Mercedes-Benz OM628 | |
---|---|
Overview | |
Manufacturer | Mercedes-Benz |
Production | 1999–2005 |
Layout | |
Configuration | 75° V8 |
Displacement | 4.0 L (3,996 cc) |
Cylinder bore | 86 mm (3.39 in) |
Piston stroke | 86 mm (3.39 in) |
Cylinder block material | Aluminium alloy |
Cylinder head material | Aluminium alloy |
Valvetrain | DOHC 4 valves x cyl. |
Compression ratio | 18.5:1 |
Combustion | |
Turbocharger | Garrett GT1749V |
Fuel system | Common rail |
Fuel type | Diesel |
Cooling system | Water cooled |
Output | |
Power output | 184–191 kW (250–260 PS; 247–256 hp) |
Torque output | 560 N⋅m (413 lb⋅ft) |
Chronology | |
Successor | Mercedes-Benz OM629 engine |
The Mercedes-Benz OM628 engine is a turbocharged diesel V8 engine produced by Mercedes-Benz, from 1999 to 2005.
The OM628 was created in response to competing V8 diesel engines produced by Audi and BMW. [1] It first appeared in the W220 S400 CDI and was subsequently the first V8 diesel engine in a Mercedes passenger vehicle. The OM628 engine features dual overhead camshafts, 4 valves per cylinder, exhaust gas recirculation, a Garrett GT1749V turbocharger, and Euro 4 emissions compliance. [2] The engine block and cylinder heads are made from an aluminium alloy, via the sand-casting process.
Engine | Power | @ rpm | Torque | @ rpm | Years |
---|---|---|---|---|---|
OM628 DE40 LA | 184 kW (250 PS; 247 hp) | 4,000 | 560 N⋅m (413 lb⋅ft) | 1,700–2,600 | 1999–2005 |
191 kW (260 PS; 256 hp) | 2003–2005 |
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