BMW B58

The BMW B58 is a turbocharged straight-six engine, which began production in 2015.[1] The B58 replaced the N55 and was launched in the F30 340i.[2]

BMW B58
B 58 engine on Bmw 340i.jpeg
Overview
ManufacturerBMW
Production2015–present
Layout
ConfigurationStraight-six
Displacement3.0 L (2,998 cc)
Cylinder bore82 mm (3.23 in)
Piston stroke94.6 mm (3.72 in)
Block materialClosed-deck aluminium
Head materialAluminium
ValvetrainDOHC 4 valves x cyl. with Valvetronic and Double VANOS
Timing drive systemChain
Compression ratio11.0:1
RPM range
Redline7,000 rpm
Combustion
Supercharger48V electrical systems Starter Generator (2020; some Model)
TurbochargerSingle twin-scroll with air-to-liquid Intercooler / Twin-Turbo with air-to-liquid Intercooler (S58)
Fuel systemDirect injection
ManagementRobert Bosch GmbH Di-Motronic
Fuel typePetrol
Oil systemWet sump with water heat exchanger
Cooling systemWater-cooled
Output
Power output240–375 kW (326–510 PS; 322–503 hp)
Torque output450–600 N⋅m (332–443 lb⋅ft)
Dimensions
Dry weight139 kg (306 lb)
Chronology
PredecessorBMW N55
2020 Toyota Supra, B58B30C Engine (USDM)

The B58 is part of BMW's new modular engine family, each engine using a displacement of 500 cc (30.5 cu in) per cylinder, following the B38 and B48 engine.[3]

The B58 engine was named Ward's 10 Best Engines in 2016 (installed in the 340i),[4] 2017 (M240i),[5] 2019 (X5)[6] and 2020 (M340i).[7]

The S58 engine, which was released in early 2019, is the high performance version of the B58.[8][9]

DesignEdit

Compared with its BMW N55 predecessor, the B58 features a 20% increase in boost pressure, a closed-deck engine block design, an increase in compression ratio to 11.0:1 and a slight increase in displacement from 2,979 to 2,998 cc (181.8 to 182.9 cu in) with added weight of 8 kg (18 lb).

The intercooler - a water-to-air design - is integrated into the intake plenum, to reduce the volume of air between the turbocharger and the cylinders.[10]

As per the N55, the B58 also features a single twin-scroll turbo, direct fuel injection, variable valve timing (called double Vanos by BMW), variable valve lift (called Valvetronic by BMW).[11][12] The redline remains at 7,000 rpm, the bore and the stroke is 82 mm × 94.6 mm (3.23 in × 3.72 in).

The B58 also features an engine-mounted heat encapsulation system to reduce engine wear and emissions during start-up.[13]

As a part of BMW's new modular engine family, the crankcase is a completely new design identical to the B57 diesel version,[14] engineered as both a gasoline and diesel engine in one common part. The closed deck crankcase is equipped with a completely new structure which can be identified by a complex array of ribs on the exhaust and intake side and an additional reinforcement frame on the oil pump side.

ModelsEdit

Engine Power Torque Years
B58B30M0 240 kW (326 PS; 322 hp)
at 5,500–6,500 rpm
450 N⋅m (332 lb⋅ft)
at 1,380–5,000 rpm
2015–
250 kW (340 PS; 335 hp)
at 5,500 rpm
500 N⋅m (369 lb⋅ft)
at 1,520–4,500 rpm
2016–
250 kW (340 PS; 335 hp)
at 5,500–6,500 rpm
450 N⋅m (332 lb⋅ft)
at 1,380–5,200 rpm
2017–
265 kW (360 PS; 355 hp)
at 5,500–6,500 rpm
500 N⋅m (369 lb⋅ft)
at 1,520–4,800 rpm
2016–
B58B30M1 250 kW (340 PS; 335 hp)
at 5,000–6,500 rpm
500 N⋅m (369 lb⋅ft)
at 1,600–4,500 rpm
2018–
B58B30C 250 kW (340 PS; 335 hp)
at 5,000–6,500 rpm
B58B30O1 285 kW (387 PS; 382 hp)
at 5,000–6,500 rpm
S58B30T0 353 kW (480 PS; 473 hp)
at 6,250 rpm
600 N⋅m (443 lb⋅ft)
at 2,600–5,950 rpm
2019–
375 kW (510 PS; 503 hp)
at 6,250 rpm

B58B30M0: 240 kW (322 HP) versionEdit

Applications:

B58B30M0: 250 kW (335 HP) versionEdit

Applications:

B58B30M0: 265 kW (355 HP) versionEdit

Applications:

B58B30M0: 265 kW (355 HP) versionEdit

This version was used for 3-/4-Series with the "M Performance Power and Sound Kit".

