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Old 02-17-2006, 07:33 PM   #1
NYCshopper
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Default NEW BMW Turbo Engines @ 2006 Geneva Show

NEW BMW Turbo Engines @ 2006 Geneva Show









Quote:
Web Translation from German BMW Press Site:

Thus BMW in Geneva presents a world premiere also on the drive sector: the first row six cylinder engine with Bi-turbocharger, gasoline direct injection High Precision Injection and full aluminum crank case. The new engine combines unusual leistungskraft with an economy unknown for engines of this building method. It is thereby a particularly fascinating example of efficient dynamics. The new turbo engine extends the drive program, which provides again and again with its varieties and the high technical level for fascination. BMW presents the current engine versions of all performance classes in Geneva, among them directly several drive units, which were distinguished only recently with a "engine of the Year Award".
http://www.e90post.com/forums/showth...4&page=1&pp=22

Quote:
N54 Bi-Turbo engine with HPI direct injection.
306HP, 400Nm available in range 1500 to 5800rpm. Max 7000 rpm. With full alluminium crankshaft casing, Bi-VANOS, electric water pump. 70kg less weight than 4.0L V8 NA engine. No turbo lag.

Tested in E90:
80-120kmh in 6.3s (eg. 330i in 8.2s)
0-100kmh in 5.7s (eg. 330i in 6.3s)
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Old 02-17-2006, 08:27 PM   #2
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Very interesting...
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Old 02-17-2006, 08:40 PM   #3
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Bi-Turbo from 0-100km/h in 5.7s???? With only 306hp? That's a lot of 'detuning' there. Though the no turbo lag is very interesting.

Is this for the upcoming 335i?
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Old 02-17-2006, 08:44 PM   #4
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That looks like a parallel setup, not sequential.
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Old 02-17-2006, 09:35 PM   #5
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"unusual leistungskraft"

I couldn't agree more.
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Old 02-17-2006, 09:36 PM   #6
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Quote:
Originally Posted by someguyzero
Bi-Turbo from 0-100km/h in 5.7s???? With only 306hp? That's a lot of 'detuning' there. Though the no turbo lag is very interesting.

Is this for the upcoming 335i?
No, that is not "detuning". They use smaller turbo to eliminate the turbo lag and improve the throttle response. It's not easy to make a turbo engine that provides maximum torque from 1500RPM. This N54 engine is supposedly one of the most advaced F/I engines in the world, just a very different animal compared to the WRX/STI turbo.
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Old 02-18-2006, 12:43 AM   #7
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Quote:
Originally Posted by Len
No, that is not "detuning". They use smaller turbo to eliminate the turbo lag and improve the throttle response. It's not easy to make a turbo engine that provides maximum torque from 1500RPM. This N54 engine is supposedly one of the most advaced F/I engines in the world, just a very different animal compared to the WRX/STI turbo.

Exactly. Ever see the puny little K03 and K04's on the AUDI's ? This is exactly how they use to achieve full boost at such low RPM's. Don't know what Turbo the 2.0T's are using. Pathetic little Honeywell units
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Old 02-18-2006, 02:54 AM   #8
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306hp? Doesn't that exactly mirror the Lexus 350IS?

