Engineering:Mercedes-Benz OM606 engine

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Short description: Diesel engine
Mercedes-Benz OM606 engine
606D30LA Motor.jpg
Overview
ManufacturerMercedes-Benz
Production1993–2001
Layout
ConfigurationStraight-6
Displacement3.0 L (2,996 cc)
Cylinder bore87 mm (3.43 in)
Piston stroke84 mm (3.31 in)
Block materialCast iron
Head materialAluminum
ValvetrainDOHC 4 valves x cyl.
Compression ratio22.0:1 (Turbo)
25.0:1 (N/A)
Combustion
TurbochargerNo (.91x), Yes, intercooled (.96x)
Fuel systemIndirect injection
ManagementBosch
Fuel typeDiesel
Oil systemWet sump
Cooling systemWater cooled
Output
Power output100–130 kW (136–177 PS; 134–174 hp)
Torque output210–330 N⋅m (155–243 lb⋅ft)
Dimensions
Dry weight210 kg (463 lb)
Chronology
PredecessorMercedes-Benz OM603 engine
SuccessorMercedes-Benz OM613 engine

The Mercedes-Benz OM606 is a 3.0 litres (2,996 cc) inline-six cylinder (R6/I6) double overhead camshaft (DOHC) diesel engine with indirect injection manufactured by Mercedes-Benz between 1993 and 2001. It replaced the single overhead camshaft (SOHC) OM603 engine.

It uses a Bosch electronically controlled inline injection pump (ERE) except in the W124 where it uses a Bosch mechanically governed inline injection pump (Bosch M pump with RSF governor).

It is related to the straight-4 2.0 and 2.2 litre OM604 and the straight-5 2.5 litre OM605 engine families of the same era.

Design

As per the OM603 the engine has a cast iron block and aluminum cylinder head, the block has 7 main caps, they are held by two bolts per cap. The head is a DOHC design with 4 valves per cylinder and split intake ports. As per the OM603 it has hydraulic bucket type lifters, thus requiring no periodical valve adjustment. A big difference when compared to its turbo predecessors is the intercooler.

It has a double row timing chain that drives the injection pump and the camshafts, the sprocket is on the exhaust camshaft and both cams are connected by a gear drive, while the oil pump is driven by a separate single row chain. Only the .962 engine installed on the W210 E300 TURBODIESEL had a MAF sensor.

The main differences between the naturally aspirated and the turbocharged versions are the cylinder head, injection pump, valves, camshafts, rods, intake and exhaust manifolds and some minor differences like oil feed and return holes for the turbo and different crankcase ventilation system, valve cover and plastic engine cover.

Specifications

ID DIN-rated max. motive power
at rpm
Max. torque
at rpm
Aspiration Years Applications
OM 606.910 100 kW (136 PS; 134 hp) @ 4600-5000 rpm 210 N⋅m (155 lb⋅ft) @ 2200-4600 rpm Natural 1993–1996 W124 E 300 D
OM 606.912 ERE 1995–1997 W210 E 300 D
OM 606.961 ERE 130 kW (177 PS; 174 hp) @ 3800-4400 rpm 330 N⋅m (243 lb⋅ft) @ 1600-3600 rpm Turbocharged intercooled 1996–1999 W140 S 300 Turbodiesel
OM 606.962 ERE W210 E 300 Turbodiesel
OM 606.964 ERE 1996–2001 W463 G 300 Turbodiesel

See also