The BMW N62 is a naturally aspirated V8 petrol engine which was used in BMW cars from 2001 to 2010. It also remained in small-scale production for the Morgan Aero until 2019.[1] The N62 is the world's first engine to use a continuously variable-length intake manifold,[2] and BMW's first V8 to feature variable valve lift (called Valvetronic).[3][4][5]
| BMW N62 | |
|---|---|
 N62B48 in a E65 750i | |
| Overview | |
| Production | 2001-2010 |
| Layout | |
| Configuration | Naturally aspirated 90° V8 |
| Displacement | 3.6 L (3,600 cc) 4.0 L (4,000 cc) 4.4 L (4,398 cc) 4.8 L (4,799 cc) |
| Cylinder bore | 84 mm (3.31 in) 87 mm (3.43 in) 92 mm (3.62 in) 93 mm (3.7 in) |
| Piston stroke | 81.2 mm (3.20 in) 84.1 mm (3.31 in) 82.7 mm (3.26 in) 88.3 mm (3.48 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC w/ VVT & VVL |
| Combustion | |
| Fuel system | Port injected |
| Fuel type | Petrol |
| Chronology | |
| Predecessor | BMW M62 |
| Successor | BMW N63 |
Unlike its predecessor and successor, there was no M version of the N62.
In the International Engine of the Year awards in 2002, the N62 was awarded "International Engine of the Year", "Best New Engine" and "Above 4-litre" categories.[6]
Design
editThe N62 was a clean sheet design and not a direct evolution of the M60 engine line that evolved into the M62 engine. The N62 4.4L has a bore of 92 mm (3.6 in) and stroke of 82.7 mm (3.26 in) for a total displacement of 4,398cc and features double-VANOS variable valve timing on both the intake and exhaust camshafts (the M62 features variable valve timing on only the intake camshaft).[7] As per the M62, the N62 has double overhead camshafts (DOHC) with four valves per cylinder, an aluminium engine block and an aluminium cylinder head. The N62 4.4 featured offset fracture-split forged powdered metal connecting rods and it was also the first V8 and only the second BMW engine to feature Valvetronic technology which on the N62 varies the valve lift of the engine from .03mm to 9.85mm.[8] The redline is 6500 rpm.[4] Valvetronic technology allows for variable valve timing, variable lift and variable duration and the N62 adjusts the lift instead of utilizing the throttle body during normal operation. The engine does feature a throttle body but this is only used for emergency applications in the event of Valvetronic failure, for certain cold start conditions and to maintain a set amount of vacuum in the intake during low load conditions such as cruising on the highway or idling. The vacuum pump mounted on the bank 1 cylinder head only supplies the brake booster and certain auxiliaries with vacuum, making the use of the standard TB for manifold vacuum control a requirement for proper functioning of the crankcase ventilation system as well as the fuel evap valve and other emissions related systems.[8]
The N62B44 is the only production engine in the world to feature a continuously variable length intake manifold known as the DIVA intake (not to be confused with the DISA intake as used on many other BMW production engines). The intake length path begins to shorten at 3,500 RPM and is progressively shortened until it reaches its shortest length at the engine's redline. This maximizes torque throughout the RPM range, producing a much broader torque curve and more peak HP.
Applications:
- 2004-2005 BMW 5 Series (E60) 545i
- 2004-2005 BMW 6 Series (E63) 645Ci
- 2001-2004 BMW 7 Series (E65) 745i/745Li
- 2004-2006 BMW X5 (E53) X5 4.4i and 4.8is
The N62B48 engine used in the E53 X5 4.8is was a 4.8L variant of the N62B44 which shared many components with the N62B44 including the DIVA intake which was replaced when the engine was evolved to the N62TU. The oil pan was modified and deepened to account for the longer stroke crankshaft, this change was applied to all N62's in October 2003. Other changes were made to accommodate the longer stroke crankshaft such as more traditional non-offset connecting rods.
