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 | |
|---|---|
 | |
| Overview | |
| Manufacturer | BMW |
| Production | 2014–present |
| Layout | |
| Configuration | Inline-four |
| Displacement | 1,597 cc (97 cu in) 1,998 cc (122 cu in) |
| Cylinder bore | 82.0 mm (3.23 in) |
| Piston stroke | 75.6 mm (2.98 in) 94.6 mm (3.72 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC, with VVT & VVL |
| Valvetrain drive system | Chain |
| Compression ratio | 8.9:1 11:1 |
| Combustion | |
| Turbocharger | Single twin-scroll with air-to-liquid intercooler |
| Fuel system | Bosch HDEV5/HDEV5 EVO 200 bar (2,901 psi) central high-pressure Gasoline direct fuel injection. One direct injector per cylinder fed by an Bosch engine-driven high-pressure fuel pump (B48 non-TU) Bosch HDEV6 350 bar (5,076 psi) central high-pressure gasoline direct fuel injection. One direct injector per cylinder fed by an Bosch HDP6 engine-driven high-pressure fuel pump (B48TU) |
| Management | Bosch Di-Motronic |
| Fuel type | Petrol |
| Oil system | Wet sump with water heat exchanger |
| Cooling system | Water-cooled |
| Output | |
| Power output | 115–225 kW (154–302 hp) |
| Torque output | 250–450 N⋅m (184–332 lb⋅ft) |
| Chronology | |
| Predecessor | BMW N20 |
The B48 is part of a modular BMW engine family of 3-cylinder (B38/B37), 4-cylinder (B48/B47) and 6-cylinder (B58/B57) engines,[1] which use a displacement of 500 cc (30.5 cu in) per cylinder.
Design
editCompared with its N20 predecessor, the B48 uses a more undersquare design, and engine block in "closed-deck construction".[2] As with 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]
Technical Update versions
editThe B48 engine was revised in 2018, dubbed "B48TU" ("Technical Update"), with notable changes and improvements; a new one-part timing chain as opposed to the earlier two-part, a new separate cooling circuits for the cylinder head and crankcase, and forged conrods and forged crankshaft is now 2.03 lb (1 kg) lighter due to the use of lighter materials and different machining. The fuel system also upgraded with the new Bosch HDP6 high pressure fuel pump and Bosch HDEV6 injectors that borrows from the P48 Turbo Engine.[5]
Models
edit| Engine | Power | Torque | Years | |
|---|---|---|---|---|
| B48B16 | 1,597 cc (97 cu in) | 125 kW (168 hp) at 5,000–6,000 rpm |
250 N⋅m (184 lb⋅ft) at 2,000–4,700 rpm |
2017– |
| B48B20 | 1,998 cc (122 cu in) | 115 kW (154 hp) at 4,500–6,500 rpm |
250 N⋅m (184 lb⋅ft) at 1,300–4,300 rpm |
2020– |
| B48A20U1 | 131 kW (176 hp)
at 5,000–5,500 rpm |
280 N⋅m (207 lb⋅ft)
at 1,350–4,200 rpm | ||
| B48B20M0 | 135 kW (181 hp) at 5,000–6,500 rpm |
270 N⋅m (199 lb⋅ft) at 1,350–4,600 rpm |
2016– | |
| 135 kW (181 hp) at 5,000–6,500 rpm |
290 N⋅m (214 lb⋅ft) at 1,350–4,250 rpm | |||
| B48A20M1 | 141 kW (189 hp) at 5,000–6,500 rpm |
280 N⋅m (207 lb⋅ft) at 1,250–4,600 rpm |
2014– | |
| 141 kW (189 hp) at 4,700–6,000 rpm |
280 N⋅m (207 lb⋅ft) at 1,250–4,750 rpm | |||
| 141 kW (189 hp) at 5,000–6,000 rpm |
280 N⋅m (207 lb⋅ft) at 1,350–4,600 rpm | |||
| 195 kW (261 hp) at 5,000–6,000 rpm |
400 N⋅m (295 lb⋅ft) at 1,350–4,600 rpm | |||
| B48B20M1 | 145 kW (194 hp) at 4,500–6,600 rpm |
320 N⋅m (236 lb⋅ft) at 1,450–4,200 rpm |
2019– | |
| B48B20O1 | 165 kW (221 hp) at 5,000–6,500 rpm |
310 N⋅m (229 lb⋅ft) at 1,400–5,000 rpm |
2016– | |
| B48A20O1 | 170 kW (228 hp) at 5,000–6,000 rpm |
350 N⋅m (258 lb⋅ft) at 1,250–4,500 rpm |
2015– | |
| 170 kW (228 hp) at 5,200–6,200 rpm |
300 N⋅m (221 lb⋅ft) at 1,250–4,800 rpm | |||
| 170 kW (228 hp) at 5,000–6,000 rpm |
350 N⋅m (258 lb⋅ft) at 1,450–4,500 rpm | |||
| B48O1ZIK | 180 kW (241 hp) at 4,500–6,500 rpm |
400 N⋅m (295 lb⋅ft) at 1,600–4,000 rpm |
||
| B48B20O0 | 185 kW (248 hp) at 5,200–6,500 rpm |
350 N⋅m (258 lb⋅ft) at 1,450–4,800 rpm |
2015– | |
| B48B20O1 | 190 kW (255 hp) at 5,000–6,500 rpm |
400 N⋅m (295 lb⋅ft) at 1,550–4,400 rpm |
2016– | |
| B48A20T1 | 225 kW (302 hp) at 5,000–6,250 rpm |
450 N⋅m (332 lb⋅ft) at 1,750–4,500 rpm |
2019– |
115 kW version
edit125 kW version
edit- 2019–present G20 320i (Turkish and Tunisian market)
- 2020–present G22 420i (Turkish market)
- 2021–present G26 420i (Turkish market)
- 2017–present G30 520i (Turkish and Tunisian market)
