Prussian P 4
| P 4 (Prussia) | |
|---|---|
| Number: | 1 |
| Manufacturer: | Henschel |
| Year of construction (s): | 1898 |
| Retirement: | 1921 |
| Axis formula : | 2'B h2 |
| Genre : | P 24.45 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 16,411 mm |
| Total wheelbase: | 7,400 mm |
| Empty mass: | 44.6 t |
| Service mass: | 49.1 t |
| Friction mass: | 31.0 t |
| Wheel set mass : | 15.5 t |
| Top speed: | 90 km / h |
| Indexed performance : | 675 kW (900 hp) |
| Coupling wheel diameter: | 1,750 mm |
| Impeller diameter: | 1,000 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 460 mm |
| Piston stroke: | 600 mm |
| Boiler overpressure: | 12 bar |
| Number of heating pipes: | 141 |
| Number of smoke tubes: | 1 flame tube |
| Grate area: | 2.32 m² |
| Radiant heating surface: | 8.9 m² |
| Tubular heating surface: | 76.2 m² |
| Superheater area : | 21.0 m² |
| Evaporation heating surface: | 85.1 m² |
| Tender: | pr 3 T 15 |
| Water supply: | 15.0 m³ |
The P 4 was an offshoot of the P 4.1 type Hanover and the second superheated steam locomotive in the world.
construction
The machine was based on the P 4.1 machines that had been built since 1892, such as those manufactured by Hanomag in large numbers. It had slightly larger wheels and, due to its new design, managed with significantly fewer heating pipes. The superheater and the steam engine were completely separate constructions.
Use and whereabouts
In 1898 the unique piece was delivered to the Prussian State Railways by Hanomag . The cost-effectiveness of the superheated steam operation was quickly demonstrated by the machine, which started in test operation from Kassel in 1899. With the exception of a short stay in Halle, the machine was classified as the Cassel 131 and from 1906 as the P 4 Cassel 1846 . After the war, the machine was shut down along with many other machines of the same type in 1921. With the kettle cut open, the P stood for a long time in the Transport and Construction Museum and was from the Museum für Gegenwart in the Hamburger Bahnhof in Berlin.
literature
- Andreas Wagner, Dieter Bäzold, Rainer Zschech: Locomotive Archive Prussia Volume 4 , Bechtermünz, Augsburg 1997. ISBN 3-86047-573-8