The N62B44 was evolved into the N62B48TU beginning in model year 2005.[9] The N62B48 featured several changes over the N62B44, including an increase in the bore size to 93 mm (3.7 in) and stroke to 88.3 mm (3.48 in) which increased the displacement to 4798.52 cc. All changes made for the E53's 4.8L version of the engine were used in the production N62TU. Other changes include a different exhaust manifold on bank 2, improved catalytic converters, new pre-cat oxygen sensors, new MAF, updated engine management unit, replacement of the DIVA continuously variable length intake manifold to a DISA two-stage manifold, removal of secondary air injection ports, different spark plugs and inlet and exhaust valves with a stem diameter decreased to 5mm from 6mm.
Applications:
- 2005-2010 BMW 5 Series (E60) 550i
- 2005-2010 BMW 6 Series (E63) 650i
- 2005-2008 BMW 7 Series (E65) 750i/750Li
- 2007-2010 BMW X5 (E70) X5 4.8i
Versions
edit| Engine | Displacement | Power | Torque | Year |
|---|---|---|---|---|
| N62B36 | 3,600 cc (219.7 cu in) | 200 kW (268 hp) at 6,200 rpm |
360 N⋅m (266 lb⋅ft) at 3,700 rpm |
2001 |
| N62B40 | 4,000 cc (244.1 cu in) | 225 kW (302 hp) at 6,300 rpm |
390 N⋅m (288 lb⋅ft) at 3,500 rpm |
2005 |
| N62B44 | 4,398 cc (268.4 cu in) | 235 kW (315 hp) at 6,100 rpm |
440 N⋅m (325 lb⋅ft) at 3,700 rpm |
2003 |
| 245 kW (329 hp) at 6,100 rpm |
450 N⋅m (332 lb⋅ft) at 3,600 rpm |
2001 | ||
| N62B48 | 4,799 cc (292.9 cu in) | 265 kW (355 hp) at 6,200 rpm |
500 N⋅m (369 lb⋅ft) at 3,500 rpm |
2004 |
| 261 kW (350 hp) at 6,300 rpm |
475 N⋅m (350 lb⋅ft) at 3,400 rpm |
2005 | ||
| 270 kW (362 hp) at 6,300 rpm |
490 N⋅m (361 lb⋅ft) at 3,400 rpm |
2005 | ||
| H1 | 4,398 cc (268.4 cu in) | 368 kW (493 hp) at 5,500 rpm |
700 N⋅m (516 lb⋅ft) at 3,500 rpm |
2007 |
| 390 kW (523 hp) at 5,500 rpm |
725 N⋅m (535 lb⋅ft) at 4,750 rpm |
2007 |
N62B36
editThe N62B36 is a 3,600 cc (219.7 cu in) version. Bore is 84 mm (3.3 in) and stroke is 81.2 mm (3.2 in). It produces 200 kW (270 hp) at 6,200 rpm and 360 N⋅m (270 lb⋅ft) at 4,250 rpm.[4][10]
Applications:
- 2001-2005 E65/E66 735i/735Li
N62B40
editThe N62B40 is a 4,000 cc (244.1 cu in) version. Bore is 87 mm (3.4 in) and stroke is 84.1 mm (3.3 in). It produces 225 kW (302 hp) at 6,300 rpm and 390 N⋅m (290 lb⋅ft) at 3,500 rpm.[4][7]
Applications:
- 2005-2010 E60/E61 540i sedan and touring
- 2005-2008 E65/E66 740i/740Li sedan
N62B44
editThe N62B44 is a 4,398 cc (268.4 cu in) version. Bore is 92 mm (3.6 in) and stroke is 82.7 mm (3.3 in). It produces 245 kW (329 hp) at 6,100 rpm and 450 N⋅m (330 lb⋅ft) at 3,600 rpm. (except for in the X5 model).
Applications:
- 2001-2005 E65/E66 745i/745Li
- 2003-2006 E53 X5 4.4i- 235 kW (315 hp) at 6100 rpm and 440 N⋅m (325 lb⋅ft) at 3700 rpm
- 2003-2005 E60/E61 545i
- 2003-2005 E63/E64 645Ci
- 2005-2007 Morgan Aero 8 Series 2 and Series 3[11]
N62B48
editThe N62B48 has a displacement of 4,799 cc (292.9 cu in), a bore of 93 mm (3.7 in) and a stroke of 88.3 mm (3.5 in).
