Mercedes-Benz OM656 engine

The OM656 is a turbocharged diesel engine produced by Mercedes-Benz since 2017. It was first introduced in the facelift W222 S-Class.[1]

Mercedes-Benz OM656
Overview
ManufacturerMercedes-Benz
Production2017–
Layout
ConfigurationStraight six engine
Displacement2.9 L (2,925 cc)
Cylinder bore82 mm (3.23 in)
Piston stroke92.4 mm (3.64 in)
Block materialAluminium alloy
Head materialAluminium alloy
ValvetrainDOHC 4 valves x cyl. with VVT
Compression ratio15.5:1
Combustion
SuperchargerBorgWarner's eBooster® electrically driven compressor
TurbochargerSingle-turbo or Twin-turbo (Super-Diesel)
Fuel systemCommon rail Direct injection
Fuel typeDiesel
Cooling systemWater cooled
Output
Power output210–250 kW (282–335 hp)
Torque output600–700 N⋅m (443–516 lb⋅ft)
Chronology
PredecessorMercedes-Benz OM642

Design

The OM656 is based on a modular design that is shared with other 4-cylinder and 6-cylinder, petrol and diesel engines.[2] It is the replacement to the previous V6,[3] in order to maintain the cost of production between different engines. The OM656 has dual overhead camshafts with variable valve timing, and uses AdBlue injection and exhaust gas recirculation to reduce emissions.[4] The cylinder walls are coated with an iron-carbon alloy to reduce friction.[5]

Models

Engine Power Torque Years
OM656 D29T R SCR 210 kW (286 PS; 282 hp)
at 3,400–4,600 rpm
600 N⋅m (443 lb⋅ft)
at 1,200–3,200 rpm
2017–[6]
OM656 D29TT SCR 250 kW (340 PS; 335 hp)
at 3,600–4,400 rpm
700 N⋅m (516 lb⋅ft)
at 1,200–3,200 rpm

OM656 D29T SCR

OM656 D29TT SCR

  • 2019–present V167 GLE 400 d

References

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.