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, and Euro 4 emission standard compliance (from 2003). 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.
Models EnginePowerTorqueYearsOM646 DE22 LA R @ 3,800 rpm @ 1,400–2,500 rpm2003–2010 @ 3,800 rpm @ 1,400–2,600 rpm2006–2010 @ 3,800 rpm @ 1,600–2,600 rpm2003–2010 @ 3,800 rpm @ 1,600–2,600 rpm2006–2010OM646 DE22 LA R @ 4,200 rpm @ 1,400–2,800 rpm2003–2010OM646 DE22 LA @ 3,800 rpm @ 1,600–2,600 rpm2006–2009 @ 3,800 rpm @ 1,600–2,400 rpm @ 3,800 rpm @ 1,200–2,400 rpm @ 4,200 rpm @ 2,000 rpm2003–2004OM646 DE22 LA @ 3,800–4,200 rpm @ 1,200–2,400 rpm2003–2010OM646 DE22 LA EVO R @ 3,800 rpm @ 1,600–3,000 rpm2007–2009 @ 2,000 rpm2006–2009OM646 DE22 LA EVO @ 3,800 rpm @ 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