| Mercedes-Benz OM636 engine | |
|---|---|
 | |
| Overview | |
| Manufacturer | Daimler-Benz AG |
| Production |
|
| Layout | |
| Configuration | Inline 4 |
| Displacement | 1,697 cc (103.6 cu in) 1,767 cc (107.8 cu in) |
| Cylinder bore | 73.5 mm (2.89 in) 75 mm (2.95 in) |
| Piston stroke | 100 mm (3.94 in) |
| Cylinder block material | Cast iron |
| Cylinder head material | Cast iron |
| Valvetrain | OHV |
| Compression ratio | 19.0:1 |
| RPM range | |
| Max. engine speed | 3600 |
| Combustion | |
| Operating principle | Diesel |
| Fuel system | Precombustion chamber injection |
| Fuel type | Gasoil |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 28–32 kW (38–44 PS; 38–43 hp) |
| Torque output | 96–101 N⋅m (71–74 lb⋅ft) |
| Chronology | |
| Predecessor | OM 138 |
| Successor | OM 621 |
The Mercedes-Benz OM636 is a diesel engine that was produced by Daimler-Benz from 1948 until 1990. Being the successor to the OM138, the OM636 has been used both as a passenger car engine and as an industrial engine. It saw its first use in the Boehringer Unimog in 1948, prior to its official introduction in the 1949 Mercedes-Benz W136. Throughout the 1950s, the OM636 was widely used in the Mercedes-Benz W120. In 1958, it was succeeded by the OM621 passenger car engine. However, after the introduction of the OM621, the OM636 was kept in production for industrial vehicles such as small lorries, boats, and combine harvesters, until 1990.
The abbreviation OM means Oelmotor (oil engine), and stands for a Daimler-Benz engine that uses any kind of light fuel oil as fuel (diesel engine).