BDŽ series 11
| BDŽ series 11 | |
|---|---|
| Numbering: | BDŽ 11.01-11.10, 11.16-11.22 |
| Number: | 17th |
| Manufacturer: |
Henschel , Berlin Borsig , Berlin |
| Year of construction (s): | 1941-42 |
| Retirement: | to ? |
| Axis formula : | 2'E h3 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 23,105 mm |
| Height: | 4582 mm |
| Total wheelbase: | 10,900 mm |
| Wheelbase with tender: | 19,605 mm |
| Service mass: | 108.2 t |
| Service mass with tender: | 179.2 t |
| Friction mass: | 85.0 t |
| Top speed: | 75 km / h |
| Driving wheel diameter: | 1450 mm |
| Impeller diameter front: | 850 mm |
| Control type : | Heusinger |
| Number of cylinders: | 3 |
| Cylinder diameter: | 520 mm |
| Piston stroke: | 700 mm |
| Boiler overpressure: | 16 bar |
| Grate area: | 4.87 m² |
| Superheater area : | 81.9 m² |
| Evaporation heating surface: | 224.1 m² |
| Tender: | 2'2 ' |
| Service weight of the tender: | 71.0 t |
| Water supply: | 28 m³ |
| Fuel supply: | 13 t |
| Brake: | Handbrake, one-way Westinghouse air brake |
| Control: | Heusinger |
The vehicles of the BDŽ series 11 were heavy, tender locomotives of the Bulgarian state railway BDŽ , intended for passenger and freight train service on main lines, with the 2'E wheel arrangement, which is unique in Europe .
history
At the end of the 1920s, the BDŽ, inspired by the standard steam locomotives of the Deutsche Reichsbahn , decided in future to base their procurement on their building principles. Essential elements of the new series 01 , 02 and 10 and 46 , initially acquired from 1931 , were the abandonment of the compound steam engine typical of Bulgarian locomotives in favor of simpler twin and triple designs as well as largely standardized boiler designs and fittings.
In 1939, the BDŽ finally established its own standard locomotive program. Of the series introduced so far, only series 46 and 48 should be ordered. Due to the positive experience with the class 02, which was designed as a triple locomotive, with the exception of the shunting locomotives, all classes were planned as three-cylinder locomotives. The following series were planned for procurement in the future:
- 2'D1 'steam locomotive with a tender for express and passenger trains , BD® class 03
- 2'C1 'steam locomotive with a tender for express and express trains, BDŽ series 05 (until 1942 series 07)
- 2'E steam locomotive with a tender for heavy passenger and freight trains, BD® class 11
- 1'C2 'tank locomotive for passenger trains on branch lines
- 1'D2 'tank locomotive for express and passenger trains on short routes, BDŽ class 36
- 1'E2 'tank locomotive for freight trains on branch lines
- 1'F2 'tank locomotive for heavy freight trains, BDŽ class 46
- C1 'tank locomotive for station services
- D1 'tank locomotive for shunting services, BD® class 48
Due to the outbreak of the Second World War , the BDŽ procurement program was only partially implemented and only a part of the nine planned series was procured between 1941 and 1943. A total of 52 locomotives of the 03, 05/07, 11, 36 and 46 series came to the BDŽ, after the war three more locomotives of the 48 series followed. In the absence of their own locomotive factories, all locomotives were designed and supplied by German manufacturers.
The 11 series was designed for heavy duty in front of passenger and freight trains on the main lines. It was given the unusual 2'E h3 wheel arrangement, which was otherwise not used in Europe and had previously only been used by the American Central Pacific Railroad in 1883 for a test locomotive called El Gobernador . Henschel delivered the first two pre-series copies 11.01 and 11.02 with the serial numbers 25933 and 25934 to Bulgaria in 1941. One year later, von Henschel placed the first serial order, eight units with the series numbers 11.03 to 11.10 and the serial numbers 26576 to 26583. Borsig manufactured another seven locomotives in 1943, the locomotives 11.16 to 11.22 had the Borsig serial numbers 15141 to 15147. At Škoda In Pilsen , the BDŽ had ordered another five units and had already reserved the road numbers 11.11 to 11.15 for them. Further locomotives up to the number 11.34 were planned to be ordered. In the German Reich, however, in the course of the war-economy concentration of production, the conversion to exclusive production of war locomotives was operated. The war economy saw no more space for small export series. In July 1942, the Main Committee on Rail Vehicles , headed by Gerhard Degenkolb , ordered a restriction of the vehicle catalog still permitted for German locomotive factories to three steam locomotive types for mainline railways . Only vehicles that had already started could still be finished, with Bulgaria still receiving preferential treatment as an ally of the Third Reich . The delivery of the 11 series therefore ended in 1943 after 17 units had been delivered. The locomotives ordered from Škoda were also no longer delivered.
All 17 locomotives survived the war and were used by the BDŽ on their most important routes after 1945. They mainly hauled heavy express and passenger trains on the ramp routes east of Sofia in the direction of Plovdiv and Pleven . The locomotives were decommissioned by the early 1970s.
literature
- Dimiter Dejanow: The locomotives of the Bulgarian State Railways . Slezak, Vienna 1990, ISBN 3-85416-150-6
- AE Durrant: The Steam Locomotives of Eastern Europe , David & Charles, Newton Abbot 1972, ISBN 0-7153-4077-8
Web links
Individual evidence
- ↑ Dimiter Dejanow: The locomotives of the Bulgarian State Railways . Slezak, Vienna 1990, p. 44
- ↑ Dimiter Dejanow: The locomotives of the Bulgarian State Railways . Slezak, Vienna 1990, p. 58
- ^ AE Durrant: The Steam Locomotives of Eastern Europe , David & Charles, Newton Abbot, ISBN 0-7153-4077-8 , p. 67
- ↑ Dimiter Dejanow: The locomotives of the Bulgarian State Railways . Slezak, Vienna 1990, pp. 61, 64
- ^ AE Durrant: The Steam Locomotives of Eastern Europe , David & Charles, Newton Abbot, ISBN 0-7153-4077-8 , p. 68
- ^ Alfred B. Gottwaldt : German War Locomotives 1939-1945: Locomotives, Wagons, Armored Trains and Railway Guns , 3rd edition, Franckh'sche Verlagsbuchhandlung, Stuttgart 1983, ISBN 3-440-05160-9 , p. 50
- ↑ Harald Navé: Steam locomotives in Central and Eastern Europe , Franckhsche Verlagsbuchhandlung, Stuttgart 1977, ISBN 3-440-04368-1 , p. 27