Szekely multiple unit train
| MÁV series Szekely multiple unit train | |
|---|---|
| Number: | 2 |
| Manufacturer: | Ganz & Co. , Budapest |
| Year of construction (s): | 1941 (renovation) |
| Retirement: | unknown |
| Axis formula : | (1B) 2 ' |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 21,000 mm |
| Trunnion Distance: | 13,760 mm |
| Total wheelbase: | 17,280 mm |
| Service mass: | 59 t |
| Friction mass: | 26 t |
| Wheel set mass : | 13 t |
| Top speed: | 120 km / h |
| Installed capacity: | 450 hp |
| Wheel diameter: | 920 mm |
| Motor type: | XII Jv 170/240 |
| Motor type: | 12-cylinder V-engine |
| Rated speed: | 1,150 rpm |
| Power transmission: | diesel mechanical |
| Drive: | diesel mechanical |
| Coupling type: | Screw coupling |
| Seats: | 68 |
| Classes : | 3. |
The Szekely multiple units were diesel-mechanical multiple units of the Hungarian State Railways (MAV) for express train traffic on non-electrified main and branch lines . The vehicles are the result of a conversion from the ČSD series M 251.0 .
history
In 1941 these railcars were supplied by Ganz & Co. , which were converted from the M 251.0 series. Only the car body with the frame was taken over from the donor vehicles . On the other hand, the drive system and the drive were completely rebuilt.
The vehicles experienced a significant increase in performance through the conversion. They were then approved for 120 km / h and were used from 1941 on the express train connection from Budapest to Sepsiszentgyörgy . For this 740 km long route, the multiple unit train (one multiple unit, two trailer cars) needed eleven hours with several intermediate stops.
technical features
Instead of the twin-engine version of the donor vehicles, the railcar received a drive system with a diesel engine of 450 HP of the Ganz- Jendrassik type . This engine was a twelve-cylinder four-stroke engine, the cylinders of which had a diameter of 170 mm with a stroke of 240 mm.
The mechanical power transmission took place via electro-pneumatic control, which was used for the first time in the MÁV. The engine and gearbox were housed in a motor bogie. Two axles were driven, an additional running axle was added to the bogie to reduce the axle load. This is the arrangement as it later became known for the Hargita railcars . The multi-step gearbox was assembled with the change gearbox in one housing. The multi-step transmission worked automatically. The engine driver only had to engage 1st gear, the change to the next gear steps was carried out automatically by the respective engine speed and speed.
See also
literature
- Mihály Kubinszky (Ed.): Hungarian Locomotives and Railcars , Akadémiai Kiadó, Budapest, 1975, ISBN 963-05-0125-2