BMW explains their tri-turbo diesel [video]

Produces 381 PS (280 kW / 375 bhp)

BMW has released a new promotional video for their tri-turbo 3.0-liter six-cylinder diesel engine.

While we've already heard plenty about the engine, the clip gives a nice overview of how the turbochargers work. As the video explains, "at low revs, the first small turbocharger ensures fast acceleration" which is optimized by variable turbine geometry. At medium revs, the second turbocharger is activated to maximize torque output. Lastly at high revs, the third turbo comes online to help the engine produce its peak output of 381 PS (280 kW / 375 bhp) and 740 Nm (546 lb-ft) of torque."

Thanks to all turbochargers, the M550d xDrive sedan accelerates from 0-100 km/h in 4.7 seconds, averages 6.3 L/100km (44.8 mpg UK / 37.3 mpg US) and has CO2 emissions of 165 g/km.

As we have previously reported, the engine will be standard equipment on the company's M Performance Automobiles lineup which includes the M550d xDrive Sedan / Touring, X5 M50d and X6 M50d. The M550d will be launched in Germany on May 12, while the X5/X6 M50d will start arriving at dealerships on June 16.

Source: BMW via BMW Blog

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Comments (11)

Han Solo Han Solo
Why not just 1 BIG Turbo instead of all the unneccessary complexity???
Feb 29th, 2012 3:33am
0 1
perdaniels perdaniels
Because one big turbocharger would mean that the engine would get massive turbo lag and horrible performance at low rpm.
Mar 19th, 2015 12:24pm
1 0
norther norther
impressed.... by how complicated it is. still prefer the twin turbo
Feb 28th, 2012 7:22pm
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Poteck Poteck
That´s called CHAPUZA, 1 Turbo = 1 problem, 3 turbos = Nightmare. Bad news. That sounds to me as a workaround because they can´t finish the develop of the new turbo technology that made what those 3 turbos do. A few month ago they patent a new turbo that are more "elastic" in different revs. Come on BMW go back to the design board and improve those thing. 3 Turbos? what a Joke...
Feb 28th, 2012 11:06am
1 1
Vee4you Vee4you
Are we talking availability in US dealerships as well on June 16?
Feb 28th, 2012 5:02am
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eddie eddie
BMW is very well known for their marvelous cutting edge technology engines. I have also heard they are working on electric turbochargers and their are coming out with world leading carbon fiber mass production.
Feb 28th, 2012 3:08am
1 1
adz911 adz911
All wonderfully complex and I hope it doesn't being about any unwanted mechanical issues like DBaskov says, but aside from all that.....the noise this thing produces is just plain EPIC!!!!!!!!
Feb 28th, 2012 1:09am
1 1
DBaskov DBaskov
Impressive, but doesn't additional amount of turbochargers create more potential mechanical problems?
Feb 28th, 2012 12:54am
1 1
affirmative , DBaskov . complex engine componentry translates to complex moving parts subject to complex wear and tear . let's just pin our hopes on BMWs badge of reliabilty for this engine to work practicably . perhaps WCF could furnish us in the near future with long-term user report if BMWs newfangled tri-turbocharger are truly worthy of its merits .
Feb 28th, 2012 8:53am
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MRAD , perhaps you can educate us exactly as to what areas of failure does BMW disappoint . and if that is the case , do these failures specifically point out towards inferior engine performance/longevity which can be tied up to this latest engineering advancement ? if you claim that BMW cars are poorly engineered , then why is it that they are still actively engaged in the automobile/motorcycle manufacturing business instead of hitting Chapter 11 like GM did ? historically speaking , it was with BMW air-cooled , radial-engined Luftwaffe FockeWulf 190 fighter planes that put fear in the hearts of many American/British fighter pilots/bomber crews during WW2 due to its formidable battlefield performance. the Allies went so far as to steal operational FW190 examples to fully assess its excellent air combat capabilities , outstanding attributes that formed the template for subsequent single-seat Allied fighter aircraft. now if that isn't enough proof of reliability , then like you said , the world must be really so full of blinded BMW fanatics .
Feb 28th, 2012 11:53pm
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DrMikHead DrMikHead
What a machine!! Incredible
Feb 27th, 2012 8:56pm
3 1