Mercedes-Benz M279 engine

Last updated
Mercedes-Benz M277/M279
Mercedes M279 engine.png
Overview
Manufacturer Mercedes-Benz
Production2012 – present
Layout
Configuration 60° V12
Displacement 6.0 L (5,980 cc)
Cylinder bore 82.6 mm (3.25 in)
Piston stroke 93 mm (3.66 in)
Cylinder block material Aluminium alloy
Cylinder head materialAluminium alloy
Valvetrain SOHC 3 valves x cyl. with VVT
Compression ratio 9.0:1
Combustion
Turbocharger Twin-turbo
Fuel system Port injection
Fuel type Gasoline
Cooling system Water cooled
Output
Power output 390–463 kW (530–630 PS; 523–621 hp)
Torque output 830–1,000 N⋅m (612–738 lb⋅ft)
Dimensions
Dry weight 246 kg (542 lb)
Chronology
Predecessor Mercedes-Benz M275

The M279 and M277 are a series of twin-turbocharged V12 engines produced by Mercedes-Benz. It was launched in 2012 with the R231 SL65 AMG. [1]

Contents

Design

The M279 is based on the previous generation M275 engine, but has been extensively revised. [2] It now features port injection,[ clarification needed ] larger turbochargers, changes to the valvetrain timing, and a new exhaust system for improved efficiency and emissions. [3] The M279 also uses single overhead camshafts with 3 valves per cylinder, and has an identical bore and stroke compared to before. [4]

M277/M279

In 2012, Mercedes-Benz delivered all the rights of V12 engine development to AMG for future V12-model vehicles. [5] Starting the 2014 model year, M279 has been extensively redesigned and updated their top-of-the-range V12 engine to better conform to increasing emission standards in Europe and the United States. Despite the basic design being more than 16 years old (M137), the new engine has enough modifications and sporting character that the engineers felt it warranted a new engine designation. According to Mercedes-Benz, the most important features of the new engine are:

- Increased displacement to 6.0 L (5,980 cc)
- New forged pistons and forged crankshaft in high-grade quenched, tempered steel
- New Engine Control Unit
- New Ignition system
- New Camshafts
- Hollow-stem sodium outlet valves
- Low-temperature cooling-water circulation system with separate expansion reservoir. [6]

With these modifications and the addition of Mercedes-Benz's 7G-Tronic transmission on the V12 models, it is estimated that fuel economy will rise about 21% on the European cycle for the large-bodied Mercedes vehicles. Power is now at 530 PS (390 kW; 523 hp) and torque figures stay the same as the predecessor at 830 N⋅m (612 lb⋅ft).

Applications:

M279 AMG

The M279 AMG is based on the new and comprehensively revised M279 engine series, specially tuned for AMG 65 and Maybach 650 models. In addition to that engine's updates from the previous M275, M279 utilizes new turbochargers with an increased spiral cross-section, new exhaust manifolds, new wastegate ducts, and new cylinder heads with optimized flow characteristics to increase the engine output to 630 PS (463 kW; 621 hp) and still 1,000 N⋅m (738 lb⋅ft) of torque. The multi-spark ignition with twelve double ignition coils and a new higher performing engine management system not only results in smoother running, but also enables even more effective combustion. The effects of this is a reduction of exhaust emissions, which is also due in large extent to the optimized catalytic converter system. The newly developed AMG sports exhaust system, which has a pipe layout with enhanced flow characteristics and only equipped in the AMG models, is 3.2 kg (7.1 lb) lighter as a result of a reduction in the wall thickness. For the first time in a Mercedes-Benz passenger vehicle, the V12 is mated to a 4MATIC all-wheel-drive system in the 2021 Maybach S 680.

Applications:

Models

EnginePowerTorqueYears
M277 E60 LA390 kW (530 PS; 523 hp)
@ 4,900–5,300 rpm		830 N⋅m (612 lb⋅ft)
@ 1,900–4,000 rpm		2014–2019
M279 E60 LA450 kW (612 PS; 603 hp)
@ 4,300–5,600 rpm		1,000 N⋅m (738 lb⋅ft)
@ 2,300–4,300 rpm		2012–
463 kW (630 PS; 621 hp)
@ 4,800–5,400 rpm		1,000 N⋅m (738 lb⋅ft)
@ 2,300–4,300 rpm
450 kW (612 PS; 603 hp)
@ 4,300–5,600 rpm		900 N⋅m (664 lb⋅ft)
@ 2,300–4,300 rpm		2021–

M277 E60 LA (390 kW version)

M279 E60 LA (450 kW version)

M279 E60 LA (463 kW version)

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References

  1. ↑ "2013 Mercedes-Benz SL65 AMG". MotorTrend. 20 March 2012. Retrieved 2018-07-03.
  2. ↑ "Introduction of the New V12 Biturbo Engine M 279 AMG" (PDF). autocats.ws. Retrieved 2018-07-03.
  3. ↑ "2013 Mercedes-Benz SL65 AMG". Road & Track. 2012-04-04. Retrieved 2018-07-03.
  4. ↑ "MY14 SL-Class Specifications" (PDF). mbusa.com. Retrieved 2018-07-03.
  5. ↑ "Mercedes-Benz handing off all V12 development to AMG". 22 August 2012.
  6. ↑ "The New Mercedes-Benz M277 V12 in the S 600 at a Glance". 13 January 2014.
  7. ↑ "Mercedes-Benz Car Configurator".
  8. ↑ "FIRST DRIVE: Merc's monster S600 L, S65 AMG". Wheels. Retrieved 2018-07-03.
  9. ↑ "Future Strategy For Mercedes V-12 Engines Lies With AMG". Motor Authority. Retrieved 2018-07-03.
  10. ↑ "Mercedes S600 is a twin-turbo V12 limo". Top Gear. 2014-01-14. Retrieved 2018-07-03.
  11. ↑ "Mercedes-Benz Talks AMG Future, Celebrates 45 Years Of Performance Brand". Motor Authority. Retrieved 2018-07-03.
  12. ↑ "2013 Mercedes SL65 AMG @ Top Speed". Top Speed. Retrieved 2018-07-03.
  13. ↑ Kable, Greg (2016-10-03). "Mercedes-AMG S65 cabriolet revealed". Drive. Retrieved 2018-07-03.
  14. ↑ "Get Ready To Say Goodbye To Mercedes-AMG Using V12 Engines". Motor1.com. Retrieved 2018-07-03.
  15. ↑ "2017 Mercedes-AMG S65 Cabriolet Revealed!". Car and Driver. Retrieved 2018-07-03.
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