PROFILPELAJAR.COM

Specifications
Specifications
Configuration:;
• Whyte	4-4-0
• UIC	2'B h2
• German	P 24.45
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Coupled dia.	1,750 mm
Carrying wheel diameter	1,000 mm
Wheelbase:
• Overall	7,400 mm
Length:;
• Over beams	16,411 mm
Axle load	15.5 t
Adhesive weight	31.0 t
Empty weight	44.6 t
Service weight	49.1 t
Water cap.	15.0 m3
Boiler:;
No. of heating tubes	141
No. of smoke tubes	1 fire tube
Boiler pressure	12 bar
Heating surface:
• Firebox	2.32 m2
• Radiative	8.9 m2
• Tubes	76.2 m2
• Evaporative	85.1 m2
Superheater:;
• Heating area	21.0 m2
Cylinders	2
Cylinder size	460 mm
Piston stroke	600 mm

Type and origin
Type and origin
Builder	Henschel
Build date	1898
Total produced	1

Prussian P 4
Prussian P 4
Builder
Type and origin
Builder	Henschel
Build date	1898
Total produced	1
Configuration:;
Specifications
Configuration:;
• Whyte	4-4-0
• UIC	2'B h2
• German	P 24.45
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Coupled dia.	1,750 mm
Carrying wheel diameter	1,000 mm
Wheelbase:
• Overall	7,400 mm
Length:;
• Over beams	16,411 mm
Axle load	15.5 t
Adhesive weight	31.0 t
Empty weight	44.6 t
Service weight	49.1 t
Water cap.	15.0 m3
Boiler:;
No. of heating tubes	141
No. of smoke tubes	1 fire tube
Boiler pressure	12 bar
Heating surface:
• Firebox	2.32 m2
• Radiative	8.9 m2
• Tubes	76.2 m2
• Evaporative	85.1 m2
Superheater:;
• Heating area	21.0 m2
Cylinders	2
Cylinder size	460 mm
Piston stroke	600 mm
Maximum speed
Performance figures
Maximum speed	90 km/h
Indicated power	675 kW (900 PS)
Retired
Career
Retired	1921

The Prussian P 4 was a derivative of the P 4.1 (Hanover variant) and the second superheated steam locomotive in the world.

Design

The engine was based on that of the Class P 4.1 that had Hanomag had produced in large numbers since 1892. It had slightly larger wheels and, due to its new design, significantly fewer heating tubes. The superheater and the steam engine were entirely independent designs.

Service and preservation

In 1898 a one-off was delivered by Hanomag to the Prussian state railways. The economy of the superheated system was soon proven in 1899 by the engine during trial runs from Kassel. Apart from a short stay at Halle the engine was assigned to Kassel as Cassel 131 and, from 1906, as P 4 Cassel 1846. In 1921, after the First World War, the engine was mothballed, along with many other machines of similar class. With its sectioned boiler the P 4 stood for a long time in the Transport and Construction Museums, part of Museum of the Present at Hamburger Bahnhof in Berlin^{[clarification needed]}.

References

Wagner, Andreas; Bäzold, Dieter; Zschech, Rainer; Lüderitz, Ralph (1990). Lokomotiven preußischer Eisenbahnen, Schnellzug- und Personenzuglokomotiven (EFA 2.3.1) (in German). Düsseldorf: Alba. pp. 271–272, 329. ISBN 3-87094-133-2.
Wagner, Andreas; Bäzold, Dieter; Zschech, Rainer (1997). Lokomotiv-Archiv Preußen Band 4. Augsburg: Bechtermünz. ISBN 3-86047-573-8.