BMW B48

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.

BMW B48
BMW B48 im BMW-Museum 2018-06.jpg
Overview
ManufacturerBMW
Production2014–present
Layout
ConfigurationInline-four
Displacement1,998 cc (122 cu in)
Cylinder bore82.0 mm (3.23 in)
Piston stroke94.6 mm (3.72 in)
ValvetrainDOHC
Compression ratio11:1
Combustion
TurbochargerSingle twin-scroll
Fuel systemDirect injection
Fuel typePetrol
Chronology
PredecessorBMW N20
B48 in a 2014 MINI Cooper S

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.

DesignEdit

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]

ModelsEdit

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–
144 kW (193 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–
185 kW (248 hp)
at 5,200–6,500 rpm
350 N⋅m (258 lb⋅ft)
at 1,450–4,800 rpm
190 kW (255 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 versionEdit

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]

  • 2018–present G02 X4 xDrive20i
  • 2019–present G20 320i
  • 2019–present G20 330e
  • 2017–present G30 530e

144 kW versionEdit

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
  • 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 versionEdit

  • 2016–2019 F20 125i

170 kW versionEdit

  • 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 versionEdit

  • 2015–2018 F30/F31/F34 330i
  • 2016–present G30 530i
  • 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 versionEdit

  • 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 versionEdit

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

ReferencesEdit

  1. ^ "BMW modular engines: B37, B38, B47 and B48". www.bmwblog.com. Retrieved 10 May 2017.
  2. ^ "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.
  3. ^ "2016 BMW X1 first drive review". www.caranddriver.com. Retrieved 10 May 2017.
  4. ^ "BMW B48 Four Cylinder Turbocharged Engines". www.unixnerd.demon.co.uk. Retrieved 16 May 2017.
  5. ^ http://www.bmw.com/com/en/newvehicles/3series/sedan/2015/showroom/technical_data.html#m=330e
  6. ^ http://www.bmw.com/com/en/newvehicles/5series/sedan/2015/showroom/technical_data.html#m=530e
  7. ^ "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.
  8. ^ "MINI's Prince Engine is Dead- enter the B37 & B48". www.motoringfile.com. Retrieved 16 May 2017.
  9. ^ http://www.autocar.co.uk/car-news/new-cars/future-mini-jcw-models-get-new-230bhp-petrol-engine
  10. ^ "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.
  11. ^ "2017 BMW 740e xDrive Plug-In Hybrid". www.caranddriver.com. Retrieved 31 July 2017.
  12. ^ Nishimoto, Alex (7 September 2018). "2019 BMW X2 M35i Debuts With 302-HP Turbo-Four". Motor Trend. Retrieved 9 April 2020.
  13. ^ 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.
  14. ^ Bode, Matthias; Lampka, Andreas (20 November 2019). "The new MINI John Cooper Works GP". BMW Group. Retrieved 9 April 2020.