BMW B48
| BMW B48 | |
|---|---|
 | |
| Overview | |
| Manufacturer | BMW |
| Production | 2014–present |
| Layout | |
| Configuration | Inline-four |
| Displacement | 1,998 cc (122 cu in) |
| Cylinder bore | 82.0 mm (3.23 in) |
| Piston stroke | 94.6 mm (3.72 in) |
| Valvetrain | DOHC |
| Valvetrain drive system | Chain |
| Compression ratio | 11:1 |
| Combustion | |
| Turbocharger | Single twin-scroll |
| Fuel system | Direct injection |
| Fuel type | Petrol |
| Chronology | |
| Predecessor | BMW N20 |
The BMW B48 is a turbocharged inline-four petrol engine which replaced the BMW N20 and has been in production since 2014. It was first used in the F56 Mini Hatch and has been used in BMW applications since 2015.
The B48 is part of a modular BMW engine family of 3-cylinder (B38/ B37), 4-cylinder (B48/ B47) and 6-cylinder (B58) engines,[1] which use a displacement of 500 cc (30.5 cu in) per cylinder.
Design
Compared with its N20 predecessor, the B48 uses a more undersquare design.[2] As per the N20, the block and head are made from aluminium.[3] Other features shared with the N20 include a twin-scroll turbocharger, direct injection, variable valve lift (Valvetronic) and variable valve timing (Double VANOS).[4]
Models
| Power | Torque | Years |
|---|---|---|
| 135 kW (181 hp) at 5,000–6,500 rpm |
290 N⋅m (214 lb⋅ft) at 1,350–4,250 rpm |
2016– |
| 145 kW (194 hp) at 4,700–6,000 rpm |
280 N⋅m (207 lb⋅ft) at 1,250–4,500 rpm |
2014– |
| 165 kW (221 hp) at 5,000–6,500 rpm |
310 N⋅m (229 lb⋅ft) at 1,400–5,000 rpm |
2016– |
| 170 kW (228 hp) at 5,000–6,500 rpm |
300 N⋅m (221 lb⋅ft) at 1,250–4,800 rpm |
2015– |
| 188 kW (252 hp) at 5,200–6,500 rpm |
350 N⋅m (258 lb⋅ft) at 1,450–4,800 rpm | |
| 192.5 kW (258 hp) at 5,000–6,500 rpm |
400 N⋅m (295 lb⋅ft) at 1,550–4,400 rpm |
2016– |
| 225 kW (302 hp) at 5,000–6,250 rpm |
450 N⋅m (332 lb⋅ft) at 1,750–4,500 rpm |
2019– |
135 kW version
When combined with the electric motor, the 330e and 530e overall output is 185 kW (248 hp) and 420 N⋅m (310 lb⋅ft)[5] [6]
- 2015–2019 F30/F31/F34 320i
- 2016–2018 F30 330e
- 2016–2019 F20 120i
- 2016-present F33|F36 420i
- 2018–present G01 X3 xDrive20i
145 kW version
In the MINI Cooper S, a temporary overboost increases peak torque by 20 N⋅m (15 lb⋅ft) to 300 N⋅m (221 lb⋅ft).[7]
- 2014–present F56 MINI Cooper S[8] B48A20A
- 2015–present F22 220i
- 2020–present F44 220i
- 2016–present F48 X1 20i
- 2017–present F39 X2 sDrive20i
- 2018–present G29 Z4 sDrive20i
- 2019–present J29 Toyota Supra (Japanese SZ models)
165 kW version
- 2016–2019 F20 125i
170 kW version
- 2014–present F56 MINI JCW Hardtop and JCW Cabrio (320 Nm)[9]
- 2017–present F56 MINI JCW Clubman and JCW Countryman ALL4 (350 Nm)
- 2015–present F22 225i
- 2016–present F48 X1 25i/28i
- 2017–present F39 X2 25i/28i
- 2019–current F44 228i Gran Coupé xDrive
185 kW version
- 2015–2018 F30/F31/F34 330i
- 2016–present G30 530i
- 2017–present G30 530e
