BMW N42
| BMW N42 engine | |
|---|---|
| Overview | |
| Production | 2001–2004 |
| Layout | |
| Configuration | Inline-4 |
| Displacement |
|
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC, with VVT & VVL |
| Combustion | |
| Fuel type | Petrol |
| Chronology | |
| Predecessor | BMW M43 |
| Successor | BMW N46 |
The BMW N42 is a DOHC four-cylinder petrol engine which replaced the BMW M43 and was produced from 2001-2004.[1][2]
The N42 serves as the basis for the smaller N40 engine (which does not have Valvetronic).
The N42B18 won the 1.4-1.8 L category of the International Engine of the Year awards for 2001.[3]
In 2004, the N42 was replaced by the BMW N46 four-cylinder engine.
Design[edit]
Compared with its M43 predecessor, the N42 features a DOHC valvetrain, VANOS (variable valve timing) and an aluminium engine block.[4] It was the first BMW engine to have Valvetronic (variable valve lift).[5][6]
Versions[edit]
| Version | Displacement | Power | Torque | Year |
|---|---|---|---|---|
| N42B18 | 1,796 cc (109.6 cu in) | 85 kW (114 bhp) at 5,500 rpm |
175 N⋅m (129 lb⋅ft) at 3,750 rpm |
2001-2004 |
| N42B20 | 1,995 cc (121.7 cu in) | 105 kW (141 bhp) at 6,000 rpm |
200 N⋅m (148 lb⋅ft) at 3,750 rpm |
2001-2004 |
N42B18[edit]
The N42B18 has a displacement of 1,796 cc (109.6 cu in),[1] uses Bosch Motronic ME9.2 engine management[7] and has twin-balancing shafts.[citation needed]
Applications:
- 2001-2004 E46 316i and 316ti
N42B20[edit]
The N42B20 has a displacement of 1,995 cc (121.7 cu in),[1] uses Bosch DME ME9.2 fuel injection and has twin-balancing shafts.[citation needed] The N42B20 revs to 6600 rpm
Applications:
- 2001-2004 E46 318i/318Ci/318ti
See also[edit]
References[edit]
- ^ a b c "Engine specifications for N42 engines". www.bmwheaven.com. Retrieved 2012-06-03.
- ^ "3'E46 318ci model selection". www.realoem.com. Retrieved 16 March 2017.
- ^ "Archive". www.ukimediaevents.com. Retrieved 22 March 2017.
- ^ "BMW N42B20 Engine". www.mywikimotors.com. Archived from the original on 2 October 2017. Retrieved 1 October 2017.
- ^ "BMW N42 Four Cylinder Valvetronic Engine". www.unixnerd.demon.co.uk. Archived from the original on 7 February 2020. Retrieved 22 March 2017.
- ^ "Valve timing gear, cntrl unit Valvetronic BMW 3' E46, 318Ci (N42) — BMW parts catalog". www.bmwfans.info. Retrieved 3 June 2012.
- ^ "BMW 3 2006 / E46". www.obdtester.com. Retrieved 22 March 2017.