MÁV series M31
| MÁV series M31 Gysev series M31 OSE series A.251 – A.261 |
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 Company photo of an A23 class industrial locomotive
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| Numbering: | M31 2001-2053 |
| Number: | 53 |
| Manufacturer: | Ganz-MÁVAG , Budapest |
| Year of construction (s): | 1958-1960 |
| Axis formula : | C. |
| Genre : | DEM 1, DEM 2 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | DHM 1: 9,830 mm DHM 2: 10,095 mm |
| Height: | 4,105 mm |
| Width: | 3,000 mm |
| Total wheelbase: | 3,800 mm |
| Service mass: | 45 t |
| Friction mass: | 45 t |
| Wheel set mass : | 15 t |
| Top speed: | 60 km / h |
| Installed capacity: | 368 kW (500 hp) |
| Driving wheel diameter: | DHM 1: 1,232 mm DHM 2: 1,225 mm |
| Motor type: | GANZ-Jendrassik 12 Jv 17/24 |
| Motor type: | Twelve-cylinder four-stroke diesel engine |
| Rated speed: | 1,250 rpm |
| Power transmission: | hydrodynamic |
| Locomotive brake: | Handbrake |
| Train brake: | Compressed air brake type Knorr |
The MÁV series M31 was a three-axle diesel locomotive , first produced in 1958 and delivered in 53 copies to Magyar Államvasutak (MÁV) by 1960 , which was to replace steam locomotives in shunting and light freight train service. Machines of this type were also supplied to various industrial companies and were given the designation A23 . Some locomotives have been preserved.
history
The history of this locomotive goes back to the Wehrmacht locomotive WR 360 C 14 , some of which remained in Hungary after 1945 and which were designated as the M30 series . In 1958, the revised M31 with increased performance appeared , which was based on the same structure. The locomotives were called DHM1 and DHM 2 , which varied in dimensions and were otherwise designed in a uniform manner.
The locomotives were used for medium-sized shunting and transfer trains on branch lines, for which they were well suited with their speed of 60 km / h. Due to line closures and decreases in traffic, they retired from operational service. The M31 2035 in the Budapest Railway Park is still operational, the M31 2007 in Istvántelek and the M31 2019 in Szeged are also preserved . In addition, there are some of the specimens manufactured in various variations as industrial locomotives.
technical description
Like the V 36, the locomotive is constructed with an end driver's cab and engine room. The controls in the driver's cab were designed in such a way that they made it possible to maneuver with frequently changing maneuvering sides. All elements of the drive and auxiliary systems were housed in the engine room. In consideration of the maneuvering work, both end walls are provided with transition plates and platforms as well as access niches.
Initially, a twelve-cylinder four-stroke diesel engine GANZ Jendrassik 12 Jv 17/24, the min at 1,250 -1 gave an output of 500 PS, are used. This diesel engine worked according to the pre-chamber method and was equipped with a cold starter according to the GANZ system. Later the engine power is given as 331 kW. The power is transmitted hydrodynamically with a two-converter gearbox from Voith . The switchover between the two converter levels was done electro-pneumatically at 30 km / h and was carried out automatically. Later a GANZ gearbox was used according to the same scheme. The reversing gear , in which the two pairs of gears were constantly in mesh and shifted with claws , was arranged after the fluid transmission . The direction of travel was changed electro-pneumatically, if necessary it could be done by hand. The jackshaft for driving the wheels by means of drive and coupling rods was at the transmission output; it was placed behind the wheel group on the locomotive. This resulted in a symmetrical wheelbase for the machine.
Cooling water was used to cool the drive system. It was cooled in finned coolers at the front of the locomotive. Except for the automated circuit, the operating elements corresponded to those of the diesel-mechanical diesel railcars of the MÁV series Bbmot .
See also
literature
- Mihály Kubinszky (ed.): Hungarian locomotives and railcars. Akadémiai Kiadó, Budapest 1975, ISBN 963-05-0125-2 .
Web links
- Photo of the M31 2035 in Budapest
- Photo of the M31 2015 in Szentes
- Photo of the M31 2014 1989 in Karcag
- Film about the M31 2035 on youtube.com
- List of manufactured M31s for the MÁV
- Website via the M31
Individual evidence
- ↑ Website about the stationing of the M31
- ^ Mihály Kubinszky (ed.): Hungarian locomotives and railcars . Akadémiai Kiadó, Budapest 1975, ISBN 963-05-0125-2 . , Page 260
- ↑ Website with a technical description of the locomotive