Mercedes-Benz M273 engine
The Mercedes-Benz M273 engine is a V8 automobile piston engine family used in the 2000s (decade). It was based on the similar M272 V6 introduced in 2004.
| Mercedes-Benz M273 | |
|---|---|
 | |
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 2006–2013 |
| Layout | |
| Configuration | Naturally aspirated 90° V8 |
| Displacement | 4.7 L (4,663 cc) 5.5 L (5,461 cc) |
| Cylinder bore | 92.9 mm (3.66 in) 98 mm (3.86 in) |
| Piston stroke | 86 mm (3.39 in) 90.5 mm (3.56 in) |
| Block material | Aluminium |
| Head material | Aluminium |
| Valvetrain | DOHC 4 valves x cyl. and continuous VVT |
| Combustion | |
| Fuel system | Sequential fuel injection |
| Fuel type | Gasoline |
| Cooling system | Water cooled |
| Output | |
| Power output | 250–285 kW (340–387 PS; 335–382 hp) |
| Torque output | 460–530 N⋅m (339–391 lb⋅ft) |
| Chronology | |
| Predecessor | Mercedes-Benz M113 |
| Successor | Mercedes-Benz M278 |
An evolution of the M113 V8,[1] all M273s have aluminium engine blocks, sequential fuel injection, forged steel connecting rods, a one-piece cast camshaft, and a magnesium intake manifold. The cylinders are lined with silicon/aluminium, and a dual-length Variable Length Intake Manifold is fitted.
In addition to this, new features shared with the M272 include DOHC aluminium cylinder heads, 4 valves per cylinder and independent continuously variable valve timing on both the intake and exhaust sides. A new electronically controlled cooling system has eliminated the need for a mechanical thermostat for improved engine warm-up and optimum control of engine temperature.
E47
The E47 is a 4.7 L (4,663 cc) version. Bore and stroke is 92.9 mm × 86 mm (3.66 in × 3.39 in). Output is 250 kW (340 PS; 335 hp) at 6000 rpm with 460 N⋅m (339 lb⋅ft) of torque at 2700-5000 rpm.
Applications:
E55
The E55 is a 5.5 L (5,461 cc) version. Bore and stroke increased to 98 mm × 90.5 mm (3.86 in × 3.56 in). Output is 285 kW (387 PS; 382 hp) at 6000 rpm with 530 N⋅m (391 lb⋅ft) of torque at 2800-4800 rpm.
Applications:
- 2006–2011 E 500 / E 550
- 2006–2010 CL 500 / CL 550
- 2006–2010 CLS 500 / CLS 550
- 2006–2012 GL 500 / GL 550
- 2008–2011 ML 500 / ML 550
- 2006–2009 S 500 / S 550
- 2007–2012 SL 500 / SL 550
- 2006–2009 CLK 500 / CLK 550
- 2006-2015 G 500 / G 550
*Note: 500 or 550 model naming varies depending on geographical market.
See also
References
- "Mercedes-Benz M273 engine". australiancar.reviews. Retrieved 2018-06-17.