BMW N45

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Evidence for most of the information is missing. Only sources 4 and 5 as evidence for the technical data are sufficient, the rest are unusable. - Jojhnjoy ( discussion ) ( activity ) ( focus ) 12:53, 4 Sep. 2017 (CEST)
BMW

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BMW N45
Production period: 2004-2011
Manufacturer: BMW
Working principle: Otto
Motor design: line
Valve control: DOHC
Drilling: 84 mm
85 mm
Hub: 72 mm
88 mm
Displacement: 1596 cm 3
1997 cm 3
Mixture preparation: Manifold injection
Engine charging: -
Power: 85-126 kW
Torque: 150-200 Nm
Previous model: BMW N40
Successor: BMW N43

The BMW N45 is a four-cylinder in - line engine from BMW . The N45 engine is a revised N40 engine . The naturally aspirated N45 engine was offered in the BMW E46 until it was used in the 116i . The 316ci and 316ti models were used in countries with high displacement taxation, where BMW suspected the 1.8-liter N42 engine would not sell.

The N45 engine, like the N42 engine, has the ME9 engine control, 16 valves and has double VANOS . It differs from the N42 mainly in the lack of Valvetronic . The revised version N45N had u. a. a new engine control (like ME1745).

The N45B20S with a displacement of 2 liters occupies a special position. It was installed in the BMW E90 as a 320si. This special model was offered in 2006 as a homologation model for the WTCC in a limited edition (2600 pieces). The engine has some special features. The liners are made of an aluminum alloy and are inserted into the cylinder bore. With regular N45 / N46 engines, these are made of gray cast iron and are cast into the cylinder block. Other special features are the reinforced connecting rods and the bedplate crankcase (aluminum housing with gray cast iron inserts). The compression has been increased from 10.5: 1 to 11: 1. The cast blanks for the cylinder head are made in the Formula 1 foundry at BMW's Landshut plant . Because of the high thermal loads in racing, the coolant channels of the cylinder head were designed to be particularly large and the water cooler of the six-cylinder models was used. In addition, the N45B20S has specially coated rocker arms and spark plugs controlled by individual ignition coils . The engine was largely made by hand at the Hams Hall engine plant .

Data

Engine type Displacement Bore × stroke Valves / cyl. compression Power at 1 / min Torque at 1 / min Maximum speed construction time
N45B16 1.6 l (1596 cm 3 ) 84 mm × 72 mm 4th 10.5: 1 85 kW (116 hp) at 6000 150 Nm at 4300 6500 min −1 2003-2007
N45NB16 since 2007
N45B20S 2.0 l (1997 cm 3 ) 85 mm × 88 mm 4th 11: 1 127 kW (173 hp) at 7000 200 Nm at 4250 7300 min -1 2006

use

N45B16

  • 1.6 liters (1596 cc).
  • 85 kW (116 PS), 150 Nm
    • 09 / 2003–05 / 2006 in the E46 316Ci Coupé (not available in Germany)
    • 09 / 2003–05 / 2006 in the E46 316ti Compact (not available in Germany)
    • 03 / 2004–03 / 2007 in the E87 116i
    • 03 / 2005–03 / 2007 in the E90 316i (not available in Germany)

N45NB16

  • 1.6 liters (1596 cc).
  • 85 kW (116 PS), 150 Nm
    • since 03/2007 in the E87 116i (in Germany 09/2007 replaced by N43 )
    • since 03/2007 in the E90 316i (not available in Germany)

N45B20S

  • 2.0 liters (1997 cm³).
  • 126 kW (173 PS), 200 Nm
    • 2006 in the E90 320si (limited edition)

Individual evidence

  1. ↑ http://www.mobile.de/modellverzeichnis/bmw/320si.html
  2. ↑ http://www.krone.at/Motor/Renntiert_er_sich-BMW_320si_Die_Gene_sind_willig-Story-62222
  3. ↑ http://de.bmwfans.info/parts/catalog/E87/5-doors/Europe/116i-N45/LHD/N/
  4. ↑ http://www.ultimatespecs.com/?option=4&brand=11&model=802&car=4918
  5. ↑ http://auto.freenet.de/news/neuheiten/bmw-320si-rennbenzin-im-blut_195046_553858.html
Timeline of BMW gasoline engines for passenger cars since 1961
Number of cylinders Conception 1960s 1970s 1980s 1990s 2000s 2010s
0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th
3 1.5 l B38
4th (1.5–2.0 l) M10
M40
M42
M43
M44
N40
N42
N45
N46
N43
N13
N20
B48
High performance motor S14
6th Small six-cylinder (2.0-3.0 l) M20
M50
M52
M54
Large six-cylinder (2.5-3.5 l) M30
N52
N53
N54
N55
B58
High performance motor M88
S38
S50
S52
S54
S55
8th 3.0-4.4 l M60
M62
N62
N63
High performance motor S62
S63
S65
10 High performance motor S85
12 5.0-6.6 l M70
M73
N73
N74
High performance motor S70
Number of cylinders Conception 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th
1960s 1970s 1980s 1990s 2000s 2010s