Mercedes-Benz OM646 engine

TheOM646is aturbochargedinline-four engineproduced between 2002 and 2010 byMercedes-Benz.

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)
Cylinder blockmaterial	Cast iron
Cylinder headmaterial	Aluminium alloy
Valvetrain	DOHC
Compression ratio	17.5:1 (DE22 LA EVO), 18.0:1
Combustion
Turbocharger	Single
Fuelsystem	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 systems	EGR,DPF
Chronology
Predecessor	Mercedes-Benz OM611 engine
Successor	Mercedes-Benz OM651 engine

Design

The OM646 engine is sold under the 200 CDI and 220 CDI designation and features an electricfuel pump,exhaust gas recirculation,particulate filters,andEuro 4emission standardcompliance (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 ceramicglow plugsfor improved engine starts.

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
OM646 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

• 2003–2006W211 E200 CDI
• 2003–2007W203 C200 CDI
• 2003–2010W639 Vito 109 CDI, 111 CDI, 2.0 CDI
• 2008–2010CL203 CLC200 CDI
• 2003-2009Chrysler PT Cruiser

OM646 DE22 LA

• 2002–2006W211 E220 CDI
• 2004–2007W203 C220 CDI
• 2003–2010W639 Vito 115 CDI, 2.2 CDI
• 2005–2010C209 CLK220 CDI
• 2006–2009W906 Sprinter 209-516 CDI
• 2008–2010CL203 CLC220 CDI
• 2010–2013Vito(Chinese market; known as OM646 980)
• 2003–2009Chrysler PT Cruiser

OM646 DE 22 LA EVO R

• 2006–2009W211 E200 CDI
• 2007–2009W204 C200 CDI

OM646 DE 22 LA EVO

• 2006–2009W211 E220 CDI
• 2007–2009W204 C220 CDI