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 Tue, 14 Feb 2012 17:59:11 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: shalu janardhan http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-488719 shalu janardhan Thu, 02 Jun 2011 10:19:40 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-488719 Wonderful explanation of VGT......I have never see such detailed explanation...thanks:) Wonderful explanation of VGT……I have never see such detailed explanation…thanks:)

]]> By: logesh http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-449694 logesh Thu, 10 Mar 2011 09:31:23 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-449694 no no

]]> By: Bevan http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-407024 Bevan Tue, 07 Dec 2010 08:28:06 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-407024 Excellent Paul! a nice read, very desciptive and illustrative Excellent Paul! a nice read, very desciptive and illustrative

]]> By: jay spanjers http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-353764 jay spanjers Wed, 28 Jul 2010 00:58:10 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-353764 code 2383 curent below normal or open 2387 vgt activator driver circuit (motor)mechanical system not responding or out of adjustment 2388 vgt actuator position failed automatic calibration procedure-out of calibration 9122 vgt actuator over temperature (calculated) data valid but above normal operating range- least severe 2963 engine coolant temperature high-data valid but above normal operationg range least severe level What to check after visual checking wires and fuses both apear ok where to get electric dignostic tree information. I hope to trouble shoot this issue code 2383 curent below normal or open
2387 vgt activator driver circuit (motor)mechanical system not responding or out of adjustment
2388 vgt actuator position failed automatic calibration procedure-out of calibration
9122 vgt actuator over temperature (calculated) data valid but above normal operating range- least severe
2963 engine coolant temperature high-data valid but above normal operationg range least severe level

What to check after visual checking wires and fuses both apear ok
where to get electric dignostic tree information. I hope to trouble shoot this issue

]]> By: shafiul http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-342578 shafiul Tue, 22 Jun 2010 12:24:42 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-342578 thats great,we have two vtg in two engines of rolls royce.but one is manual and other is automatic/digital.so i need some kind of manual or instruction for this do you help me ya?? thats great,we have two vtg in two engines of rolls royce.but one is manual and other is automatic/digital.so i need some kind of manual or instruction for this do you help me ya??

]]> By: Priyadarshan http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-332761 Priyadarshan Fri, 21 May 2010 11:16:32 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-332761 Is there any difference between VGT and VTT, As per my understanding of VGT is that there will be movable vanes near turbine which can minimise or maximise gas flow onto the turbine. Where as in VTT I'm told that turbine blades are movable. Please Clarify. Is there any difference between VGT and VTT,
As per my understanding of VGT is that there will be movable vanes near turbine which can minimise or maximise gas flow onto the turbine.

Where as in VTT I’m told that turbine blades are movable.

Please Clarify.

]]> By: MAK MANGADE http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-318311 MAK MANGADE Wed, 07 Apr 2010 09:00:38 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-318311 itsss amaizing..... itsss amaizing…..

]]> By: ScottKit aircraft http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-295449 ScottKit aircraft Mon, 01 Feb 2010 14:23:01 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-295449 VGT and wastegates are thoughtless . My Honda B18b aircraft engines retard intake camshaft to dynamically lower the compression ratio . This precisely controls Turbo boost , at all altitudes . Its an amplified effect , a slight retard of camshaft will drop boost quickly . On takeoff , at 200 HP / 7500 rpm , a 5 degree retard will drop H.P. to 170 . VGT and wastegates are thoughtless .

My Honda B18b aircraft engines retard intake camshaft to

dynamically lower the compression ratio . This precisely controls

Turbo boost , at all altitudes .

Its an amplified effect , a slight retard of camshaft will drop boost quickly .

On takeoff , at 200 HP / 7500 rpm , a 5 degree retard will drop

H.P. to 170 .

]]> By: carenyoso http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-281182 carenyoso Thu, 10 Dec 2009 04:20:47 +0000 http://paultan.org/archives/2006/08/16/how-does-variable-turbine-geometry-work/#comment-281182 My ride has VGT technology, powerfull compared to its rivals without. My ride has VGT technology, powerfull compared to its rivals without.

]]> By: BALAJI http://paultan.org/2006/08/16/how-does-variable-turbine-geometry-work/#comment-256612 BALAJI Sun, 23 Aug 2009 20:10:44 +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 Tue, 07 Apr 2009 03:37:05 +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 22:59:13 +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 15:06:31 +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 12:44:11 +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? <a href="http://yovitadiah.bravehost.com/TWINCHARGER_FREEWHEEL.jpg" rel="nofollow">http://yovitadiah.bravehost.com/TWINCHARGER_FREEW...</a> 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_FREEW…

]]> 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 Sat, 19 Aug 2006 02:19:20 +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 21:10:46 +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 20:27:04 +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 20:09:56 +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 15:16:18 +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 14:51:17 +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 13:44:34 +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 10:30:55 +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 Thu, 17 Aug 2006 02:10:10 +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. <a href="http://www.f1technical.net/forum/viewtopic.php?p=22873" rel="nofollow">http://www.f1technical.net/forum/viewtopic.php?p=...</a> 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=…

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

]]> 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 22:24:32 +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 21:05:40 +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 21:02:25 +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 20:42:08 +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?

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