner manufacture DSG gearbox as well ? Paul, thanks for sharing all these knowledge. does BorgWarner manufacture DSG gearbox as well ? Paul, thanks for sharing all these knowledge.

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