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BMW B38 engine
The BMW B38 is a 1.2 and 1.5 L (1,198 and 1,499 cc) turbocharged straight-three DOHC petrol engine, which replaced the straight-four BMW N13. Production started in 2013. It is part of a modular BMW engine family, of straight-three (B38), straight-four (B48) and straight-six (B58) alloy block and head petrol engines,[1] which use a displacement of 400 cc (24.4 cu in) per cylinder in the 1.2 and 500 cc (30.5 cu in) per cylinder in the 1.5. It specifically shares a lot of components with the BMW B37, due to their same size/configuration. The B38 is used in front-wheel drive cars (such as the Mini Hatch and BMW 2 Series Active Tourer), as well as BMW's traditional rear-wheel drive and all-wheel drive (xDrive) configurations. The first car to use the B38 is the BMW i8 hybrid sports coupé,[2] where it is used as a transverse mid-mounted engine.[3] DesignThe B38 features direct injection, an 11:1 compression ratio,[4] variable valve timing (double-VANOS) and the single-scroll turbocharger with the world's first aluminium turbine housing,[5][6] manufactured by Continental. On the 1.2 Liter versions, the bore is 78 mm (3.1 in) and the stroke is 83.6 mm (3.3 in). On the 1.5 Liter versions, the bore is 82 mm (3.2 in) and the stroke is 94.6 mm (3.7 in). Models
B38A12U0Applications:[7] 55 kW (74 hp) version:
75 kW (101 hp) version:
B38A15M0 / B38B15M0 (B38A15M1/B38B15M1 for post-2018 manufactured engines)Applications:[9] 75 kW (101 hp) version: 80 kW (107 hp) version:
100 kW (134 hp) version (104kW (141bhp) for post-2018 manufacture)
B38A15M2Applications: B38K15T0Applications:[3]
References
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