MÁV series 442
| MÁV series 442 CFR 442 JDŽ 117 |
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| Numbering: | MÁV 442.001–020 MÁV 442.901–910 |
| Number: | 30th |
| Manufacturer: | MÁVAG , Budapest |
| Year of construction (s): | 1917-1920 |
| Retirement: | until 1972 |
| Axis formula : | 1'D1 'h2 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 14,295 mm |
| Height: | 4,650 mm |
| Width: | 3,150 mm |
| Fixed wheelbase: | 5,400 mm |
| Total wheelbase: | 10,700 mm |
| Smallest bef. Radius: | 200 m |
| Empty mass: | 67.3 t |
| Service mass: | 86.0 t |
| Friction mass: | 57.78 t |
| Wheel set mass : | 14.42 t |
| Top speed: | 85 km / h |
| Indexed performance : | 1,150 hp |
| Driving wheel diameter: | 1,606 mm |
| Impeller diameter: | 950 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 570 mm |
| Piston stroke: | 650 mm |
| Boiler : | Brotan kettle |
| Cup length: | 4,000 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 2.77 m² |
| Superheater area : | 45 m² |
| Evaporation heating surface: | 147 m² (in contact with water) |
| Water supply: | 12 m³ |
| Fuel supply: | 5 t |
| Brake: | Westinghouse |
| Speedometer: | Steward |
| Control: | Heusinger |
The MÁV series 442 was a passenger train - tank locomotive series of the Hungarian State Railways MÁV for heavy suburban traffic from Budapest .
history
Since the MÁV series 342 had reached its performance limit due to the increasing train weights in the suburban traffic of Budapest , MÁVAG , Budapest procured a larger and more powerful machine for these services. The reinforcement was achieved by enlarging the Brotankessel and a corresponding engine. In order to comply with the permitted axle load of 14 t, the engine was enlarged to 4 driving axles.
What is interesting about this locomotive is that it still had to run with a reduced water content of 9 m³ in order to maintain the axle pressure of 14 t. The machines carried 600 t at 60 km / h on a level route and 530 t on a gradient of 7 per thousand. At their top speed of 85 km / h, they could still carry 270 t on a flat stretch.
The machines carried suburban and passenger trains for decades until modern traction made them superfluous. The decommissioning date is given as 1972. One machine, the 442.013, has been preserved as a museum in the Budapest Railway Park .
technical features
The locomotives could be viewed as an enlarged version of the MÁV series 342 . Interestingly, the boiler pressure was reduced to 12 bar. The first 10 locomotives were supplied with small pipes, the rest with large smoke pipes.
There were also differences in the drive; the first 10 machines were designed with running axles as Krauss-Helmholtz steering frames, the remaining machines had Adam axles . The locomotives with Adam's axles had a guided length of 10,700 mm, this dimension was slightly smaller for the locomotives with Krauss-Helmholtz steering frames.
See also
- List of locomotive and multiple unit series of the MÁV
- List of locomotive and multiple unit series of the ČSD
literature
- Mihály Kubinszky (ed.): Hungarian locomotives and railcars. Akadémiai Kiadó, Budapest 1975, ISBN 963-05-0125-2 .
Web links
- Row 442 in the Hungarian Wikipedia
- Website and photo of the 442 series