Mercedes-Benz M152 engine
The M152 is a V8 engine produced by Mercedes-Benz from 2012 to 2015.
| Mercedes-Benz M152 | |
|---|---|
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 2012–2015 |
| Layout | |
| Configuration | 90° V8 |
| Displacement | 5.5 L (5,461 cc) |
| Cylinder bore | 98 mm (3.86 in) |
| Piston stroke | 90.5 mm (3.56 in) |
| Block material | Aluminium alloy |
| Head material | Aluminium alloy |
| Valvetrain | DOHC 4 valves x cyl. |
| Compression ratio | 12.6:1 |
| Combustion | |
| Turbocharger | Naturally aspirated |
| Fuel system | Direct injection |
| Fuel type | Gasoline |
| Cooling system | Water cooled |
| Output | |
| Power output | 310 kW (421 PS; 416 hp) |
| Specific power | 56.8 kW (77.2 PS; 76.2 hp) per litre |
| Torque output | 540 N⋅m (398 lb⋅ft) |
| Chronology | |
| Predecessor | Mercedes-Benz M113 engine |
| Successor | Mercedes-Benz M176/M177/M178 engine |
Design
The M152 is essentially a naturally aspirated variant of the M157 engine and but has been revised by AMG.[1] It has the same bore and a stroke of 98 mm × 90.5 mm (3.86 in × 3.56 in) as the M157 but with a higher 12.6:1 compression ratio.[2] Compared to its predecessor, the M152 features new cylinder heads, intake manifold, and lubrication system. It also now has direct injection, and Cylinder deactivation.[3]
Models
| Engine | Power | Torque | Years |
|---|---|---|---|
| M152 DE55 | 310 kW (421 PS; 416 hp) at 6,800 rpm |
540 N⋅m (398 lb⋅ft) at 4,500 rpm |
2012–2015 |
M152 DE55
- 2012–2015 R172 SLK 55 AMG[4]
References
- "Mercedes highlights the 5.5-liter V8 in the SLK 55 AMG [video]". Motor1.com. Retrieved 2018-07-29.
- "Mercedes-Benz details new variable-displacement V8 for SLK55 AMG". Autoblog. Retrieved 2018-07-29.
- "Mercedes-AMG brings cylinder deactivation to 5.5L V8; 30% reduction in fuel consumption". Green Car Congress. Retrieved 2018-07-29.
- "2012 Mercedes-Benz SLK55 AMG". Car and Driver. Retrieved 2018-07-29.
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