Mercedes-Benz OM604 engine

Mercedes-Benz OM604 engine
Mercedes-Benz OM604 engine
Overview
Manufacturer	Mercedes-Benz
Production	1993–1998
Layout
Configuration	Naturally aspirated Straight-4
Displacement	2.0 L (1,997 cc); 2.2 L (2,155 cc)
Cylinder bore	89 mm (3.50 in); 87 mm (3.43 in)
Piston stroke	86.6 mm (3.41 in); 84 mm (3.31 in)
Cylinder block material	Cast iron
Cylinder head material	Aluminum
Valvetrain	DOHC / 4 valves x cyl.
Compression ratio	22.0:1
Combustion
Fuel system	Indirect injection
Management	Lucas EPIC
Fuel type	Diesel
Oil system	Wet sump
Cooling system	Water cooled
Output
Power output	55–70 kW (75–95 PS; 74–94 hp)
Torque output	135–150 N⋅m (100–111 lb⋅ft)
Chronology
Predecessor	Mercedes-Benz OM601 engine
Successor	Mercedes-Benz OM611 engine

The Mercedes-Benz OM604 is a 2.0 litres (1,997 cc) and 2.2 litres (2,155 cc) inline-four cylinder (R4/I4) double overhead camshaft (DOHC) diesel engine with indirect injection manufactured by Mercedes-Benz between 1993 and 1998.^[1] It replaced the single overhead camshaft (SOHC) OM601 engine. Unlike other Mercedes Benz diesels at the time that used a Bosch inline injection pump the OM604 used the Lucas electronically controlled rotary distributor injection pump (EVE) which is less reliable. The seals of the Lucas injection pumps become brittle over time and leak, a seal kit is available

It is related to the straight-5 2.5 litre OM605 and the straight-6 3.0 litre OM606 engines.

^ "Engine specifications for Mercedes OM604, characteristics, oil, performance". Retrieved 2022-12-07.

[1] "Engine specifications for Mercedes OM604, characteristics, oil, performance". Retrieved 2022-12-07.

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