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Reciprocating internal combustion engine From Wikipedia, the free encyclopedia
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) |
Cylinder block material | Aluminium alloy |
Cylinder head material | Aluminium alloy |
Valvetrain | DOHC 4 valves x cyl. |
Compression ratio | 12.6:1 |
Combustion | |
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 |
The M152 is essentially a naturally aspirated variant of the M157 engine 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]
Engine | Power | Torque | Years |
---|---|---|---|
M152 DE55 | 310.5 kW (422 PS; 416 hp) at 6,800 rpm |
540 N⋅m (398 lb⋅ft) at 4,500 rpm |
2012–2015 |
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