Wikipedia

BMW N62

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.[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
Production2001-2010
Layout
ConfigurationNaturally aspirated 90° V8
Displacement3.6 L (3,600 cc)
4.0 L (4,000 cc)
4.4 L (4,398 cc)
4.8 L (4,799 cc)
Cylinder bore84 mm (3.31 in)
87 mm (3.43 in)
92 mm (3.62 in)
93 mm (3.7 in)
Piston stroke81.2 mm (3.20 in)
84.1 mm (3.31 in)
82.7 mm (3.26 in)
88.3 mm (3.48 in)
Cylinder block materialAluminium
Cylinder head materialAluminium
ValvetrainDOHC w/ VVT & VVL
Combustion
Fuel typePetrol
Chronology
PredecessorBMW M62
SuccessorBMW 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 edit

The N62 was a clean sheet design and not a direct evolution of the M60 engine line that evolved into the M62 engine. The N62 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, an aluminium cylinder head and offset fracture-split forged powdered metal connecting rods. 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 and for certain cold start conditions.[8] A vacuum pump is mounted to cylinder bank 1 to supply vacuum for the brake booster and secondary air injection ports.

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 it's shortest length at the engine's redline.

Applications:

The N62B48 engine used in the E53 X5 4.8is was a 4.8L variant of the N62B44 which still utilized many features of the N62B44 such as the DISA intake manifold.

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. Other changes include different exhaust manifolds, replacement of the DIVA continuously variable length intake manifold to a DISA two-stage manifold, removal of secondary air injection ports and several small changes to accommodate the longer stroke crankshaft such as more traditional non-offset connecting rods and a deeper oil pan. It also featured different spark plugs, oxygen sensors, engine computer and inlet and exhaust valves with a stem diameter decreased to 5mm from 6mm.

Applications:

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 edit

The 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:

N62B40 edit

The 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:

N62B44 edit

The 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:

N62B48 edit

The 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:

Applications- 265 kW version:

Applications- 270 kW version:

Alpina H1 edit

The 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

Applications- 390 kW

See also edit

References edit

  1. ^ "The Last Aero". Evo Australia. January 2019: 130.
  2. ^ 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.
  3. ^ "BMW E65 - Drive". www.drive-my.com. Archived from the original on January 7, 2021. Retrieved 3 June 2017.
  4. ^ 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.
  5. ^ "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.
  6. ^ "Previous Winners". www.ukimediaevents.com. Archived from the original on 24 November 2018. Retrieved 24 November 2018.
  7. ^ a b "BMW N62 V8 Engine". www.unixnerd.demon.co.uk. Archived from the original on 17 January 2020. Retrieved 1 July 2017.
  8. ^ a b "BMW N62 V8 Technical Information" (PDF). www.internetsomething.com. Retrieved 16 November 2022.
  9. ^ "BMW N62 V8 Technical Information". www.E90post.com. Retrieved 16 November 2022.
  10. ^ "BMW 735i E65 specifications". www.carfolio.com. Archived from the original on 12 August 2018. Retrieved 29 June 2017.
  11. ^ "2005 Morgan Aero 8 New Car Buyer's Guide". Autosite.com. Archived from the original on 20 September 2010. Retrieved 2010-09-13.
  12. ^ "Press release: Morgan announces 5th generation Aero 8" (PDF). Morgan. 2015. Archived (PDF) from the original on 2017-07-08. Retrieved 2017-01-27.
  13. ^ "ALPINA B5 Roadtest". www.fastsaloons.com. Archived from the original on 20 November 2018. Retrieved 20 November 2018.
  14. ^ 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.
  15. ^ 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.
  16. ^ "BMW 7 Series E65/66: ALPINA Automobiles". www.alpina-automobiles.com. Archived from the original on 20 June 2018. Retrieved 2 December 2018.
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