MÁV series 402
| MÁV series 402 | |
|---|---|
 Dimensional sketch
|
|
| Numbering: | MÁV: 402 001–002 |
| Number: | 2 |
| Manufacturer: | MÁVAG , Budapest |
| Year of construction (s): | 1927 |
| Retirement: | until 1968 |
| Type : | 1'D h2 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length: | 12,572 mm (locomotive) |
| Height: | 4,650 mm |
| Fixed wheelbase: | 3,600 mm |
| Total wheelbase: | 8,760 mm |
| Service mass: | 78.9 t |
| Friction mass: | 65 t |
| Wheel set mass : | 16.4 t |
| Top speed: | 65 km / h |
| Indexed performance : | 1760 hp |
| Starting tractive effort: | 138 kN |
| Driving wheel diameter: | 1,350 mm |
| Control type : | Heusinger |
| Number of cylinders: | 2 |
| Cylinder diameter: | 600 mm |
| Piston stroke: | 660 mm |
| Boiler overpressure: | 16 bar |
| Grate area: | 4.48 m² |
| Radiant heating surface: | 17.3 m² |
| Tubular heating surface: | 199.1 m² |
| Superheater area : | 55.7 m² |
| Service weight of the tender: | 57.6 t |
| Water supply: | 24.6 m³ |
| Fuel supply: | 12 m³ |
| Brake: | Knorr traction brake |
The vehicles of the MÁV series 402 were tender locomotives of the Hungarian State Railways (MÁV) for the transport of express freight trains with 150 axles. Due to its axle load, the locomotive was only produced in two copies and was in service until 1968.
history
The locomotive was created with the tried and tested construction elements of the MÁV series 424 , such as the boiler , steam cylinder , engine and tender. They were intended for the coal traffic between Budapest and Tatabánya . Operations showed that they were doing well here and that they were able to fulfill their tasks more economically than the 424 series. Their further spread was prevented by the fact that at the time of their creation only a few lines of the Hungarian state railways were designed for 16 t axle load. In addition, it often lurched at higher speeds of 50 km / h or more, which was due to the fact that the fourth axis was able to move sideways.
For all these reasons, a five-axle locomotive for the same purpose was ordered from MÁVAG in Budapest in the early 1940s , and it was to be given the designation 524 . The parts of this first order for ten locomotives had already been completed, but the locomotives could not be completed due to war reasons. The 402 series locomotives were retired in 1951 ( 402 002 ) and 1968 ( 402 001 ).
technology
The front barrel axis was designed as an Adam axis . The second coupling axle had wheel tires weakened by 15 mm and the fourth axle had +/- 30 mm side play. This led to a fixed wheelbase of 3,600 mm for the locomotive.
The engine had been taken over from the MÁV series 424. In order to use local coal and to be able to remove the slag residues more easily, the locomotives were equipped with a rotating grate of Hungarian design. They also had cleaners for the boiler feed water . A Knorr-Nielebock double composite air pump was used to brake the coal trains with a high number of axles, which were to be transported at 50 km / h .
See also
literature
- Mihály Kubinszky (ed.): Hungarian locomotives and railcars. Akadémiai Kiadó, Budapest 1975, ISBN 963-05-0125-2 .
Web links
Individual evidence
- ^ Mihály Kubinszky (ed.): Hungarian locomotives and railcars. Akadémiai Kiadó, Budapest 1975, ISBN 963-05-0125-2 , page 197
- ↑ Stationing data of the locomotives on www.pospichal