BMW B38 engine explained
| B38 engine |
| Manufacturer: | BMW |
| Production: | 2013–present |
| Predecessor: | BMW N13 |
| Turbocharger: | Single-scroll |
| Fuelsystem: | Direct injection |
| Displacement: | 1198cc
1499cc |
| Bore: | 78mm
82mm |
| Stroke: | 83.6mm
94.62NaN2 |
| Configuration: | straight-3 |
| Fueltype: | Gasoline |
| Valvetrain: | DOHC |
| Compression: | 11:1 |
The BMW B38 is a 1198and 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 4001NaN1 per cylinder in the 1.2 and 5001NaN1 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]
Design
The B38 features direct injection, an 11:1 compression ratio,[4] variable valve timing (double-VANOS) and the twin-power turbo turbocharger with the world's first aluminium turbine housing,[5] [6] manufactured by Continental.
On the 1.2Liter versions, the bore is 78mm and the stroke is 83.61NaN1. On the 1.5Liter versions, the bore is 82mm and the stroke is 94.61NaN1.
Models
| Engine | Displacement | Power | Torque | Years |
|---|
| B38A12U0[7] | 11980NaN0 | 550NaN0
at 4,000 rpm | 1500NaN0
at 1,400–4,000 rpm | 2014– |
750NaN0
at 4,250 rpm | 1800NaN0
at 1,400–4,000 rpm | 2014- |
| B38A15M0 / B38B15M0[8] [9] [10] | 14990NaN0 | 1000NaN0–1160NaN0
at 4,400–6,000 rpm | 2200NaN0–2300NaN0
at 1,250–4,300 rpm | 2014–2018 |
| 1700NaN0
at 5,800 rpm | 3200NaN0
at 3,700 rpm | 2013– |
| B38A15M1 / B38B15M1 (improvement of B38A15M0) | 14990NaN0 | 1040NaN0 at 4,400-6,000 rpm | 2200NaN0at 1,250-4,300 rpm | 2018- | |
B38A12U0
Applications:
550NaN0 version:
- 2014–current F55/F56 Mini One First
750NaN0 version:
- 2014–2018 F55/F56 Mini One
B38A15M0 / B38B15M0 (B38A15M1/B38B15M1 for post-2018 manufactured engines)
Applications:
750NaN0 version:
- 2015–2021 BMW F45/F46 216i Active Tourer / Gran Tourer
- 2018–present F55/F56 Mini One
800NaN0 version:
1000NaN0 version (104kW (141bhp) for post-2018 manufacture)
- 2015–2019 BMW F20/F21 118i
- 2015–2021 BMW F22/F23 218i coupe / convertible
- 2014–2021 BMW F45/F46 218i Active Tourer / Gran Tourer
- 2015–2019 BMW F30/F31 318i LCI
- 2015–2021 BMW F48 X1 sDrive18i[11]
- 2014–present Mini F55/F56/F57 Cooper
- 2015–2019 Mini F54 Clubman
- 2017–present Mini F60 Countryman
- 2017–2023 BMW F39 X2 sDrive18i
- 2017–2021 BMW F45 225xe Active Tourer (PHEV)
- 2019–present BMW F40 118i
- 2019–present BMW F44 218i Gran Coupé
- 2020–2023 BMW F39 xDrive25e1160NaN0 version:
B38A15M2
Applications:
- 2022–present BMW U11/12 X1
- 2021–present BMW U06
- 2023–present BMW U10 X2
B38K15T0
Applications:
Notes and References
- Web site: BMW modular engines: B37, B38, B47 and B48. www.bmwblog.com. 21 May 2014 . 10 May 2017. 6 October 2021. https://web.archive.org/web/20211006181234/https://www.bmwblog.com/2014/05/21/bmw-modular-engines-b37-b38-b47-b48/. live.
- Web site: BMW Dreizylinder-Motoren: Mehr Details im Interview mit Dr. Lopez. www.bimmertoday.de. 18 September 2012 . 28 May 2017. German. 20 September 2012. https://web.archive.org/web/20120920062928/http://www.bimmertoday.de/2012/09/18/bmw-dreizylinder-motoren-2013-technik-details-benziner-diesel-lopez-interview/. live.
- Web site: Product information: I12 Powertrain. www.bimmerpost.com. 28 May 2017. 3 March 2016. https://web.archive.org/web/20160303223130/http://bmwi.bimmerpost.com/forums/attachment.php?attachmentid=1066902&d=1406510130. live.
- Web site: BMW B38 Three Cylinder Turbocharged Engines . www.unixnerd.co.uk . 30 September 2020 . 10 August 2020 . https://web.archive.org/web/20200810113750/http://unixnerd.co.uk/b38.html . live .
- Web site: Inside Continental's new aluminum turbocharger . . Morey . Bruce . 19 August 2014 . 30 September 2020.
- Web site: Continental Supplies World's First Turbocharger with Aluminum Turbine Housing in Cars . . 30 September 2020 .
- Web site: B38A12U0. bmwarchive.de. 14 December 2014. https://web.archive.org/web/20141214124811/http://www.bmwarchiv.de/m-code/b38a12u0.html. 14 December 2014. dead.
- Web site: 3-CYLINDER GASOLINE ENGINES . www.bmwgroup.com . dead . https://web.archive.org/web/20141214122634/http://www.bmwgroup.com/powertrain/en/automotive_engines/3-cylinder_gasoline_engines_2.html . 14 December 2014 .
- Web site: B38A15M0. www.bmwarchive.de. 14 December 2014. https://web.archive.org/web/20141214124814/http://www.bmwarchiv.de/m-code/b38a15m0.html. 14 December 2014. dead.
- Web site: HARDTOP 2 DOOR: ALL FEATURES . www.miniusa.com . 29 December 2015 . 28 September 2013 . https://web.archive.org/web/20130928035325/http://www.miniusa.com/content/miniusa/en/model/hardtop/hardtop-all-features.html . live .
- Web site: BMW X!: At a glance. www.bmw.com. 28 May 2017. 2 July 2015. https://web.archive.org/web/20150702093841/http://www.bmw.com/com/en/newvehicles/x/x1/2015/showroom/engines.html#3cylpetrol. live.
