Mercedes-Benz OM628 engine
The Mercedes-Benz OM628 engine is a turbocharged V8 engine produced by Mercedes-Benz, from 1999 to 2005.
| 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) |
| Block material | Aluminium alloy |
| 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 |
Design
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.
Models
| 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 |
OM628 (184 kW version)
- 1999–2003 W220 S400 CDI[3]
- 2001–2005 W163 ML400 CDI[4]
- 2001–2005 W463 G400 CDI[5]
OM628 (191 kW version)
- 2003–2005 W211 E400 CDI[6]
- 2003–2005 W220 S400 CDI[7]
References
- "Audi A8 3.3 TDI, BMW 740d, Mercedes S 400 CDI: Audi A8 3.3 TDI, BMW 740d, Mercedes S 400 CDI". auto motor und sport (in German). Retrieved 2018-09-16.
- "Mercedes-Benz OM628 and OM629 engines". australiancar.reviews. Retrieved 2018-09-16.
- "2003 Mercedes Benz S-Class". Drive Arabia. Retrieved 2018-09-16.
- Rebmann, Dieter (2005-06-01). "Mercedes-Benz M-Class (2005-) - motoring.com.au". motoring.com.au. Retrieved 2018-09-16.
- "Mercedes-Benz G-Class 25th Anniversary - GermanCarFans.com". www.rubicon-trail.com. Retrieved 2018-09-16.
- "Mercedes-Benz E 400 CDI: smooth diesel power from eight cylinders". www.new-cars.com. Retrieved 2018-09-16.
- John, Honest (2005-10-28). "Buyers' guide: Mercedes-Benz S-class W220 (1999-2005)". ISSN 0307-1235. Retrieved 2018-09-16.
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