- 2018–present G01 X3 sdrive20i (Turkish market)
131 kW version
edit- 2021–present F54 MINI Cooper S Clubman (B48A20M)
- 2020–present F40 BMW 120i
135 kW version
editWhen combined with the electric motor, the 330e and 530e overall output is 185 kW (248 hp) and 420 N⋅m (310 lb⋅ft).[6][7]
- 2016–2019 F20 120i
- 2016–2019 F22/F23 220i
- 2015–2019 F30/F31/F34 320i
- 2016–2019 F30 330e
- 2016–2019 F32/F33/F36 420i
- 2017–present G30/G31 520i
- 2018–present G30/G31 530e
- 2018–present G01 X3 xDrive20i
- 2018–present G02 X4 xDrive20i
- 2019–present G20 320i
- 2019–present G20 330e
- 2020–present G22 420i
- 2021–present G42 220i
141 kW version
edit145 kW version
editIn the MINI Cooper S, a temporary overboost increases peak torque from 20 N⋅m (15 lb⋅ft) to 300 N⋅m (221 lb⋅ft).[8]
- 2014–present F56 MINI Cooper S[9] (B48A20A)
- 2020–present F44 220i Gran Coupe
- 2016–present F48 X1 20i
- 2017–present F39 X2 sDrive20i
- 2018–present G29 Z4 sDrive20i
- 2019–present J29/DB82 Toyota Supra (Japanese SZ models)
165 kW version
edit170 kW version
edit- 2014–present F56 MINI JCW Hardtop and JCW Cabrio (320 Nm)[10]
- 2017–present F56 MINI JCW Clubman and JCW Countryman ALL4 (350 Nm)
- 2015–present F45 Active Tourer 225i
- 2016–present F48 X1 25i/28i
- 2017–present F39 X2 25i/28i
- 2019–current F44 228i Gran Coupé xDrive
180 kW version
edit- 2022–present G42 230i
- 2022–present G20/G21 330i
- 2022–present G22 430i
- 2023–present U11 X1 28i xDrive
185 kW version
edit- 2015–2018 F30/F31/F34 330i
- 2016–present F22/F23 230i[11]
- 2016–present F32/F33/F36 430i
- 2018–present G01 X3 xDrive30i
- 2018–present G02 X4 xDrive30i
- 2020–present G01 X3 xDrive30e (PHEV Version)
- 2016–present G30/G31 530i
190 kW version
edit- 2016–present G11 730i/730Li
- 2017–2019 G11 740e xDrive/740Le xDrive[12] (combined with an 82 kW electric motor for a total output of 240 kW)
- 2017–2021 G32 630i
- 2019–2022 G20/G21 330i
- 2019–present G29 Z4 sDrive30i
- 2019–present J29/DB22 Toyota Supra
- 2020–present Morgan Plus Four
- 2020–present G22/G23/G26 430i
195 kW version
edit- 2020–present BMW F40 128ti
225 kW version
editIntroduced in May 2019 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.[13][14]
References
edit- ^ "BMW modular engines: B37, B38, B47 and B48". www.bmwblog.com. 21 May 2014. Archived from the original on 6 October 2021. 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. Archived from the original on 15 June 2017. Retrieved 10 May 2017.
- ^ "2016 BMW X1 first drive review". www.caranddriver.com. 16 July 2015. Archived from the original on 9 May 2017. Retrieved 10 May 2017.
- ^ "BMW B48 Four Cylinder Turbocharged Engines".
- ^ "BMW B46/B58 VS B46TU/B58TU".
- ^ "Build Your Own Car: Luxury Car Customizer by BMW USA". Archived from the original on 2017-04-29. Retrieved 2017-03-27.
- ^ "Build Your Own Car: Luxury Car Customizer by BMW USA". Archived from the original on 2021-10-06. Retrieved 2019-04-13.
- ^ "BMW's new B48 2.0 litre four-cylinder TwinPower Turbo engine to produce up to 255 hp and 400 Nm". www.paultan.org. 24 February 2014. Archived from the original on 14 August 2017. Retrieved 16 May 2017.
- ^ "MINI's Prince Engine is Dead- enter the B37 & B48". www.motoringfile.com. 5 September 2013. Archived from the original on 14 January 2016. Retrieved 16 May 2017.
- ^ "Future Mini JCW models to get new 230bhp petrol engine". Archived from the original on 2014-07-06. Retrieved 2014-07-03.
- ^ "The new 2017 BMW 2 Series now featuring the latest generation of BMW TwinPower Turbo engines". Press.bmwgroup.com. 2017-05-17. Archived from the original on 2017-09-13. Retrieved 2017-09-01.
- ^ "2017 BMW 740e xDrive Plug-In Hybrid". www.caranddriver.com. 22 July 2016. Archived from the original on 31 July 2017. Retrieved 31 July 2017.
- ^ Nishimoto, Alex (7 September 2018). "2019 BMW X2 M35i Debuts With 302-HP Turbo-Four". Motor Trend. Archived from the original on 1 October 2020. 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. Archived from the original on 6 October 2021. Retrieved 9 April 2020.
- ^ Bode, Matthias; Lampka, Andreas (20 November 2019). "The new MINI John Cooper Works GP". BMW Group. Archived from the original on 23 March 2020. Retrieved 9 April 2020.