[Mani59]

     Featured on BIMMERPOST.com

Interesting reading..

http://www.autoexpress.co.uk/bmw/3-s...-tech-revealed

BMW announces next-gen three and four-cylinder petrol and diesel units - but they won’t go in the new 5 Series yet

BMW has confirmed its commitment to internal combustion with an all-new modular engine family. The three- and four-cylinder Efficient Dynamics petrols and diesels are said to be more efficient, smoother and more powerful than any BMW units to date.

Despite speculation that these engines would make their debut on the forthcoming BMW 5 Series, powertrain head Dominic Spanring confirmed to Auto Express that they would not be fitted to the new 5 Series at launch. “We are talking about years not months with these engines. The new 5 Series will use updated versions of current engines for now”. BMW's all-new 5 Series will be revealed in September and go on sale in early 2017.

The modular family is therefore more likely to debut first in the next-generation 3 Series in late 2017, and will then be rolled out across BMW and MINI’s future model ranges. The company is claiming a 5 per cent reduction in CO2 emissions, an average 7bhp power boost and around 20Nm more torque than the existing engines these units replace.

The upgrades may not look huge by traditional measurements but BMW claims that NOx and particulate pollutant levels have been improved significantly thanks to a clever new cylinder cooling system, plus Selective Catalytic Reduction (SCR) exhaust gas treatment.

The three-cylinder diesels will come with 95bhp and 220Nm of torque, or 114bhp and 270Nm of torque. The four cylinder engines will be available in 147bhp, 188bhp and 231bhp forms, with 350, 400 and 450Nm of torque respectively. The power outputs for the petrol engines have yet to be revealed, however.

The new engines will eventually be used on every BMW model from the 1 Series to the 5 Series, and will probably be used in every new MINI bar the Countryman, which arrives a bit too early to receive them.

The four cylinder units now also receive twin-scroll turbocharging across the range, which used to be reserved of high performance BMW diesel engines. The technology sees one vane controls the flow of air at low pressures and engine speeds, and a second ensuring performance is sustained at high engine speeds. Fuel injection pressures are up across the new engine range too, with a maximum of 2,700 bar. New balancer shafts for the three-cylinder units is also said to improve Noise, Vibration and Harshness (NVH) levels.

http://www.autocar.co.uk/car-news/ne...on-engine-line

BMW has revealed its new-generation Efficient Dynamics petrol and diesel engines. The company claims the new engines offer marginally better economy, as well as smoother running, improved acoustic qualities and - especially with the diesels - much more efficient pollution control.

The engines are designed for transverse and longitudinal installations so will be used in future Minis as well BMWs. The company isn’t saying when the new engines will arrive, but it’s likely some will appear first in the all-new BMW 5 Series, which is expected to go on sale later this year.

The German car maker is promising around a 5% cut in CO2 emissions, 7bhp more power and about 15lb ft extra torque. However, it’s thought the redesigned engines have been primarily optimised to reduce exhaust pollutants as much more stringent regulations come in globally over the next decade.

The three-cylinder petrol engines now come in 95bhp/162lb ft and 114bhp/199lb ft guises. The four-cylinder powerplants are available with 147bhp/248lb ft, 188bhp/295lb ft and 231bhp/331lb ft.

Both the three-cylinder and four-cylinder petrol engines get BMW’s ‘Twin Power’ turbo set-up, which consists of direct fuel injection, Valvetronic variable lift for the inlet valves and Double Vanos variable timing for the exhaust and intake valves.

The exhaust manifold and turbocharger are now housed in the cylinder head and a new direct fuel injection system operates a maximum pressure of 350 bar – rather higher than in the current generation of petrol engines. BMW says this allows for more accurate metering of the fuel and, as a result, lower emissions of pollutants.

The new cooling system should also reduce pollutants by optimising the combustion process. This features a coolant pump with two separate outlets – one for the head and one for the block. The two parts of the engine ideally need to be cooled at different rates.

Both engines still have balancer shafts, but the unit for the three-cylinder engine has been redesigned. A single-piece timing chain is used to help reduce noise.

The new diesel engines also promise a 5% drop in CO2 emissions and an emphasis on reducing exhaust pollutants. All of these new four-cylinder diesel engines now get twin-turbochargers - something previously reserved for the most powerful BMW diesel engines.

The low-pressure turbocharger (used at lower engine speeds) has electrically adjustable vanes and the high-pressure turbocharger is integrated into the exhaust manifold. There’s also a switchable cooling system for the low-pressure turbocharger.

New exhaust gas recirculation (EGR) systems have been introduced for both the three-pot and four-cylinder diesel engines. These are intended to further cut exhaust pipe emissions of nitrogen oxide (NOx), a polluting gas that has proven to be difficult to reduce in real-world driving conditions.

As a result, all of the engines get a selective catalytic reduction system and AdBlue urea injection into the exhaust stream to further reduce NOx emissions.

The common-rail fuel injection system of the new diesel family has been redesigned and gets new injectors with a "range of upgraded" sensors to ensure even greater accuracy of the amount of fuel injected into the cylinder.

Fuel pressures have been further increased to 2200 bar for the three-cylinder engines and an extraordinary 2700 bar for the four-cylinder engines.

Perhaps the most unusual aspect of the new diesel engines is that the cylinder bores are not the same diameter along their whole length. Instead, the bores on the new engines are fared sightly at the lower end.

BMW engineers say "thermal and dynamic forces" when the engine is assembled and especially during operation mean that straight-sided bores are not ideal.

Either the piston crown becomes ‘loose’ at the top of the bore or 'tight' at the bottom, increasing friction on every piston stroke. The new bore design should eliminate this problem.