Applications:

B58B30M1: 250 kW (335 HP)Edit

Applications:

B58B30C: 250 kW (335 HP)Edit

B58B30O1: 285 kW (382 HP)Edit

Applications:

  • 2018-present G29 Z4 M40i (in countries not subject to EU emissions standards)
  • 2019-present G20 M340i
  • 2020-present G01 X3 M40i
  • 2019-present G02 X4 M40i
  • 2020–present G22 M440i
  • 2021 Toyota Supra[24] (in countries not subject to EU emissions standards)

S58Edit

BMW S58 engine
Overview
Production2019–present
Layout
ConfigurationStraight-six
Displacement3.0 L (183 cu in)
Cylinder bore84mm
Piston stroke90mm
ValvetrainDOHC w/ VVT
Combustion
TurbochargerTwin-turbo
Fuel typePetrol
Chronology
PredecessorBMW S55

The S58 engine is the high performance version of the B58 engine. It was introduced in the F97 X3 M and F98 X4 M, marking the first time a stand-alone M model was produced for the X3 and X4.[25]

S58B30T0: 353 kW (480 PS)Edit

Applications:

  • 2019-present F97 X3 M
  • 2019-present F98 X4 M
  • 2020-present G80 M3[26]
  • 2020-present G82 M4

S58B30T0: 375 kW (510 PS)Edit

Applications:

  • 2019-present F97 X3 M Competition
  • 2019-present F98 X4 M Competition
  • 2020-present G80 M3 Competition
  • 2020-present G82 M4 Competition

ReferencesEdit

  1. ^ DeMattia, Nico (28 October 2015). "BMW's N55 engine will be missed, but the new B58 might be even better". BMWBlog. Retrieved 20 May 2016.
  2. ^ "BMW F30 LCI 340i". www.paultan.org.
  3. ^ Meiners, Jens (22 April 2011). "BMW's New Three-, Four-, and Six-Cylinder Engine Family Detailed". CARandDriver. Retrieved 21 May 2016.
  4. ^ Murphy, Tom (10 December 2015). "Electrics Charge Up 10 Best Engines List". wardsauto.com. Retrieved 16 May 2020.
  5. ^ Murphy, Tom (12 December 2016). "Seven Turbos, Three Hybrids Share Wards 10 Best Engines Honors". wardsauto.com. Retrieved 16 May 2020.
  6. ^ Murphy, Tom (14 December 2018). "2019 Wards 10 Best Engines: Gasoline, Diesel, Electrification Honored". wardsauto.com. Retrieved 16 May 2020.
  7. ^ Murphy, Tom (20 December 2019). "All-Inclusive List for 2020 Wards 10 Best Engines & Propulsion Systems". wardsauto.com. Retrieved 16 May 2020.
  8. ^ "BMW F97 X3 M launching in 2019 with new S58 engine and 450 horsepower". www.bmwblog.com. Retrieved 28 December 2017.
  9. ^ "BMW Developing S58 Engine as S55 Successor, Will Debut in 2019 X3 M". www.autoevolution.com. Retrieved 28 December 2017.
  10. ^ "BMW's New B58 3-liter Engine Won't Be a Tuner's Delight". www.autoevolution.com. Retrieved 30 December 2017.
  11. ^ "Big Changes Under Hood in '16 BMW 3-Series". www.wardsauto.com. Retrieved 30 December 2017.
  12. ^ "2017 BMW 2 Series Lineup Revealed with New Engines". www.automobilemag.com. Retrieved 30 December 2017.
  13. ^ Boeriu, Horatiu (11 December 2015). "BMW's B58 engine among Wards' 10 Best engines for 2016". BMWBlog. Retrieved 21 May 2016.
  14. ^ "How is the B58 engine (340i) improved from the venerable N55? We have answers". www.bimmerfest.com. Retrieved 30 December 2017.
  15. ^ Sheehan, Sam (16 May 2016). "New bmw m140i m240i and plug 7 series range revealed". autocar.co.uk. Retrieved 22 May 2016.
  16. ^ BMW (24 September 2017). "BMW G30 5 series specifications". bmw.de. Retrieved 24 September 2017.
  17. ^ "BMW G01 X3 technical specifications". www.bmw.de. Archived from the original on 2017-10-13. Retrieved 2017-10-12.
  18. ^ BMW (12 June 2018). "M performance power and sound kit for 340i / 440i". www.bmw.de. Archived from the original on 12 June 2018. Retrieved 12 June 2018.
  19. ^ BMW (12 June 2018). "M performance power and sound kit for 540i". www.bmw.de. Archived from the original on 12 June 2018. Retrieved 12 June 2018.
  20. ^ "The all-new BMW X5: The Prestige SAV with the most innovative technologies". www.press.bmwgroup.com. Retrieved 2018-06-12.
  21. ^ "2020 BMW Z4 M40i Prototype Driven: The Supra's German Brother". Car and Driver. Retrieved 2018-06-12.
  22. ^ https://www.topgear.com/car-news/geneva-motor-show/morgan-plus-six-comes-supra-power
  23. ^ "2019 Toyota Supra engine deep dive: This isn't a 2JZ". Motor Authority. Retrieved 28 August 2019.
  24. ^ "2019 Toyota Supra engine deep dive: This isn't a 2JZ". Motor Authority. Retrieved 28 August 2019.
  25. ^ "The all-new BMW X3 M and the all-new BMW X4 M." www.press.bmwgroup.com. Retrieved 2019-06-17.
  26. ^ "A Closer Look At The Future BMW M3/M4 Engine – The S58". www.bmwblog.com. Retrieved 2019-06-17.