BMW B58
BMW B58 | ||
---|---|---|
Cooling system Water-cooled | | |
Output | ||
Power output | 240–285 kW (322–382 hp) | |
Torque output | 450–500 N⋅m (332–369 lb⋅ft) | |
Dimensions | ||
Dry weight | 139 kg (306 lb) | |
Chronology | ||
Predecessor | BMW N55 |
The
The B58 is part of BMW's modular engine family, each engine using a displacement of 500 cc (30.5 cu in) per cylinder, following the
The B58 engine was named to Ward's World's 10 Best Engines four times, 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] It was named to Ward's World's 10 Best Engines in 2023 (installed in the M2).[10]
Design
Compared with its
The turbocharger is a twin-scroll design, for more efficient power delivery with less turbo lag and more power than a conventional single turbocharger, as well as for weight and space saving benefits.[11] 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.[12][13]
As per the N55, the B58 also features direct fuel injection, variable valve timing (called double Vanos by BMW), and variable valve lift (called Valvetronic by BMW).[14][15] 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.[16]
For durability and longevity, the rotating assembly has a forged steel crankshaft and forged connecting rods.[17][18]
As a part of BMW's new modular engine family, the crankcase is a completely new design identical to the B57 diesel version,[19] 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.
The engine was revised in 2018, dubbed "B58TU", with notable changes and improvements. The fuel system was updated with 75% increased pressure with updated high pressure fuel pump and injectors, a new particulate filter in the catalytic converter, a new one-part timing chain as opposed to the earlier two-part, and new separate cooling circuits for the cylinder head and crankcase. For weight savings, the crankcase wall thickness and forged crankshaft were optimized, and the exhaust manifold was integrated into the cylinder head housing.[20]
Another engine revision in 2022 added port fuel injection to complement the existing direct injection system for better emissions and functionality.[21]
Models
Engine | Power | Torque | Years |
---|---|---|---|
B58B30M0 | 240 kW (322 hp) at 5,500–6,500 rpm |
450 N⋅m (332 lb⋅ft) at 1,380–5,000 rpm |
2015–2019 |
250 kW (335 hp) at 5,500 rpm |
500 N⋅m (369 lb⋅ft) at 1,520–4,500 rpm |
2016–2021 | |
250 kW (335 hp) at 5,500-6,500 rpm |
450 N⋅m (332 lb⋅ft) at 1,380–5,200 rpm |
2017–2019 | |
265 kW (355 hp) at 5,500–6,500 rpm |
500 N⋅m (369 lb⋅ft) at 1,520–4,800 rpm |
2016–2019 | |
B58B30M1 | 250 kW (335 hp) at 5,000–6,500 rpm |
500 N⋅m (369 lb⋅ft) at 1,600–4,500 rpm |
2018– |
B58B30C | |||
B58B30O1 | 285 kW (382 hp) at 5,000–6,500 rpm | ||
B58B30M2 | 280 kW (375 hp) at 5,200-6,250 rpm |
520 N⋅m (384 lb⋅ft) at 1850-5000 rpm |
2022- |
S58B30T0 | 338 kW (453 hp) at 6,250 rpm |
550 N⋅m (406 lb⋅ft) at 2,600–5,950 rpm |
2023– |
353 kW (473 hp) at 6,250 rpm |
2020– | ||
620 N⋅m (457 lb⋅ft) at 2,600–5,950 rpm |
2019– | ||
375 kW (503 hp) at 6,250 rpm |
650 N⋅m (479 lb⋅ft) at 2,600–5,950 rpm |
B58B30M0: 240 kW (322 HP) version
Applications:
- 2015–2019 F30/F31/F34340i
- 2016–2019 F32/F33/F36 440i
- 2016–2019 G11/G12 740i/Li
B58B30M0: 250 kW (335 HP) version
Applications:
B58B30M0: 265 kW (355 HP) version
This version was used for 3-/4-Series with the "M Performance Power and Sound Kit".
Applications:
- 2016–2019 F30/F31/F34 340i[24]
- 2016–2019 F32/F33/F36 440i
- 2017–2019 G01 X3 M40i[25]
- 2018–2019 G02X4 M40i
B58B30M1: 250 kW (335 HP)
Applications:
- 2018–2023 G05 X5 xDrive40i/sDrive40i[26]
- 2018–2023 G07X7 xDrive40i
- 2018–present G29 Z4 M40i (in countries subject to EU emissions standards)[27]
- 2019–present Toyota GR Supra
- 2020–2023 G30/G31 540i
- 2020–2023 G32 640i
- 2020–2023 G06X6 xDrive40i
- 2020–2022G11/G12 740i
- 2019–present G14/G15/G16 840i
- 2019–present Morgan Plus Six[28]
B58B30C: 250 kW (335 HP)
- 2020 J29/DB Toyota Supra[29]
- 2022–present Ineos Grenadier (detuned to 286 hp)
B58B30O1: 285 kW (382 HP)
Applications:
- 2018–present G29 Z4 M40i (in countries not subject to EU emissions standards)
- 2019–present G20/G21 M340i
- 2020–present G01X3 M40i
- 2019–present G02X4 M40i
- 2020–present G22/G23/G26 M440i
- 2021–present Toyota Supra[30] (in countries not subject to EU emissions standards)
- 2021–present G42 M240i
- 2021–present Boldmen CR4
B58B30M2: 280 kW (375 HP)
- 2022–present G07X7 xDrive40i
- 2023–present G70 740i
- 2024–present G05 X5 xDrive40i
- 2024–present G06X6 xDrive40i
- 2024–present G60 540i xDrive
S58
BMW S58 engine | |
---|---|
F98 X4 M, marking the first time a stand-alone M model was produced for the X3 and X4.[31]
The S58 features twin mono-scroll turbochargers, a compression ratio of 9.3:1, a redline at 7,200 rpm with the bore and the stroke at 84 mm × 90 mm (3.31 in × 3.54 in). It also features a forged chrome molybdenum heat-treated steel crankshaft, plus forged steel connecting rods and forged aluminum pistons. The pistons are forged by Mahle and feature their proprietary anti-friction coating.[32] Like the B58, the S58 also features direct fuel injection, variable valve timing (called double Vanos by BMW), and variable valve lift (called Valvetronic by BMW). As opposed to the B58, the S58 features a slightly smaller displacement, increased bore, decreased stroke, and larger valves. Compression is decreased to 9.3:1 from 11.0:1. The S58 favors top-end power and has a higher redline of 7,200 RPM.[32] S58B30T0: 338 kW (460 HP)
S58B30T0: 344 kW (461 HP)
S58B30T0: 353 kW (473 HP)Applications: S58B30T0: 364 kW (488 HP)S58B30T0: 375 kW (510 HP)Applications:
S58B30T0: 405 kW (550 HP)Applications: S58B30T0: 412 kW (560 HP)Applications:
References
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