|BMW N53 engine|
|Manufacturer||BMW, Bayerische Motoren Werke AG|
|Successor||BMW N20, BMW N55|
The BMW N53 is a straight 6 DOHC piston engine which was produced from 2006 to 2011. It is the final naturally aspirated straight-6 engine produced by BMW, ending a history of continuous production of this engine configuration since 1968. The N53 released in 2006 in the facelifted E60/E61 523i and 525i. Following the introduction of the N20 turbocharged straight-4 engine in 2011, the N53 began to be phased out. The N54 turbocharged straight-6 engine was produced alongside the N53, therefore the N54 took over as the highest performance six-cylinder engine.
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. The N53 has variable valve timing on both camshafts(called double vanos by BMW) and a magnesium alloy block. Unlike the N52, the N53 does not contain variable valve lift (called valvetronic by BMW), due to space limitations in the cylinder head.
BMW never sold the N53 engine in North American, Australian and Malaysian vehicles, due to the high sulphur content of the fuel available in these markets. 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.
|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||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||2010|
|N53B30-U0||160 kW (210 hp) @ 6100 rpm||270 N·m (200 lb·ft) @ 2400-4200 rpm||85.0||88.0||12.0||2007|
|N53B30||200 kW (270 hp) @ 6100 rpm||310 N·m (230 lb·ft) @ 1600-4250 rpm||85.0||88.0||12.0||2010|
|N53B30-O0||200 kW (270 hp) @ 6700 rpm||320 N·m (240 lb·ft) @ 2750-3000 rpm||85.0||88.0||12.0||2007|
- 2006-2010 E60/E61 523i
The N53B30-O0 increased power to 200 kW (270 hp) and torque to 320 N·m (240 lb·ft).
- http://metric.or.kr/Common/download/download_file.asp?dpath=thesis&fname=car-j-1906-0082.pdf[dead link]
- "BMW N53B25 Engine". mywikimotors.com.
- "BMW Straight 6 Engine - N Series". BMWInformation.com. Archived from the original on 21 April 2008.
- "Engine specifications for N53 engines". www.bmwheaven.com.
- "BMW's N52 versus N53 - what are we missing?". paultan.org.
- "BMW Engine Codes". racingdynamics.com.
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