MAN DM 12
| Vereinigte Maschinenfabrik Augsburg and Maschinenbaugesellschaft Nürnberg AG | |
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| DM 12 | |
| Manufacturer: | MAN |
| Production period: | 1902-1910 |
| Working principle: | diesel |
| Design: | Single cylinder , standing |
| Displacement: | 9.9 liters (9902 cm³) |
| Previous model: | none |
| Successor: | - |
The DM 12 is a low- speed, single - cylinder , four - stroke diesel engine from MAN , which was developed by Rudolf Diesel . The DM 12 is a first-generation diesel engine; a copy of the Ostwestfalen-Lippe University of Applied Sciences built in 1903 is still operational today. It was built 82 times by MAN from 1902 to 1910.
technology
The cylinder of the engine is arranged upright, with a bore of 205 mm and a stroke of 300 mm. The cylinder stands on a V-shaped machine frame in which the crankshaft is mounted at the bottom. A large flywheel is mounted on the power delivery side of the engine. Opposite, the crankshaft drives a piston compressor via a short connecting rod, which generates the compressed air to blow in the fuel. The crosshead of the compressor is opposite its cylinder, the piston rod has a recess for the connecting rod and crankshaft. On this side of the engine is also the vertical shaft that drives the camshaft located next to the cylinder. The camshaft actuates three overhead valves via roller rocker arms : exhaust, intake and the valve for injecting the fuel. The camshaft also drives the fuel metering pump. The engine is started with compressed air and cooled with ambient air.
Technical specifications
| DM 12 | |
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| construction time | 1902-1910 |
| design type | Single cylinder , upright, OHV valve control |
| Bore × stroke, displacement | 205 × 300 mm, 9902 cm 3 |
| Capacity at 250 min -1 | 8,800 watts |
| maximum torque | 343 Nm |
| Torque at 250 min −1 | 336 Nm |
Individual evidence
- ↑ a b c Wildstar-Schleswig-Holstein: In memory of Rudolf Diesel
- ^ University of Ostwestfalen-Lippe: MAN diesel engine from 1903
- ↑ a b c MAN DM 12 running , Danish
- ↑ Ostwestfalen-Lippe University of Applied Sciences: Oldest running MAN diesel engine in the world, 1903