MÁV Im
| MÁV Im / MÁV series 202 | |
|---|---|
 Factory photo of MÁV Im 801
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| Numbering: | MÁV Im 801 MÁV 202.001 |
| Number: | 1 |
| Manufacturer: | Budapest |
| Year of construction (s): | 1901 |
| Axis formula : | 2B1 n2 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length: | 12,434 mm |
| Height: | 4,570 mm |
| Width: | 3,140 mm |
| Fixed wheelbase: | 2,420 mm |
| Total wheelbase: | 8,665 mm |
| Empty mass: | 56.88 t |
| Service mass: | 63.84 t |
| Friction mass: | 31.09 t |
| Driving wheel diameter: | 2,100 mm |
| Impeller diameter: | 1,040 mm |
| Control type : | Heusinger |
| Number of cylinders: | 2 |
| Cylinder diameter: | 485 mm |
| Piston stroke: | 680 mm |
| Boiler overpressure: | 13 atü |
| Number of heating pipes: | 239 |
| Heating pipe length: | 4,500 mm |
| Grate area: | 2.82 m² |
| Radiant heating surface: | 13.3 m² |
| Tubular heating surface: | 175.7 m² |
| Evaporation heating surface: | 189 m² (in contact with water) |
| Brake: | Westinghouse |
The MÁV In was a fast train - Train Locomotive of the Hungarian State Railways MÁV.
In 1900, the MÁV had to think about purchasing new express train locomotives again, as the aging series MÁV Ia and MÁV Ie could no longer cope with the increasing train weights. A wet steam composite locomotive ( MÁV Il ) as well as a wet steam twin variant (MÁV Im) were therefore ordered in Budapest .
The boilers of the two variants were the same, but compared to the previous types (Ia, Ie, ...) they were larger and therefore more powerful. It had an inner frame and an outer engine.
Since the twin locomotive performed worse in the comparisons with the Il 801, no reorders were made.
In the second MÁV scheme, it was classified in the Im category with the number 801. In the third scheme valid from 1911 it was then designated as 202,001.
In 1910 it was converted into a superheated steam locomotive (like the compound machine Il 701), which increased its performance by around 40%.
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. Kölekedési Dokumentációs Vállalat, Budapest 1985, ISBN 963-552-161-8 .