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Prussian P 4[h]2[/h]
![P 4[h]2[/h] of the standard variant](/data/photosTN/preussische_P4.2.jpg)
The first two examples of the P 4[h]2[/h] came from the series of eight trial locomotives that were already described in the article of the P 4[h]1[/h]. In contrast to the latter, they were powered by a two-cylinder c...
| Prussian P 4[h]2[/h]Remove | |
|---|---|
| Variant | Erfurt variant |
| Built | 1891 |
| Manufacturers | Henschel |
| Wheel arrangement | 2B |
| Gauge | 1435 mm |
| Length | 15615 mm |
| Service mass | 48600 kg |
| Top speed | 90 km/h |
| Power | |
| Engine |
General
| Property | Prussian P 4[h]2[/h]Erfurt variant |
|---|---|
| Built | 1891 |
| Manufacturers | Henschel |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Prussian P 4[h]2[/h]Erfurt variant |
|---|---|
| Length | 15.62 m |
| Wheelbase | 7.40 m |
| Total wheelbase | 14.71 m |
| Empty mass | 43.1 t |
| Service mass | 48.6 t |
| Adhesion mass | 28.3 t |
| Rigid wheelbase | 2.65 m |
| Axle load | 14.2 t |
| Water capacity | 12,000 l |
| Fuel capacity | 5 t (coal) |
Boiler
| Property | Prussian P 4[h]2[/h]Erfurt variant |
|---|---|
| Grate area | 2.3 m² |
| Firebox surface | 9 m² |
| Tube heating surface | 116 m² |
| Evaporative heating surface | 125 m² |
| Total heating surface | 125.0 m² |
Power plant
| Property | Prussian P 4[h]2[/h]Erfurt variant |
|---|---|
| Driver diameter | 1,730 mm |
| Boiler pressure | 12 bar |
| Expansion type | compound |
| Cylinders | two, HP: 440 x 600 mm and LP: 660 x 600 mm |
Power
| Property | Prussian P 4[h]2[/h]Erfurt variant |
|---|---|
| Power source | steam |
| Indicated power | 440 kW (598 PS) |
| Top speed | 90 km/h |
| Starting effort | 47.4 kN |
| Starting effort simple | 56.9 kN |
Calculated values
| Property | Prussian P 4[h]2[/h]Erfurt variant |
|---|---|
| Factor of adhesion | 1 : 5.86 |
| Optimal speed | 56 km/h |
| Power-to-weight ratio | 9.1 kW/t |
| Heating Surface Equivalent | 170.0 m² |
| Cylinder volume/HSE | 1 : 1,140.40 |
| Adhesive weight/Total | 1 : 1.72 |
| Tractive force/Heating surface | 1 : 7.92 |
| Grate area/Heating surface | 1 : 54.35 |
| Firebox/Tube surface | 1 : 12.89 |