Applications- 261 kW version:
- 2007–2010 E70 X5 4.8i SAV
Applications- 265 kW version:
- 2003–2011 Wiesmann GT MF4 / Roadster MF4
- 2004-2006 E53 X5 4.8iS SAV
Applications- 270 kW version:
- 2005-2010 E60/E61 550i sedan and touring
- 2005–2010 E63/E64 650i coupé and convertible
- 2005-2008 E65/E66 750i/750Li
- 2008–2010 Morgan Aero 8 Series 4, Series 5, Aeromax, and Aero Coupe[12]
- 2010–2015 Morgan Aero SuperSports
Alpina H1
editThe H1 is a version of the N62B44 made by Alpina. The H1 is based on an N62B44 block with a forged crankshaft from Alpina, high strength Mahle pistons and the addition of an ASA centrifugal supercharger.[13] The H1 has a redline of 6,200 rpm.
Applications- 368 kW
- 2005–2007 in the Alpina B5 (E60/E61)[14]
- 2006–2007 in the Alpina B6 (E63)[15]
- 2003–2008 in the Alpina B7 (E65)[16]
Applications- 390 kW
- 2007–2010 in the Alpina B5 S (E60/E61)[14]
- 2007–2010 in the Alpina B6 S (E63)[15]
See also
editReferences
edit- ^ "The Last Aero". Evo Australia. January 2019: 130.
- ^ Hirschfelder, Klaus; Völkl, Werner; Kühnel, Hans-Ulrich; Sinn, Walther; Huck, Armin (March 2002). "The first continuously variable intake system in the new eight-cylinder engine from BMW". MTZ Worldwide. 63 (3): 2–6. doi:10.1007/bf03227525. ISSN 2192-9114.
- ^ "BMW E65 - Drive". www.drive-my.com. Archived from the original on January 7, 2021. Retrieved 3 June 2017.
- ^ a b c d "BMW Heaven Specification Database | Engine specifications for N62 engines". Archived from the original on 2015-09-23. Retrieved 2012-08-19.
- ^ "BMW Engines: From M to N – Part 2". www.bmwblog.com. 2008-12-27. Archived from the original on 2021-10-06. Retrieved 27 June 2017.
- ^ "Previous Winners". www.ukimediaevents.com. Archived from the original on 24 November 2018. Retrieved 24 November 2018.
- ^ a b "BMW N62 V8 Engine". www.unixnerd.demon.co.uk. Archived from the original on 17 January 2020. Retrieved 1 July 2017.
- ^ a b "BMW N62 V8 Technical Information" (PDF). www.internetsomething.com. Retrieved 16 November 2022.
- ^ "BMW N62 V8 Technical Information". www.E90post.com. Retrieved 16 November 2022.
- ^ "BMW 735i E65 specifications". www.carfolio.com. Archived from the original on 12 August 2018. Retrieved 29 June 2017.
- ^ "2005 Morgan Aero 8 New Car Buyer's Guide". Autosite.com. Archived from the original on 20 September 2010. Retrieved 2010-09-13.
- ^ "Press release: Morgan announces 5th generation Aero 8" (PDF). Morgan. 2015. Archived (PDF) from the original on 2017-07-08. Retrieved 2017-01-27.
- ^ "ALPINA B5 Roadtest". www.fastsaloons.com. Archived from the original on 20 November 2018. Retrieved 20 November 2018.
- ^ a b "BMW 5 Series E60/61: ALPINA Automobiles". www.alpina-automobiles.com. Archived from the original on 2018-10-06. Retrieved 2018-12-02.
- ^ a b "BMW 6 Series E63/64: ALPINA Automobiles". www.alpina-automobiles.com. Archived from the original on 28 October 2017. Retrieved 2 December 2018.
- ^ "BMW 7 Series E65/66: ALPINA Automobiles". www.alpina-automobiles.com. Archived from the original on 20 June 2018. Retrieved 2 December 2018.