BMW making Variable Turbine Geometry Turbocharger?

mdynamics · 07-05-2008, 11:07 AM

I just saw this picture of the 3.0-litre straight six engine for the newly released 7 series, and I thought I should share this with you guys. Complete details of the new 7 series are still not out yet but according to this picture the new 7 series will have a Variable Turbine Geometry Turbocharger similar to the one found in the 911 Turbo and it is apparently used on BMWs famous 3.0-litre straight six engine. So this might the replacement for the twin turbos used for the N54. A single turbo will reduce weight and deliver an even smoother power delivery along the rpm spectrum, as we have all seen in the 911 turbo with VTG.

My observations are based on this picture posted on bimmerpost.com, and if these pictures are not real of the 7 series then I’m sorry and disregard my observation.

http://www.7post.com/forums/showthread.php?t=154335

Attachment 9246

mdynamics · 07-05-2008, 11:44 AM

another angle
Attachment 9251

RobLS · 07-05-2008, 12:07 PM

Hmm its gonna take some getting use to, but I like it, flows better.

amdmaxx · 07-05-2008, 03:02 PM

well, the power figures are different, 7 is listed @ 326hp...
Hopefully this is true and 1/3 gets that same turbo.

Brandon26pdx · 07-05-2008, 04:53 PM

You guys sure that's not a diesel engine? The picture catalogue in the link showed the car as a 730d...

mdynamics · 07-05-2008, 05:10 PM

Quote:

Originally Posted by Brandon26pdx

You guys sure that's not a diesel engine? The picture catalogue in the link showed the car as a 730d...

It could be for the diesel, but even if it was, where you think the twin turbo idea BMW came up with was from, a 5 series diesel. So if it showed up in the diesel engine, it will eventually find its way to gasoline engine.

It does make sense for them to head that way since BMW always advances its engine technology more frequently. And a single VTG (variable turbine geometry) turbo is lighter than the twin turbos, plus less turbo lag and a slightly more hp. I think it’s neat for them to develop this.

atr_hugo · 07-05-2008, 05:14 PM

Based on the shape of the piston domes, I suspect that's a diesel. Brandon nailed it.

mdynamics · 07-05-2008, 05:23 PM

actually you are right about that, after looking more carefully at the pics I think the sparkplugs are absent which indicates it is a diesel engine. Still could make its way to the gasoline engine.

FibreOptix · 07-05-2008, 08:21 PM

So the RPM speed will control the turbo somewhat like the RPM controls the pulley on a supercharger? Except of course the turbo uses exhaust as well.

UT,oh then no way to control BOOST

No pulley to change no actuator to open/close

We're screwed!!!

mdynamics · 07-05-2008, 09:11 PM

Quote:

Originally Posted by FibreOptix

We're screwed!!!

Not really, It will most likely be controled by the ECU which you could mode to control boost. However, they are going to be very efficient to begin with.

FibreOptix · 07-05-2008, 09:56 PM

Quote:

Originally Posted by mdynamics

Not really, It will most likely be controled by the ECU which you could mode to control boost. However, they are going to be very efficient to begin with.

Ya THINK??? Boost is controled that way now.

Only time will tell, only time will tell...

bimmertech · 07-05-2008, 11:09 PM

i saw that turbo set up when i was in school for diesel. it's used in the euro spec n57 diesel motor. us spec diesels will get the twin turbo (in series) design instead of the single large variable vane turbo. the variable vanes are used in lieu of a wastegate to control boost.

amdmaxx · 07-06-2008, 07:34 AM

thst diesel has less hp (240) than 335d that's coming here.. (275hp).
Anyone care to explain?

