BMW N52 engine | |
---|---|
![]() | |
Overview | |
Production | 2004–2015 |
Layout | |
Configuration | Straight-6 |
Displacement | 2,497 cc (152 cu in) 2,996 cc (183 cu in) |
Cylinder bore | 82 mm (3.2 in) 85 mm (3.3 in) |
Piston stroke | 78.8 mm (3.10 in) 88 mm (3.5 in) |
Cylinder block material | Magnesium-Aluminium |
Cylinder head material | Aluminium |
Valvetrain | DOHC, with VVT & VVL |
Combustion | |
Fuel type | Petrol |
Chronology | |
Predecessor | BMW M54 |
Successor | BMW N53 |
The BMW N52 is a naturally aspirated straight-6 petrol engine which was produced from 2004 to 2015. The N52 replaced the BMW M54 and debuted on the E90 3 Series and E63 6 Series.
The N52 was the first water-cooled engine to use magnesium/aluminium composite construction in the engine block. [1] It was also listed as one of Ward's 10 Best Engines in 2006 and 2007. [2] [3] [4]
In European markets, the N52 began to be phased out in favor of its direct injected version, the BMW N53 in 2007. Markets such as the United States, Canada, Australia and Malaysia retained the N52 as the N53 was deemed unsuitable due to the high sulphur content of local fuel. [5]
The N52 and N53 are the last naturally aspirated straight-six engines produced by BMW, ending a history of continuous production of this engine configuration since the BMW M30 in 1968. In 2011, the N52 began to be replaced by the BMW N20 turbocharged four-cylinder engine. N52 production ceased in 2015. [6]
Unlike its predecessors, there is no BMW M version of the N52.
Compared with its M54 predecessor, the N52 features Valvetronic (variable valve lift), [7] a lighter block due to the use of a magnesium alloy [8] and an electric water pump (replacing the belt-driven water pump) [9] [10] and a variable output oil pump. [11] The redline was increased from 6,500 rpm to 7,000 rpm, except for N52B25 (130 kW). [12]
Like the M54, the N52 uses electronic throttle control and variable valve timing (double-VANOS). Higher output versions of the N52 use a three-stage variable length intake manifold (also called "DISA"). [13] [14]
The N52 engine block is made from a combination of magnesium and aluminium. [12] Magnesium is lighter than aluminium, however it has a greater risk of corrosion from water and may creep under load at high temperatures; this makes traditional magnesium alloys not suited for withstanding the high loads to which an engine block is exposed. Therefore, BMW used a magnesium alloy for the crankcase shell, with an aluminum 'inner block' to overcome the limitations of magnesium alloys. [11] [15] The cylinder liners are made of Alusil. [16] The N52 debuted with solid cast intake and exhaust camshafts, but during production hollow "hydro-formed" camshafts were phased in to reduce weight. [11] Some engines came from the factory equipped with one solid and one hollow camshaft as the solid shaft was being phased out. Engine performance is not affected by installation of mixed camshafts.
The engine control unit (also called "DME") is a Siemens MSV70. [12]
Engine | Displacement | Power | Torque | Years |
---|---|---|---|---|
N52B25 | 2,497 cc (152.4 cu in) | 130 kW (174 bhp) at 5,800 rpm | 230 N⋅m (170 lb⋅ft) at 3,500-5,000 rpm | 2005-2008 |
150 kW (201 bhp) at 6,400 rpm | 250 N⋅m (184 lb⋅ft) at 2,750 rpm | 2007-2011 | ||
160 kW (215 bhp) at 6,500 rpm | 250 N⋅m (184 lb⋅ft) at 2,750-4,250 rpm | 2004-2013 | ||
N52B30 | 2,996 cc (182.8 cu in) | 160 kW (215 bhp) at 6,100 rpm | 270 N⋅m (199 lb⋅ft) at 2,500-4,250 rpm | 2006-2010 |
280 N⋅m (207 lb⋅ft) at 2,500-3,500 rpm | 2010-2011 | |||
170 kW (228 bhp) at 6,500 rpm | 270 N⋅m (199 lb⋅ft) at 2,750 rpm | 2007-2013 | ||
180 kW (241 bhp) at 6,500 rpm | 310 N⋅m (229 lb⋅ft) at 2,750 rpm | 2008-2011 | ||
190 kW (255 bhp) at 6,600 rpm | 300 N⋅m (221 lb⋅ft) at 2,500-4,000 rpm | 2010-2011 | ||
190 kW (255 bhp) at 6,600 rpm | 310 N⋅m (229 lb⋅ft) at 2,600 rpm | 2009-2015 | ||
195 kW (261 bhp) at 6,600 rpm | 315 N⋅m (232 lb⋅ft) at 2,750-4,250 rpm | 2005-2009 | ||
200 kW (268 bhp) at 6,650 rpm | 315 N⋅m (232 lb⋅ft) at 2,750 rpm | 2006-2010 |
130 kW (174 bhp) Applications: [17] [18]
150 kW (201 bhp) Applications:
160 kW (215 bhp) Applications:
The 3.0 L (183 cu in) models of the N52 have a bore of 85 mm (3.35 in), a stroke of 88 mm (3.46 in) and a compression ratio of 10.7:1. Variations in power output are often due to different intake manifolds and variations of engine management software. [19]
160 kW (215 bhp) Applications: [20]
170 kW (228 bhp) Applications:
180 kW (241 bhp) Applications: [21] [22]
190 kW (255 bhp) Applications: [23]
195 kW (261 bhp) Applications:
200 kW (268 bhp) Applications: [24]
The N51 engine is a SULEV version of the N52 that was sold in parts of the United States that had SULEV legislation. [25] Differences to the N52 versions include a variable-length intake manifold ("DISA") with three stages instead of one, and a compression ratio lowered from 10.7:1 to 10.0:1. [26]
The fifth generation of the BMW 3 Series range of compact executive cars is designated under the model codes E90 (saloon), E91, E92 (coupé) and E93 (convertible). The model was introduced in December 2004, and produced by BMW until October 2013 and is often collectively referred to as the E90 or E9x.