- 2016–present F22 230i[10]
- 2016–present F32/F33/F36 430i
- 2018–present G01 X3 xDrive30i
- 2018–present G02 X4 xDrive30i
- 2020–present G01 X3 xDrive30e (PHEV Version)
190 kW version
- 2016–present G11 730i/730Li
- 2017–2019 G11 740e xDrive/740Le xDrive[11] (combined with 82 kW electric motor for total output of 240 kW)
- 2017–present G32 630i
- 2019–present G20 330i
- 2019-present G29 Z4 Sdrive30i
- 2019–present A90 Toyota Supra (Japanese A90 models since 2019/international models since 2020)
- 2020-present Morgan Plus Four
- 2020–present G22 430i
225 kW version
This engine features a reinforced crankshaft with larger main bearings and new pistons with a lower 9.5:1 compression ratio. This allows the engine to take more boost pressure from a larger turbocharger, which blows compressed air through a reworked intake tract.[12] Revealed in May 2019, this engine is shared with the new MINI Countryman JCW, Clubman JCW[13] and JCW GP models.[14] The engine output increased by 55 kW (74 hp) to 306 PS (301 HP) and torque increased to 450 N⋅m (332 ft⋅lb).
- 2019–present F39 X2 M35i
- 2019–present F40 M135i xDrive
- 2019–present F54 Clubman JCW
- 2019–present F60 Countryman JCW
- 2019–present F44 M235i xDrive Gran Coupé
- 2020–present F56 MINI John Cooper Works GP
References
- ^ "BMW modular engines: B37, B38, B47 and B48". www.bmwblog.com. Retrieved 10 May 2017.
- ^ "Watch out for the B's – Comparing the upcoming B48 2.0 liter turbo four-cylinder to the N20 it will replace". www.bimmerboost.com. Retrieved 10 May 2017.
- ^ "2016 BMW X1 first drive review". www.caranddriver.com. Retrieved 10 May 2017.
- ^ "BMW B48 Four Cylinder Turbocharged Engines". www.unixnerd.demon.co.uk. Retrieved 16 May 2017.
- ^ http://www.bmw.com/com/en/newvehicles/3series/sedan/2015/showroom/technical_data.html#m=330e
- ^ http://www.bmw.com/com/en/newvehicles/5series/sedan/2015/showroom/technical_data.html#m=530e
- ^ "BMW's new B48 2.0 litre four-cylinder TwinPower Turbo engine to produce up to 255 hp and 400 Nm". www.paultan.org. Retrieved 16 May 2017.
- ^ "MINI's Prince Engine is Dead- enter the B37 & B48". www.motoringfile.com. Retrieved 16 May 2017.
- ^ http://www.autocar.co.uk/car-news/new-cars/future-mini-jcw-models-get-new-230bhp-petrol-engine
- ^ "The new 2017 BMW 2 Series now featuring the latest generation of BMW TwinPower Turbo engines". Press.bmwgroup.com. 2017-05-17. Retrieved 2017-09-01.
- ^ "2017 BMW 740e xDrive Plug-In Hybrid". www.caranddriver.com. Retrieved 31 July 2017.
- ^ Nishimoto, Alex (7 September 2018). "2019 BMW X2 M35i Debuts With 302-HP Turbo-Four". Motor Trend. Retrieved 9 April 2020.
- ^ Bode, Matthias; Lampka, Andreas (15 May 2019). "The new MINI John Cooper Works Clubman and the new MINI John Cooper Works Countryman". BMW Group. Retrieved 9 April 2020.
- ^ Bode, Matthias; Lampka, Andreas (20 November 2019). "The new MINI John Cooper Works GP". BMW Group. Retrieved 9 April 2020.