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Next generation BMW “B code” engines are here

Engines | February 7th, 2014 by 9
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Along with the launch of the facelifted 2015 BMW X3, the next generation BMW engines is being introduced to the market. The new B47 engine …

Along with the launch of the facelifted 2015 BMW X3, the next generation BMW engines is being introduced to the market.

The new B47 engine replaces the N47 power unit and like its predecessor is a four cylinder in-line, common rail injection, 1,995 cc displacement with a single turbocharger with variable turbine geometry.

While the N47 in the xDrive18d and xDrive20d made 143 and 184, the new B47 provides 150 and 190 bhp. The maximum torque for the based B47 remains at 360 Newton meters, but it is now available between 1500-2250 rpm (previously 1750-2500). With the more powerful stage, the maximum torque climbs from 380 to 400 Newton meters between 1750-2250 rpm (previously 380 Nm 1750-2750 rpm).

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The increase in power and torque makes the new BMW X3 noticeably faster than  previous model, the X3 xDrive20d is four tenths of a second faster.

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On the same topic, BMW development director Herbert Diess explained the new family of engines to Automotive News Europe:

What is the potential range of your new modular engine family?

A 500cc combustion chamber for both gasoline and diesel, with both three- and four-cylinder layouts, giving total capacities of 1.5 and 2.0 liters. One crucial element is that these new engines are designed to mount transversally in Mini and BMW front-drive models, as well as longitudinally in other BMWs. This is a level of flexibility we did not have in the past.

Will your renowned six-cylinder 3.0-liter engine also be derived from this new modular family?

It will — because three-, four- and six-cylinder engines are all produced on the same line.

At the same time, the new BMW B47 meets the Euro 6 emissions standard and comes with a slightly lower average fuel consumption. Depending on the transmission and expansion stage, the consumption decreases by 0.1 to 0.4 liters. With reduced rolling-resistance tires, the BMW X3 sDrive18d comes to a standard consumption of 4.7 liters, which makes it the most fuel-efficient SUV in its class.

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  • mckillio

    This doesn’t seem like that much of a bump in power for brand new engines and peak torque is in a smaller band too (typo maybe?). Though I’m sure it’s still better overall. I’ll take the next generation X1 28d and 1-series 28d GT, please.

  • Charel Lies

    I guess they came to a level in engine development where it is hard to make big leaps in all of the factors. Since at the moment fuel consumption has highest priority, thats what they are going for, even if 0,1 – 0,4 doesnt sound like much, over a lifetime of a car it still is a big deal.

  • blop

    Hope this engine will be not affected by timing chain failures like N47…

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  • BMW suspicious

    Is Timing Chain still weak point?

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  • Gabriel

    Hope they solved the nasty problem with the timing chain, because it’s very frustrating to buy a car of 50.000 k and to ruin the engine from the first km if lucky. N47 was a crappy engine with 163, 177 or 184 HP. Glad they get rid of it !

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