BMW_N46

BMW N46

BMW N46

Reciprocating internal combustion engine

The BMW N46 is a naturally aspirated inline-four piston engines which replaced the BMW N42 and was produced from 2004 to 2015.[1]

Quick Facts Overview, Production ...

The N46 serves as the basis for the smaller BMW N45 engine (which does not have Valvetronic).

In 2007, the N46's successor - the BMW N43 - was introduced. However, the direct-injected N43 was not sold in countries with high-sulfur fuel, so the N46 continued to be produced alongside the N43. The N46 continued production until 2015, when the last N46 models were replaced by the BMW N13 turbocharged four-cylinder engine.

Design

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 Motronic version ME9.2 to version MV17.4.6.[2] The redline is 6,500 rpm.[4]

Versions

More information Version, Displacement ...

N46B18

The N46B18 has a 1,796 cc (109.6 cu in) displacement and produces 85 kW (114 bhp) and 175 N⋅m (129 lb⋅ft).[5]

Applications:

N46B20U0

The N46B20U0 produces 105 kW (141 bhp) and 200 N⋅m (148 lb⋅ft).

N46B20U1

The N46B20U1 produces 95 kW (127 bhp) and 180 N⋅m (133 lb⋅ft).[5]

Applications:

N46B20U2

The N46B20U2 produces 100 kW (134 bhp) and 180 N⋅m (133 lb⋅ft). It was used instead of the N43 engine in countries with high-sulfur fuel.

Applications:

N46B20A

The N46B20A produces 105 kW (141 bhp) and 200 N⋅m (148 lb⋅ft).

Applications:

  • 2004-2006 E46 318i, 318Ci and 318ti

N46B20O1

The N46B20O1 produces 110 kW (148 bhp) and 200 N⋅m (148 lb⋅ft). On models with secondary air injection, peak torque occurs at 3750 rpm instead of 3600 rpm.

Applications:

  • 2004-2007 E83 X3 2.0i
  • 2005-2008 E85 Z4 2.0i
  • 2004-2007 E87 120i
  • 2005-2007 E90/E91 320i

N46NB20

The N46B20 produces 127 kW (170 bhp) and 210 N⋅m (155 lb⋅ft). It was used instead of the N43 engine in countries with high-sulfur fuel.

Applications:

N46B20 engine number key code:

See also

References

  1. [1]
    "X1 E84 18i model selection". www.realoem.com. Retrieved 24 March 2017.
  2. [2]
    "BMW N46B30 engine". www.mywikimotors.com. Retrieved 24 March 2017.
  3. [3]
    "BMW N43, N45 and N46 Four Cylinder Valvetronic Engines". www.unixnerd.demon.co.uk. Archived from the original on 17 February 2020. Retrieved 24 March 2017.
  4. [4]
    "BMW Workshop Manual". www.workshop-manuals.com. Retrieved 13 July 2013.
  5. [5]
    "Engine specifications for N46 engines". www.bmwheaven.com. Retrieved 3 June 2012.
  6. [6]
    Treichel, Alois (2020-09-17). "Model Archive for BMW models · BMW E90 · Development Code · bmwarchive.org". Model Archive for BMW models · bimmerarchive.org. Retrieved 2020-09-17.
Share this article:

This article uses material from the Wikipedia article BMW_N46, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.