- Chris
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Old 02-18-2006, 03:55 AM   #9
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Yeah, what is it, 3L? 3.5L? Still should make a lot more than 306hp when turboed.
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Old 02-18-2006, 04:11 AM   #10
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looks like bimmer can't hange with audi's new V8 turbo in the RS4 and gonna rack up a turbo engine in the next m3
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Old 02-18-2006, 07:18 AM   #11
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ahhh, NO.. Next M3 will be V8 version of M5s v10... no turbo..
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Old 02-18-2006, 09:13 AM   #12
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Quote:
Originally Posted by someguyzero
Though the no turbo lag is very interesting.
Quote:
Originally Posted by Len
They use smaller turbo to eliminate the turbo lag and improve the throttle response.
I've said it before, and I'll say it here again. Until someone comes up with massless turbines and compressors, purely exhaust driven systems will always have turbo lag. Simply having boost does not mean there is no lag. Lag is is amount less boost the turbo produces on accelleration as compared to the boost it would be producing at steady state. Having no turbo lag would be akin to saying you car can do 0-60 in zero seconds... not possible. There is nothing all that interesting about getting boost and peak torque at such low rpms. Given a small enough turbo, you could have boost at idle if you wanted (and there would still be lag). It's always give and take though, lots of boost at low rpm will mean the turbo will run very inefficiently at high rpm.
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Old 02-18-2006, 10:02 AM   #13
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Quote:
Originally Posted by brandon
I've said it before, and I'll say it here again. Until someone comes up with massless turbines and compressors, purely exhaust driven systems will always have turbo lag. Simply having boost does not mean there is no lag. Lag is is amount less boost the turbo produces on accelleration as compared to the boost it would be producing at steady state. Having no turbo lag would be akin to saying you car can do 0-60 in zero seconds... not possible. There is nothing all that interesting about getting boost and peak torque at such low rpms. Given a small enough turbo, you could have boost at idle if you wanted (and there would still be lag). It's always give and take though, lots of boost at low rpm will mean the turbo will run very inefficiently at high rpm.
Good point Brandon. I should've said "reduce" instead of "eliminate", but I think people would know that it's impossible to truely "eliminate" inertia from a physical system, and I meant it in the asymptotic sense.

As far as the term "turbo lag" goes, it seems to me like it can be used for two somewhat different but related things. People use it to describe the delayed throttle response on boost, and also to describe the lack of boost below certain RPM. Either way, this new N54 engine is supposed to "reduce" it greatly.
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Old 02-18-2006, 02:27 PM   #14
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ewwwwwwwwwww plastic end tanks!
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Old 02-18-2006, 02:56 PM   #15
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Quote:
Originally Posted by NismoSkylineGTR
looks like bimmer can't hange with audi's new V8 turbo in the RS4 and gonna rack up a turbo engine in the next m3
RS4 is a naturally aspirated 414hp V8...NO turbos.
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Old 02-18-2006, 03:00 PM   #16
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Still trying to figure out how the rear turbo compressor gets its air.

And the intake to thr front turbo looks horribly constrictive.

I'd imagine if you can figure out how to add more fuel (who knows how you "upgrade" direct injectors), lots of power would be possible with intake and exhaust work, and obviously larger turbos.
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Old 02-18-2006, 11:39 PM   #17
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Damn looks like e46 M3s may still hold their value yet. I was hoping the turbos would push it into the e46 M3's range, therefore it would cause them to depreciate faster so I can buy one!!!!
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Old 02-19-2006, 04:46 PM   #18
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Quote:
Originally Posted by CapeRex
RS4 is a naturally aspirated 414hp V8...NO turbos.

well top gear when they tested the new rs4 they said its packed with bi turbo
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Old 02-19-2006, 05:19 PM   #19
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this was talked about 5 or 6 months ago... i remember hearing it's gonna be an "in between" motor for the top end of the 3 series (not counting the M), and the M...
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Old 02-19-2006, 06:11 PM   #20
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Quote:
Originally Posted by NismoSkylineGTR
well top gear when they tested the new rs4 they said its packed with bi turbo
wasnt that the RS6? V8 bi-turbo
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Old 02-19-2006, 06:14 PM   #21
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RS6 is using Gallardo's V10.. Guys, get your facts straight..
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Old 02-19-2006, 06:15 PM   #22
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Quote:
Originally Posted by NismoSkylineGTR
well top gear when they tested the new rs4 they said its packed with bi turbo
no they didn't.
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Old 02-19-2006, 06:20 PM   #23
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Quote:
Originally Posted by amdmaxx
RS6 is using Gallardo's V10.. Guys, get your facts straight..
yea ok and ur 2000 VW must have the V12 right?

http://www.fantasycars.com/sedans/html/rs6.html
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Old 02-19-2006, 06:29 PM   #24
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worst belt system ever +1
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Old 02-19-2006, 06:33 PM   #25
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Quote:
Originally Posted by amdmaxx
RS6 is using Gallardo's V10.. Guys, get your facts straight..
The previous generation RS6 used a bi-turbo V8 rated at around 450hp.
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