The fifth generation of the BMW 5 Series executive cars consists of the BMW E60 and BMW E61. The E60/E61 generation was produced by BMW from 2003 to 2010 and is often collectively referred to as the E60.
The BMW M54 is a naturally aspirated straight-6 DOHC petrol engine produced from 2000 to 2006. It was released in the E53 X5 and is the replacement for the M52 engine. The S54 is the equivalent high performance engine, used in the E46 M3, the Z3 M Coupé/Roadster and the E85/E86 Z4 M. The BMW M56 SULEV engine is based on the M54.
The BMW N62 is a naturally aspirated V8 petrol engine which was used in BMW cars from 2001–2010. It also remained in small-scale production for the Morgan Aero until 2019. The N62 is the world's first engine to use a continuously variable-length intake manifold, and BMW's first V8 to feature variable valve lift.
iDrive is an in-car communications and entertainment system, used to control most secondary vehicle systems in late-model BMW cars. It was launched in 2001, first appearing in the E65 7 Series. The system unifies an array of functions under a single control architecture consisting of an LCD panel mounted in the dashboard and a control knob mounted on the center console.
BMW M GmbH, formerly known as BMW Motorsport GmbH, is a subsidiary of BMW AG that manufactures performance cars.
The BMW M57 is a straight-6 diesel engine produced from 1998 up to 2013 in BMW's upper Austrian engine plant in Steyr.
The BMW S85B50 is a naturally aspirated V10 petrol engine which replaced the BMW S62 V8 engine in the M5 model and was produced from 2005–2010. It was both BMW's first and only production V10 engine, and the first petrol V10 engine to be available in a production sedan (saloon).
The BMW N54 is a twin-turbocharged straight-six petrol engine that was produced from 2006 to 2016. It is BMW's first mass-produced turbocharged petrol engine and BMW's first turbocharged petrol engine since the limited-production BMW M106 was discontinued in 1986. The N54 debuted at the 2006 Geneva Motor Show and was launched in the 335i model of the E90/E91/E92/E93 3 Series range.
The BMW N46 is a naturally aspirated inline-four piston engines which replaced the BMW N42 and was produced from 2004 to 2015.
The BMW N53 is a naturally aspirated straight-6 petrol engine which was produced from 2006 to 2013. The N53 replaced the BMW N52 in certain markets and debuted on the post-facelift E60 5 Series.
The BMW S65 is a naturally aspirated V8 petrol engine which was produced from 2007 to 2013. Its main use was in the BMW M3. There is no direct replacement for the S65, since the following generation of M3 switched to a turbocharged straight-six engine.
BMW cars have been officially sold in the United States since 1956 and manufactured in the United States since 1994. The first BMW dealership in the United States opened in 1975. In 2016, BMW was the twelfth highest selling brand in the United States. The North American headquarters for BMW is located at 300 Chestnut Ridge Road, Woodcliff Lake, Bergen County, New Jersey.
The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009. The N55 replaced the BMW N54 engine and was introduced in the F07 5 Series Gran Turismo.
The BMW N43 is a naturally aspirated four-cylinder petrol engine which was sold from 2006 to 2013. It replaced both the BMW N46 and BMW N45 engines. However the N43 was not sold in countries with high sulfur fuel, therefore the N45/N46 engines remained in production alongside the N43.
BMW N47 is a four-cylinder common rail diesel engine that has many improvements over its predecessor, the M47. In 2014 it was replaced with the B47. The USA market never received B47 engine. The only B engine in the US for a diesel was a B57 in 2018 540d. The newest 4 cylinder diesel in the US was N47TU.
The BMW M60 is a naturally aspirated V8 petrol engine which was produced from 1992 to 1996. It was BMW's first V8 engine in over 25 years.
The BMW N20 is a 1.6 and 2.0 L turbocharged four-cylinder DOHC petrol engine with variable valve lift and variable valve timing which replaced the N53 and was produced from 2011 to 2017 by BMW. Although the N20 is a four-cylinder engine, it is considered a replacement for the naturally aspirated six-cylinder N52/N53 because it powers equivalent models, producing similar horsepower to the N52/N53 with greater low-rpm torque and better efficiency.
The ZF S6-37 is a 6-speed manual transmission manufactured by ZF Friedrichshafen AG. It is designed for longitudinal engine applications, and is rated to handle up to 370 newton-metres (273 lbf⋅ft) of torque.
The ZF S6-53 is a 6-speed manual transmission manufactured by ZF Friedrichshafen AG. It is designed for longitudinal engine applications, and is rated to handle up to 600 newton-metres (443 lbf⋅ft) of torque.
Note: Web page still active, but image links are broken in the current version