Mercedes-Benz OM639 engine
The OM639 is a turbocharged inline-three diesel engine produced by Mercedes-Benz, in collaboration with Mitsubishi Motors.[1]
| Mercedes-Benz OM639 | |
|---|---|
 | |
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 2004–2009 |
| Layout | |
| Configuration | Straight-three engine |
| Displacement | 1.5 L (1,493 cc) |
| Cylinder bore | 83 mm (3.27 in) |
| Piston stroke | 92 mm (3.62 in) |
| Block material | Aluminium alloy |
| Head material | Aluminium alloy |
| Valvetrain | DOHC |
| Compression ratio | 18.0:1 |
| Combustion | |
| Turbocharger | Single-turbo |
| Fuel system | Direct injection Common rail |
| Fuel type | Diesel |
| Cooling system | Water cooled |
| Output | |
| Power output | 50–70 kW (68–95 PS; 67–94 hp) |
| Torque output | 160–210 N⋅m (118–155 lb⋅ft) |
Design
The OM639 is based on the four-cylinder OM640 engine and features a dual mass flywheel, exhaust gas recirculation, and Euro 4 emission standard compliance.[2] It is transversely mounted behind the front axle and inclined 60 degrees due to the sandwich floor design used in the Smart and Mitsubishi models,[3] so the engine slides underneath the floorpan instead of into the cabin in the event of a head-on collision to improve safety.[4]
Models
| Engine | Power | Torque | Years |
|---|---|---|---|
| OM639 DE15 LA R |
50 kW (68 PS; 67 hp) @ 4,000 rpm |
160 N⋅m (118 lb⋅ft) @ 1,600 rpm |
2004–2009 |
| OM639 DE15 LA |
70 kW (95 PS; 94 hp) @ 4,000 rpm |
210 N⋅m (155 lb⋅ft) @ 1,800 rpm |
OM639 DE15 LA R
- 2004–2006 Smart Forfour 1.5l CDI[5]
- 2004–2009 Mitsubishi Colt 1.5 DI-D[6]
OM639 DE15 LA
- 2004–2006 Smart Forfour 1.5l CDI[7]
- 2004–2009 Mitsubishi Colt 1.5 DI-D[8]
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References
- Butler, Glenn (2004-10-01). "Smart ForFour (2004-) - motoring.com.au". motoring.com.au. Retrieved 2018-07-17.
- "Om639 Engine | Internal Combustion Engine | Diesel Engine". Scribd. Retrieved 2018-07-17.
- "2007 Smart Fortwo @ Top Speed". Top Speed. Retrieved 2018-07-17.
- "Mercedes cuts sandwich but B-class still tempts appetite". The National Business Review. 2012-04-14. Retrieved 2018-07-17.
- "Smart Forfour (2004 - 2007) used car review | Car review | RAC Drive". www.rac.co.uk. Retrieved 2018-07-17.
- "Smart Forfour 1.5 Brabus review | Autocar". www.autocar.co.uk. Retrieved 2018-07-17.
- "2006 Smart Forfour @ Top Speed". Top Speed. Retrieved 2018-07-17.
- "Mitsubishi Colt 1.5 Di-D review | Autocar". www.autocar.co.uk. Retrieved 2018-07-17.
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