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  • BMW B58 Engine (2015-)

BMW B58 straight-6 3.0 DOHC engine

From 2015

BMW B58 straight-6 3.0 DOHC engine

 

 

The BMW B58 is a turbocharged direct injection straight-6 DOHC Petrol engine which began production in 2015.

Engine Size 2998cc
Cylinders 6
Valves 24
Fuel Type Petrol

 

 

 

 

It was launched in the F30 340i. It is also part of BMW's new modular engine family, which is based on each cylinder comprising 500cc following the B38 and B48 engine. Similar with its N55 predecessor, the B58 also features a single twin-scroll turbo, direct fuel injection, Dual Vanos and Valvetronic.

The B58 (installed in the M240i) topped Ward's 10 Best Engines of 2017 list. The B58 is rated at 335 horsepower and 369 lb-ft of torque, while achieving 26 mpg.

Performance

7 series

Power 321 bhp
Top Speed 155 mph
0-60 mph 5.4 secs
Torque 450 Nm, 332 ft-lb
CO2 Emissions 164 g/km
Euro Emissions Standard 6
Miles Per Tank 686 miles

1 Series M135i

Power 321 bhp
Top Speed 155 mph
0-60 mph 4.9 secs
Torque 450 Nm, 332 ft-lb
CO2 Emissions 188 g/km
Euro Emissions Standard 6
Miles Per Tank 400 miles

Design

As the successor of the BMW N55 engine, the B58 also displaces 3.0 litre (though is slightly larger at 2998cc compared to 2979cc for the N55). It has a larger turbocharger with a 6 percent increase in turbine wheel size and 10 percent increase in compressor wheel diameter, resulting in a 20 percent increase in boost pressure. The B58 uses a water-to-air intercooler integrated into the intake plenum, thus reducing the charged air volume between the compressor and the intake. This increases performance by maintaining more even temperatures inside the intake. BMW has also incorporated an engine-mounted encapsulation system, which allows the engine to retain much of its heat for up to 36 hours which helps to reduce emissions and wear and tear during start-up, especially in colder climates. As a part of BMW's new modular engine family, the crankcase is a completely new design identically with the B57 diesel version, 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 sump side.

Models

EngineDisplacementPowerTorqueRedlineBoreStrokeCRYear
B58B30M0 2,998 cc (183 cu in) 240 kW (322 hp) @ 5500-6500 450 N·m (332 lb·ft) @ 1380-5000 7000 82 mm (3.2 in) 94.6 mm (3.7 in) 11:1 2015
B58B30O0 250 kW (335 hp) @ 5500 500 N·m (369 lb·ft) @ 1520-4500 2016

Applications

B58B30M0 (240 kW)

  • 2016–present BMW 7 Series (G11) 740i/Li
  • 2016–present BMW 4 Series (F32) 440i
  • 2016–present BMW 3 Series (F30/F31) 340i

B58B30O0 (250 kW)

  • 2016–present BMW 1 Series (F20) M140i
  • 2016–present BMW 2 Series (F22) M240i
  • 2017–present BMW 5 Series (G30) 540i
 
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Read more in this section

BMW N26 Engine (2012-2016)
BMW N26 Engine (2012-2016)
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BMW B58 Engine (2015-)
BMW B58 Engine (2015-)
Read more...
BMW N54 Engine (2006-)
BMW N54 Engine (2006-)
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