MÁV IVe
| MÁV IVe MÁV series 401 |
|
|---|---|
 MÁV IVe 4451
|
|
| Numbering: | MÁV IVe 4451–4465 MÁV 401,001–015 |
| Number: | 15th |
| Manufacturer: | Budapest |
| Year of construction (s): | 1905-1908 |
| Axis formula : | 1BB n4v |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 17,959 mm |
| Length: | 11,399 mm |
| Height: | 4,570 mm |
| Width: | 3,100 mm |
| Total wheelbase: | 8,710 mm |
| Empty mass: | 68.410 t |
| Service mass: | 75.320 t |
| Friction mass: | 65,320 t |
| Top speed: | 60 km / h |
| Driving wheel diameter: | 1,440 mm |
| Impeller diameter: | 1,040 mm |
| Control type : | Heusinger-Walschaert |
| Number of cylinders: | 4th |
| HD cylinder diameter: | 390 mm |
| LP cylinder diameter: | 635 mm |
| Piston stroke: | 650 mm |
| Boiler overpressure: | 16 atü |
| Number of heating pipes: | 272 |
| Heating pipe length: | 5,000 mm |
| Grate area: | 3.55 m² |
| Radiant heating surface: | 13.58 m² |
| Tubular heating surface: | 222.17 m² |
| Brake: | Westinghouse, air regulator brake |
The MÁV IVe were freight train - Tender locomotives of Hungarian State Railways (MÁV).
history
Since the MÁV had not had any positive experience with the curve running with quadruple coupled locomotives (see MÁV IVc ), it was decided to purchase mallet locomotives for freight train service on routes with steep inclines and curves.
After the Hungarian karst lines had been increased to 16 t permissible axle weight, more powerful locomotives could be procured compared to the mallets of the MÁV IVd series . The Budapest machine works chose larger wheel dimensions for its design than those of the IVd, which enabled a top speed of 60 km / h to be achieved. The known restless running of the IVd at 50 km / h was remedied in the IVe by using a leading axle with a return spring. The boiler was larger and more powerful than that of the IVd. For propulsion, however, a compound engine was chosen again. A Heusinger control was chosen as the control .
Since the MÁV soon went over to CC-Mallets ( MÁV 601 ), only 15 copies of the IVe series were procured.
literature
- Type sheets of the machine works of the Royal Hungarian State Railways . 1907.
- Mihály Kubinszky (ed.): Hungarian locomotives and railcars . Akadémiai Kiadó, Budapest 1975, ISBN 963-05-0125-2 .
- Ernő Lányi et al .: Nagyvasúti Vontatójárművek Magyarországon . Ed .: Közlekedési Múzeum. Közlekedési Dokumentációs Vállalat, Budapest 1985, ISBN 963-552-161-8 .