[KGB_123_99]

Interesting, looks like transverse applications get an air-air FMIC where is inline gets water-air.

"The exhaust manifold and turbocharger are now housed in the cylinder head..."

Does this mean I need to fiddle with the cylinder head if the turbo needs to be replaced?

[Pauleebe]

I'm wondering how these engines will fit into the G20 3 series.

The B48 in the 330 puts out 250hp, so surely the new 4 cylinder variant that comes in at 230hp is way too close to the B48 to be used in the 320.

Perhaps these are for other markets? Or will get rolled out with the G20 LCI, assuming the 330 and 340 get rebadged and/or more powerful engines, making room for this new 4 cylinder engine in the 320. This would also better coincide with the fact that we aren't expecting to see these in the G30 5 series within the year.

[spuntyb]

Originally Posted by dwalls90

I'm wondering how these engines will fit into the G20 3 series.

The B48 in the 330 puts out 250hp, so surely the new 4 cylinder variant that comes in at 230hp is way too close to the B48 to be used in the 320.

Perhaps these are for other markets? Or will get rolled out with the G20 LCI, assuming the 330 and 340 get rebadged and/or more powerful engines, making room for this new 4 cylinder engine in the 320. This would also better coincide with the fact that we aren't expecting to see these in the G30 5 series within the year.

It's confusing. One article refers to the new 3 and 4 cylinder diesel engines making 95-231bhp (which, given the numbers, makes sense to me). The second article refers to the new gas engines making these numbers.

So...:

These numbers don't make sense to me for gas engines. Unless it's 2001 or so.

[Antetokounmpo]

Originally Posted by KGB_123_99

Interesting, looks like transverse applications get an air-air FMIC where is inline gets water-air.

"The exhaust manifold and turbocharger are now housed in the cylinder head..."

Does this mean I need to fiddle with the cylinder head if the turbo needs to be replaced?

That just means the turbo inlet is bolted directed to the head instead of an exhaust manifold in between the turbo and head. This is the new trend, I know Cadillac does it with their V6TT.

[M3anPower]

Interesting, will these replace the current hybrid engines as well?

[raysspl]

Only a matter of time when 3 series gets 3 cylinder? 3 for 3... ?

[anotheran]

I'm really surprised by the new engines when the B48 is just about to be adopted by the F30/F32. Would've guessed that the B48 would be carried over to the G20

[clbmw]

Twin turbo or twin scroll ?

[SCOTT26]

Originally Posted by raysspl

Only a matter of time when 3 series gets 3 cylinder? 3 for 3... ?

We already have a three cylinder 3er in Europe.

[keanu1]

So, the power is actually the same?!?

[David70]

Originally Posted by KGB_123_99

"The exhaust manifold and turbocharger are now housed in the cylinder head..."

Does this mean I need to fiddle with the cylinder head if the turbo needs to be replaced?

VW also does it with their 1.8T and 2.0T's EA888 and the reasoning they gave -

That exhaust manifold is built right into the cylinder head, too, which gets the motor up to operating temperature very quickly, for faster cabin heating, but also reduces typical cold-engine wear caused by increased friction.

The water-cooled exhaust manifold has another upside: direct cooling of the catalytic converter. That saves the cat from overheating, and means the EA888 doesn't need to waste fuel by richening the mixture (another way to cool the cat, but a big detriment to fuel economy).

[BimmerMat135]

A G21 with the 231bhp/500nm B47 would be a perfect daily car.

[Wozich]

Aren't all of these engines already available in Europe in some models? Except for the 231bhp diesel engine, which is probably going to replace the x25d.

[F32Fleet]

What a waste of money. BMW could save millions of dollars if they didn't change engines so often. Christ the B-series are just beginning to arrive on U. S. shores.

[GuidoK]

that 95hp diesel....thats gonna be used in bmw's?
Or just for the mini's?
I mean a sub 100hp bmw....you'd have to go back to the mid 90's to find that (m41 diesel, 90hp)

[Wozich]

Originally Posted by GuidoK

that 95hp diesel....thats gonna be used in bmw's?
Or just for the mini's?
I mean a sub 100hp bmw....you'd have to go back to the mid 90's to find that (m41 diesel, 90hp)

It's already used in the 114d.

[VTECaddict]

Originally Posted by F32Fleet

What a waste of money. BMW could save millions of dollars if they didn't change engines so often. Christ the B-series are just beginning to arrive on U. S. shores.

Originally Posted by anotheran

I'm really surprised by the new engines when the B48 is just about to be adopted by the F30/F32. Would've guessed that the B48 would be carried over to the G20

I suspect Auto Express is confused and they are just talking about the diesels being added to the B series engine range. Current 4 cyl diesel models are still using the N47.

I don't doubt BMW is working on the next best thing aready, but it seems premature to publicly announce such a thing when the B-series engines have not even expanded to all engine configurations and car models yet...

EDIT: never mind, it looks like the B37 and B47 have been in use since 2014. Just not in the US.

[keanu1]

Originally Posted by Wozich

Aren't all of these engines already available in Europe in some models? Except for the 231bhp diesel engine, which is probably going to replace the x25d.

Bmw X5 25d has this engine with 231 hp

[N & M]

Originally Posted by SCOTT26

We already have a three cylinder 3er in Europe.

It will interesting to see how the next gen of M engines will develop. Will any of these will be taken as a base or not?

[oceanview]

Originally Posted by Raj59

Seems that this latest pic is showing a 6-cylinder diesel. Referring to the pic Name...:
"m_performance_twinpower_turbo_reihen-6-zylinder_dieselmotor_03.jpg"

[Tomahawk]

Has to be referring to the diesel engines. Otherwise makes no sense as these engine are out now?