BMW N46
| BMW N46 engine | |
|---|---|
 | |
| Overview | |
| Manufacturer | BMW |
| Production | 2004-2015 |
| Layout | |
| Configuration | straight-4 DOHC |
| Chronology | |
| Predecessor | BMW N42 |
| Successor | BMW N43 |
The BMW N46 is a straight-4 DOHC piston engine which replaced the N42 and was produced from 2004 to 2015.[1]
Compared with its N42 predecessor, the N46 features a revised crankshaft, intake manifold[2] and valvetrain.[3] In 2007, the N46 was updated, which was known as the N46N. Changes included the intake manifold, exhaust camshaft and the engine control unit was changed from Bosch ME9.2 to Bosch MV17.4.6.[2]
The N46 serves as the basis for the smaller N45 engine (which does not have valvetronic).
In 2007, the N46's successor - the N43 - was introduced. However, the direct-injected N43 was not sold in countries with high-sulfur fuel, so the N46N continued to be produced alongside the N43. The N46N continued production until 2015, when the last N46 models were replaced by the turbocharged N13.
Models
| Engine | Displacement | Power | Torque | Redline[4] | Year |
|---|---|---|---|---|---|
| N46B18 | 1,796 cc | 85 kW (116 PS; 114 hp) @ 5500 | 175 N⋅m (129 lb⋅ft) @ 3750 | 6500 | 2004 |
| N46B20U1 | 1,995 cc | 95 kW (129 PS; 127 hp) @ 5750 | 180 N⋅m (133 lb⋅ft) @ 3250 | 6500 | 2004 |
| N46B20U2 | 100 kW (136 PS; 134 hp) @ 5750 | 180 N⋅m (133 lb⋅ft) @ 3250 | 6500 | 2007 | |
| N46B20O0 | 105 kW (143 PS; 141 hp) @ 6000 | 200 N⋅m (148 lb⋅ft) @ 3750 | 6500 | 2004 | |
| N46B20O1 | 110 kW (150 PS; 148 hp) @ 6200 | 200 N⋅m (148 lb⋅ft) @ 3600 | 6500 | 2004 | |
| 110 kW (150 PS; 148 hp) @ 6200 | 200 N⋅m (148 lb⋅ft) @ 3750 | 6500 | 2004 | ||
| N46NB20 | 115 kW (156 PS; 154 hp) @ 6400 | 200 N⋅m (148 lb⋅ft) @ 3600 | 6500 | 2007 |
N46B18
The N46B18 has a 1796 cc displacement and produces 85 kW (116 PS; 114 hp) and 175 Nm.[5]
Applications:
- 2004-2005 E46 316i/316ti
N46B20U1
The N46B20U1 produces 95 kW (127 hp) and 180 N⋅m (133 lb⋅ft).[5]
Applications:
N46B20U2
The N46B20U2 produces 100 kW (134 hp) and 180 N⋅m (133 lb⋅ft). It was used instead of the N43 in countries with high-sulfur fuel.
Applications:
N46B20A
The N46B20A produces 105 kW (141 hp) and 200 N⋅m (148 lb⋅ft).
Applications:
- 2004-2006 E46 318i, 318Ci and 318ti
N46B20O1
The N46B20O1 produces 110 kW (148 hp) and 200 N⋅m (148 lb⋅ft). On models with secondary air injection, peak torque occurs at 3750 rpm instead of 3600 rpm.
Applications:
N46NB20
The N46NB20 produces 115 kW (154 hp) and 200 N⋅m (148 lb⋅ft). It was used instead of the N43 in countries with high-sulfur fuel.
Applications:
- 2007-2011 E81/E82/E87/E88 120i
- 2007-2013 E90/E91/E92/E93 320i
- 2007-2010 E60 520i
- 2009-2015 E84 X1 sDrive18i / xDrive18i
- 2007-2010 E83 X3 2.0i
See also
References
- ^ "X1 E84 18i model selection". www.realoem.com. Retrieved 24 March 2017.
- ^ a b "BMW N46B30 engine". www.mywikimotors.com. Retrieved 24 March 2017.
- ^ "BMW N43, N45 and N46 Four Cylinder Valvetronic Engines". www.unixnerd.demon.co.uk. Retrieved 24 March 2017.
- ^ "BMW Workshop Manual". www.workshop-manuals.com. Retrieved 13 July 2013.
- ^ a b "Engine specifications for N46 engines". www.bmwheaven.com. Retrieved 3 June 2012.