| Mercedes-Benz OM 138 | |
|---|---|
 | |
| Overview | |
| Manufacturer | Daimler Benz AG |
| Production | 1935-1940 |
| Layout | |
| Configuration | Naturally aspirated Straight-4 |
| Displacement | 2.5 L; 155.3 cu in (2,545 cc) |
| Cylinder bore | 90 mm (3.54 in) |
| Piston stroke | 100 mm (3.94 in) |
| Cylinder block material | Grey cast iron |
| Valvetrain | OHV 2 valves x cyl. |
| Compression ratio | 20.5:1 |
| Combustion | |
| Operating principle | Diesel |
| Fuel system | Precombustion chamber injection |
| Fuel type | Diesel oil |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 33 kW (45 PS) |
| Torque output | car engines: 105.35 N⋅m (77.70 lb⋅ft) truck engines: 112.88 N⋅m (83.26 lb⋅ft) |
| Dimensions | |
| Dry weight | 300 kg (661 lb) |
| Chronology | |
| Predecessor | None |
| Successor | OM 636 |
The Mercedes-Benz OM 138 is a diesel engine manufactured by Daimler-Benz. In total, 5,719 units were produced between 1935 and 1940.[1][2][A 1] It was the first diesel engine especially developed and made for a passenger car. The first vehicle powered by the OM 138 was the Mercedes-Benz W 138.[1] The light Mercedes-Benz trucks L 1100 and L 1500 as well as the bus O 1500[A 2] were also offered with the OM 138 as an alternative to the standard Otto engine.[3]
Cite error: There are <ref group=A> tags on this page, but the references will not show without a {{reflist|group=A}} template (see the help page).