Engineering:Mercedes-Benz OM646 engine
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| Mercedes-Benz OM646 | |
|---|---|
 | |
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 2002–2010 |
| Layout | |
| Configuration | Inline-four engine |
| Displacement | 2.1 L (2,148 cc) |
| Cylinder bore | 88 mm (3.46 in) |
| Piston stroke | 88.3 mm (3.48 in) |
| Block material | Cast iron |
| Head material | Aluminium alloy |
| Valvetrain | DOHC |
| Compression ratio | 17.5:1 (DE22 LA EVO), 18.0:1 |
| Combustion | |
| Turbocharger | Single |
| Fuel system | Common rail |
| Fuel type | Diesel |
| Cooling system | Water cooled |
| Output | |
| Power output | 65–125 kW (88–170 PS; 87–168 hp) |
| Torque output | 220–400 N⋅m (162–295 lb⋅ft) |
| Emissions | |
| Emissions target standard | Euro 4 |
| Emissions control technology | EGR, DPF |
| Chronology | |
| Predecessor | Mercedes-Benz OM611 engine |
| Successor | Mercedes-Benz OM651 engine |
The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz.
Design
The OM646 engine is sold under the 200 CDI and 220 CDI designation and features an electric fuel pump, exhaust gas recirculation, particulate filters,[1] and Euro 4 emission standard compliance (from 2003).[2] In 2006, the engine was updated under the EVO name and replaced the OM647 engine. It features a reduced compression ratio of 17.5:1, a new turbocharger, and ceramic glow plugs for improved engine starts.[3]
Models
| Engine | Power | Torque | Years |
|---|---|---|---|
| OM646 DE22 LA R |
65 kW (88 PS; 87 hp) @ 3,800 rpm | 220 N⋅m (162 lb⋅ft) @ 1,400–2,500 rpm | 2003–2010 |
| 70 kW (95 PS; 94 hp) @ 3,800 rpm | 250 N⋅m (184 lb⋅ft) @ 1,400–2,600 rpm | 2006–2010 | |
| 80 kW (109 PS; 107 hp) @ 3,800 rpm | 270 N⋅m (199 lb⋅ft) @ 1,600–2,600 rpm | 2003–2010 | |
| 85 kW (116 PS; 114 hp) @ 3,800 rpm | 290 N⋅m (214 lb⋅ft) @ 1,600–2,600 rpm | 2006–2010 | |
| OM644 DE22 LA R | 90 kW (122 PS; 121 hp) @ 4,200 rpm | 270 N⋅m (199 lb⋅ft) @ 1,400–2,800 rpm | 2003–2010 |
| OM646 DE22 LA |
65 kW (88 PS; 87 hp) @ 3,800 rpm | 220 N⋅m (162 lb⋅ft) @ 1,600–2,600 rpm | 2006–2009 |
| 80 kW (109 PS; 107 hp) @ 3,800 rpm | 280 N⋅m (207 lb⋅ft) @ 1,600–2,400 rpm | ||
| 95 kW (129 PS; 127 hp) @ 3,800 rpm | 305 N⋅m (225 lb⋅ft) @ 1,200–2,400 rpm | ||
| 105 kW (143 PS; 141 hp) @ 4,200 rpm | 340 N⋅m (251 lb⋅ft) @ 2,000 rpm | 2003–2004 | |
| OM646 DE22 LA | 110 kW (150 PS; 148 hp) @ 3,800–4,200 rpm | 330 N⋅m (243 lb⋅ft) @ 1,200–2,400 rpm | 2003–2010 |
| OM646 DE22 LA EVO R |
100 kW (136 PS; 134 hp) @ 3,800 rpm | 270 N⋅m (199 lb⋅ft) @ 1,600–3,000 rpm | 2007–2009 |
| 340 N⋅m (251 lb⋅ft) @ 2,000 rpm | 2006–2009 | ||
| OM646 DE22 LA EVO |
125 kW (170 PS; 168 hp) @ 3,800 rpm | 400 N⋅m (295 lb⋅ft) @ 2,000 rpm |
OM646 DE22 LA R
- 2003–2006 W211 E200 CDI
- 2003–2007 W203 C200 CDI
- 2003–2010 W639 Vito 109 CDI, 111 CDI, 2.0 CDI
- 2008–2010 CL203 CLC200 CDI
- 2003-2009 Chrysler PT Cruiser
OM646 DE22 LA
- 2002–2006 W211 E220 CDI
- 2004–2007 W203 C220 CDI
- 2003–2010 W639 Vito 115 CDI, 2.2 CDI
- 2005–2010 C209 CLK220 CDI
- 2006–2009 W906 Sprinter 209-516 CDI
- 2008–2010 CL203 CLC220 CDI
- 2010–2013 Vito (Chinese market; known as OM646 980)
- 2003–2009 Chrysler PT Cruiser
OM646 DE 22 LA EVO R
- 2006–2009 W211 E200 CDI
- 2007–2009 W204 C200 CDI
OM646 DE 22 LA EVO
- 2006–2009 W211 E220 CDI
- 2007–2009 W204 C220 CDI
References
- ↑ Klose, Steane (2008-04-11). "Mercedes Benz reveals new range of four cylinder diesels" (in en-US). The Motor Report. https://www.themotorreport.com.au/car-article/mercedes-benz-reveals-new-range-of-four-cylinder-diesels-66720.html.
- ↑ "Mercedes C200 CDI estate review | Autocar" (in en). https://www.autocar.co.uk/car-review/mercedes-benz/c-class/first-drives/mercedes-c200-cdi-estate.
- ↑ "Mercedes-Benz OM646, OM647 and OM648 engines" (in en). http://australiancar.reviews/mercedesbenz_OM646_OM647_OM648.php.
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