BMW N53
| BMW N53 engine | |
|---|---|
 | |
| Overview | |
| Manufacturer | BMW, Bayerische Motoren Werke AG |
| Production | 2007–2014 |
| Combustion chamber | |
| Configuration | Straight 6 |
| Chronology | |
| Predecessor | BMW N52 |
| Successor | BMW N20, BMW N55 |
The BMW N53 is a straight 6 DOHC piston engine which was produced from 2007 to 2011. It was released in 2007 in the facelifted BMW 5 Series (E60/E61) and the BMW 3 Series (E90/E91/E92/E93). Compared with its N52 predecessor which was port-injected, the N53 uses direct injection (consisting of Piëzo-electric injectors directly in the cylinder) with a stratified lean mixture operation.[1][2]
The N53 has variable valve timing (called double vanos by BMW). Unlike the N52, the N53 does not contain variable valve lift (called valvetronic by BMW) due to space limitations in the cylinder head.[3][4]
BMW never used the N53 engine in North American, Australian and Malaysian vehicles, due to the high sulphur content of the fuel available in these markets.[5] These regions continued to use the N52 port-injected naturally-aspirated and N54 direct-injection twin-turbo inline-6 engines for the 2007-2011 model years
The N53 was replaced by the N55 straight-6 and N20 straight-4 engines, both being directly-injection and with single twin-scroll turbochargers.
Models
| Engine Code | Displacement | Power | Torque | Bore | Stroke | Compression | Year |
|---|---|---|---|---|---|---|---|
| N53B25-U0 | 2,497 cc (152 cu in) | 140 kW (190 hp) @ 6100 rpm | 235 N·m (173 lb·ft) @ 3500-5000 rpm | 82.0 | 78.8 | 12.0:1 | 2007 |
| N53B30 | 2,996 cc (183 cu in) | 150 kW (200 hp) @ 6700 rpm | 270 N·m (200 lb·ft) @ 1500-4250 rpm | 85.0 | 88.0 | 12.0:1 | 2010 |
| N53B30-U0 | 160 kW (210 hp) @ 6100 rpm | 270 N·m (200 lb·ft) @ 2400-4200 rpm | 85.0 | 88.0 | 12.0:1 | 2007 | |
| N53B30 | 200 kW (270 hp) @ 6100 rpm | 310 N·m (230 lb·ft) @ 1600-4250 rpm | 85.0 | 88.0 | 12.0:1 | 2010 | |
| N53B30-O0 | 200 kW (270 hp) @ 6700 rpm | 320 N·m (240 lb·ft) @ 2750-3000 rpm | 85.0 | 88.0 | 12.0:1 | 2007 |
N53B25-U0
The 2.5-litre N53B25-U0 is used in the E60/E61 523i [6] and produces 140 kW and 235 Nm.[4]
Applications:
- 2007-2010 E60 523i sedan
- 2007-2010 E61 523i touring
N53B30-U0
The E90/E91/E92 325i switched from the 2.5 litre N52 to the 3.0 litre N53B30-U0 in September 2007 (March 2007 for the E93). Despite the increased displacement, the maximum power remained unchanged at 160 kW,[4] and maximum torque has increased just enough to compensate for a longer differential final drive ratio as a result of a shorter useful range (maximum power is given in the N53B30-U0 at only 640 rad/s instead of the 700 rad/s of the older N52B25-OL)[citation needed].
Applications:
- 2007-2011 E90/E91/E92/E93 325i sedan/touring/coupe/convertible
- 2007-2010 E60/E61 525i sedan/touring
- 2010-2011 F10/F11 525i sedan/touring
N53B30-O0
The N53B30-O0 has improved maximum power to 272 bhp (203 kW) as well as maximum torque over the N52B30. The N53B30-O0 can be found in the 330i (E90/E91/E92/E93) and 530i (E60/E61).[4]
Applications:
- 2007-2011 E90/E91/E92/E93 330i sedan/touring/coupe/convertible
- 2007-2010 E60/E61 530i sedan/touring
- 2010-2013 F10 530i sedan
See also
- BMW N532
- BMW N54
- BMW engines
- BMW vehicles
References
- ↑ "WDS Wiring Diagram System". Wds.spaghetticoder.org. Retrieved 2012-08-05.
- ↑ http://metric.or.kr/Common/download/download_file.asp?dpath=thesis&fname=car-j-1906-0082.pdf
- ↑ "BMW Straight 6 Engine - N Series". BMWInformation.com. 2007. Archived from the original on 21 April 2008. Retrieved 2008-05-20.
- ↑ 4.0 4.1 4.2 4.3 "BMW Heaven Specification Database | Engine specifications for N53 engines". Bmwheaven.com. Retrieved 2012-08-05.
- ↑ http://paultan.org/2010/05/11/bmws-n52-versus-n53-what-are-we-missing/
- ↑ "BMW Engine Codes". 2007. Retrieved 2008-05-20.
| « previous — BMW road car engine timeline, 1980s-2000s — next » | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Family | 1980s | 1990s | 2000s | ||||||||||||||||||||||||||||||||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||||||||||
| 4-cylinder petrol | << M10 | M40 | M43 | N42 | N43 / N45 / N46 >> | ||||||||||||||||||||||||||||||||||||
| M42 | M44 | ||||||||||||||||||||||||||||||||||||||||
| S14 | |||||||||||||||||||||||||||||||||||||||||
| 6-cylinder petrol | << M20 | M50 | M52 | M54 / M56 | N52 | N53 >> | |||||||||||||||||||||||||||||||||||
| N54 | N55 >> | ||||||||||||||||||||||||||||||||||||||||
| S50 / S52 | S54 | ||||||||||||||||||||||||||||||||||||||||
| << M30 | |||||||||||||||||||||||||||||||||||||||||
| << M88 / M90 | S38 | ||||||||||||||||||||||||||||||||||||||||
| M102 | M106 | ||||||||||||||||||||||||||||||||||||||||
| 8-cylinder petrol | M60 | M62 | N62 | N63 >> | |||||||||||||||||||||||||||||||||||||
| S62 | |||||||||||||||||||||||||||||||||||||||||
| S65 >> | |||||||||||||||||||||||||||||||||||||||||
| 10-cylinder petrol | S85 | ||||||||||||||||||||||||||||||||||||||||
| 12-cylinder petrol | M70 | M73 | N73 | N74 >> | |||||||||||||||||||||||||||||||||||||
| S70 | |||||||||||||||||||||||||||||||||||||||||