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      01-24-2011, 02:01 PM   #1
southlight
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BIMMERPOST NEWS
Compared: BMW Turbo Inline-4 vs Audi 2.0TFSI
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BMW recently unveiled first details on their new 2 litre inline-4 TwinPower Turbo petrol engine. In terms of this engine's competitors, the first thing that comes to mind is Audi's 2.0TFSI engine. They currently run two engine generations, the older EA113 as still found in the TT-S and the newer EA888 powering virtually all 2.0TFSI models. The latter also includes Valvelift which is roughly comparable to BMW's Valvetronic.

Here are all figures you need to know to draw a comparison and figure where each engine might be able to trump, and where not. Some points I found remarkable when doing this comparison:

All three offer a maximum torque of 258 lb-ft, yet the BMW engine is able to spool up quicker (max. torque at 1250 rpm). Also, it's the only engine out of this pack that has an aluminum engine block, so I expect it to be the lightest as well. Despite similar torque-to-weight figures, the BMW unit also returns the best gas mileage, quite remarkable compared to the much lighter TT-S. That being said, the N20 runs the highest compression and the highest boost level.

Stay tuned for more information and pictures from BMW. In the meantime, enjoy this comparison:


Specifications BMW TwinPower Inline-4 EngineAudi 2.0TFSI S model (265hp)Audi 2.0TFSI Valvelift (211hp)
EngineN20B20EA113 CDLEA888 CDNC
Configurationinline-4inline-4inline-4
Valves per cylinder444
Engine technologyBMW TwinPower Turbo technology with twin-scroll charging, High Precision Injection direct petrol injection, VALVETRONIC fully variable valve control, double-VANOS fully variable camshaft control2.0 liter turbocharged, inline four-cylinder, spark ignition engine with TFSIŽ direct injection, four valves per cylinder, double overhead camshafts [DOHC], S model turbocharger (enlarged turbine wheel, spiral, compressor inlet and compressor wheel)Inline four-cylinder gasoline engine with FSI direct injection, exhaust turbocharger with intercooler, Audi valvelift system on exhaust valves, DOHC, chain driven, hydraulic lifters
Cylinder BlockAluminumCast IronCast Iron
Cylinder HeadTBAAluminumAluminum-alloy
TurbochargerSingle Turbo - Twinscroll Single TurboSingle Turbo
Max Boost Pressure (bar / psi)1.2 / 17.41.2 / 17.40.9 / 13 (*1)
Effective capacity (ccm)199719841984
Bore (mm)84.082.582.5
Stroke (mm)90.192.892.8
Compression Ratio10.09.89.6
Redline (rpm)700070006800
Fuel Grademin RON 91min RON 91 min RON 91
Output (kw / bhp)180 / 245195 / 265155 / 211
at (rpm)5000 - 650060004300 - 6000
Torque (Nm / ft lbs)350 / 258350 / 258350 / 258
at (rpm)1250 - 49002500-50001500 - 4200
Power per litre (hp)122.7133.6106.4
Torque per litre (Nm)175.3176.4176.4
Torque per litre (lb ft)129.2130130
Performance
ModelX1 28iTT-SA4 2.0 TFSI Quattro
Weight (lbs)364932413626
Power-to-weight (lbs/hp)14.912.217.2
0-62mph (s)6.15.46.6
Fuel Consumption (MPG)
Combined (US)29.82425
Combined (UK)35.728.830
Notes (*1) No information from Audi available, value from owners reading out ECU





DYNO CHART:

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