Kris · 07-06-2008, 05:31 PM

what is that massive thing hanging off the turbo? Cat?!

atr_hugo · 07-06-2008, 08:48 PM

Yeah kinda - the urea injection chamber possibly

07-05-2008, 11:07 AM	#1
mdynamics Private First Class 20 Rep 106 Posts Drives: E92 M3, X3 & 325e Join Date: Jul 2008 Location: CT iTrader: (0)	BMW making Variable Turbine Geometry Turbocharger? I just saw this picture of the 3.0-litre straight six engine for the newly released 7 series, and I thought I should share this with you guys. Complete details of the new 7 series are still not out yet but according to this picture the new 7 series will have a Variable Turbine Geometry Turbocharger similar to the one found in the 911 Turbo and it is apparently used on BMWs famous 3.0-litre straight six engine. So this might the replacement for the twin turbos used for the N54. A single turbo will reduce weight and deliver an even smoother power delivery along the rpm spectrum, as we have all seen in the 911 turbo with VTG. My observations are based on this picture posted on bimmerpost.com, and if these pictures are not real of the 7 series then I’m sorry and disregard my observation. http://www.7post.com/forums/showthread.php?t=154335 Attachment 9246 Attached Images
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07-05-2008, 11:44 AM	#2
mdynamics Private First Class 20 Rep 106 Posts Drives: E92 M3, X3 & 325e Join Date: Jul 2008 Location: CT iTrader: (0)	another angle Attachment 9251 Attached Images
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07-05-2008, 12:07 PM	#3
RobLS Major 29 Rep 1,193 Posts Drives: M3 Coupe Join Date: Aug 2007 Location: Near Perpetual Rain iTrader: (0)	Hmm its gonna take some getting use to, but I like it, flows better.
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07-05-2008, 03:02 PM	#4
amdmaxx My gift Registry: M2 119 Rep 1,432 Posts Drives: Future Mowner of Monster Join Date: Nov 2005 Location: USA iTrader: (0)	well, the power figures are different, 7 is listed @ 326hp... Hopefully this is true and 1/3 gets that same turbo.
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07-05-2008, 04:53 PM	#5
Brandon26pdx Lieutenant Colonel 28 Rep 1,938 Posts Drives: 2011 135i Join Date: Oct 2007 Location: Portland, OR iTrader: (1)	You guys sure that's not a diesel engine? The picture catalogue in the link showed the car as a 730d...
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07-05-2008, 05:14 PM	#7
atr_hugo No longer moderate 325 Rep 4,401 Posts Drives: '13 135i Join Date: Jun 2007 Location: - iTrader: (0)	Based on the shape of the piston domes, I suspect that's a diesel. Brandon nailed it.
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07-05-2008, 05:23 PM	#8
mdynamics Private First Class 20 Rep 106 Posts Drives: E92 M3, X3 & 325e Join Date: Jul 2008 Location: CT iTrader: (0)	actually you are right about that, after looking more carefully at the pics I think the sparkplugs are absent which indicates it is a diesel engine. Still could make its way to the gasoline engine.
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07-05-2008, 08:21 PM	#9
FibreOptix Second Lieutenant 17 Rep 275 Posts Drives: BMW E90 335i Join Date: Apr 2008 Location: Northeast US iTrader: (0)	So the RPM speed will control the turbo somewhat like the RPM controls the pulley on a supercharger? Except of course the turbo uses exhaust as well. UT,oh then no way to control BOOST No pulley to change no actuator to open/close We're screwed!!!
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07-05-2008, 11:09 PM	#12
bimmertech Private First Class 4 Rep 131 Posts Drives: Join Date: Oct 2007 iTrader: (0)	i saw that turbo set up when i was in school for diesel. it's used in the euro spec n57 diesel motor. us spec diesels will get the twin turbo (in series) design instead of the single large variable vane turbo. the variable vanes are used in lieu of a wastegate to control boost.
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07-06-2008, 07:34 AM	#13
amdmaxx My gift Registry: M2 119 Rep 1,432 Posts Drives: Future Mowner of Monster Join Date: Nov 2005 Location: USA iTrader: (0)	thst diesel has less hp (240) than 335d that's coming here.. (275hp). Anyone care to explain?
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07-06-2008, 05:31 PM	#14
Kris Colonel 123 Rep 2,295 Posts Drives: m3 Join Date: Jun 2008 Location: USOFA iTrader: (0)	what is that massive thing hanging off the turbo? Cat?!
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07-06-2008, 08:48 PM	#15
atr_hugo No longer moderate 325 Rep 4,401 Posts Drives: '13 135i Join Date: Jun 2007 Location: - iTrader: (0)	Yeah kinda - the urea injection chamber possibly
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