BMW B48

BMW B48 installed in a 2014 Mini Hatch Cooper S.

The BMW B48 engine is an all new, all aluminum inline-four cylinder engine produced by BMW AG. It is a critical part of BMW's new modular engine family, which is based on each cylinder comprising 500cc.

The B48 is a 2.0-litre engine featuring BMW's EfficientDynamics technology, as well as its TwinPower Turbo technology. Included in both are features such as direct injection, variable valve lift (Valvetronic), variable valve timing (Double VANOS), and turbocharging. The B48 contains a twin-scroll turbocharger. It is currently in use in the F56 Mini Cooper S, and will be available in the BMW 225i Active Tourer by the 4th quarter of 2014. It is also scheduled for duty in other future BMW products.

The B48 engine is more efficient than the previous Prince engine that BMW co-developed with PSA Peugeot Citroen. Power is up from the previous Prince 1.6-litre turbocharged motor, from 184BHP to 192BHP. Torque has also increased from 177 lb-ft, to 206 lb-ft. These torque figures are now available at only 1250RPM. Planned for future use in the 3rd generation (F56) Mini Cooper John Cooper Works model, this engine is expected to produce 231HP. Another notable feature of this engine is its over boost function (which was also available on the Prince engine). This allows the engine to increase its torque further to 221 lb·ft (300 N·m) in bursts of up to 20 seconds in the F56 Mini Cooper S.

Specifications

Bore/Stroke: 82 mm/94.6 mm
Engine Size: 1998cc
Aspiration/Fuel Delivery: Turbocharged/Piezoelectric Direct Injection

Usage and Output

Models

Models	MY	Power
Mini Cooper S	2014–	192 PS (141 kW; 189 hp) @ 4700–6000, 280 N·m (207 lb·ft) @ 1250, Overboost: 221 lb·ft (300 N·m)
Mini Cooper JCW	2014–	234 PS (172 kW; 231 hp), 236 lb·ft (320 N·m)[1]
BMW 225i Active Tourer	2015-	231 PS (170 kW; 228 hp), 258 lb·ft (350 N·m)
BMW 220i Gran Tourer	2015-	192 PS (141 kW; 189 hp), @1250, 207 lb·ft (281 N·m)
BMW 320i LCI	2015-	184 PS (135 kW; 181 hp), @1250–4600, 199 lb·ft (270 N·m)
BMW 330i LCI	2015-	252 PS (185 kW; 249 hp), 258 lb·ft (350 N·m)
BMW 730i/Li	2016-	258 PS (190 kW; 254 hp), 295 lb·ft (400 N·m)[2]

References

1. http://www.autocar.co.uk/car-news/new-cars/future-mini-jcw-models-get-new-230bhp-petrol-engine
2. http://www.bmw.com/com/en/newvehicles/7series/sedan/2015/showroom/technical_data.html#m=730i

• http://paultan.org/2014/02/25/bmws-new-2-0-litre-twinpower-turbo-engine-255hp-400nm/
• http://www.motoringfile.com/2013/09/05/minis-prince-engine-is-dead-enter-the-b37-b48/

External links

• The UnixNerd's BMW B48 engine page with photos, history and common problems.