Mercedes-Benz M152 engine

Mercedes-Benz M152
Overview
ManufacturerMercedes-Benz
Production2012–2015
Layout
Configuration90° V8
Displacement5.5 L (5,461 cc)
Cylinder bore98 mm (3.86 in)
Piston stroke90.5 mm (3.56 in)
Cylinder block materialAluminium alloy
Cylinder head materialAluminium alloy
ValvetrainDOHC 4 valves x cyl.
Compression ratio12.6:1
Combustion
Fuel systemDirect injection
Fuel typeGasoline
Cooling systemWater cooled
Output
Power output310 kW (421 PS; 416 hp)
Specific power56.8 kW (77.2 PS; 76.2 hp) per litre
Torque output540 N⋅m (398 lb⋅ft)
Chronology
PredecessorMercedes-Benz M113 engine
SuccessorMercedes-Benz M176/M177/M178 engine

The M152 is a V8 engine produced by Mercedes-Benz from 2012 to 2015.

Design

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]

Models

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

M152 DE55

References

  1. ^ "Mercedes highlights the 5.5-liter V8 in the SLK 55 AMG [video]". Motor1.com. Retrieved 2018-07-29.
  2. ^ "Mercedes-Benz details new variable-displacement V8 for SLK55 AMG". Autoblog. Retrieved 2018-07-29.
  3. ^ "Mercedes-AMG brings cylinder deactivation to 5.5L V8; 30% reduction in fuel consumption". Green Car Congress. Retrieved 2018-07-29.
  4. ^ "2012 Mercedes-Benz SLK55 AMG". Car and Driver. Retrieved 2018-07-29.