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Prussian S 4
In order to take advantage of superheated steam technology that was just emerging, an example of the S 3 was converted in 1898 to test this technology. It was the world's first express locomotive of this type and the ...
| Prussian S 4Remove | |
|---|---|
| Variant | smokebox superheater |
| Built | 1902-1909 |
| Manufacturers | Borsig;Henschel;Linke-Hofmann;Humboldt |
| Wheel arrangement | 2B |
| Gauge | 1435 mm |
| Length | 18210 mm |
| Service mass | 54470 kg |
| Top speed | 100 km/h |
| Power | |
| Engine |
General
| Property | Prussian S 4smokebox superheater |
|---|---|
| Built | 1902-1909 |
| Manufacturers | Borsig, Henschel, Linke-Hofmann, Humboldt |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Prussian S 4smokebox superheater |
|---|---|
| Length | 18.21 m |
| Wheelbase | 7.20 m |
| Service mass | 54.5 t |
| Adhesion mass | 32 t |
| Total mass | 103.5 t |
| Rigid wheelbase | 2.60 m |
| Axle load | 16 t |
| Water capacity | 13,000 l |
| Fuel capacity | 5 t (coal) |
Boiler
| Property | Prussian S 4smokebox superheater |
|---|---|
| Grate area | 2.27 m² |
| Firebox surface | 10.6 m² |
| Tube heating surface | 90.34 m² |
| Evaporative heating surface | 100.94 m² |
| Superheater surface | 30.75 m² |
| Total heating surface | 131.7 m² |
Power plant
| Property | Prussian S 4smokebox superheater |
|---|---|
| Driver diameter | 1,980 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 540 x 600 mm |
Power
| Property | Prussian S 4smokebox superheater |
|---|---|
| Power source | steam |
| Indicated power | 710 kW (965 PS) |
| Top speed | 100 km/h |
| Starting effort | 90.1 kN |
Calculated values
| Property | Prussian S 4smokebox superheater |
|---|---|
| Factor of adhesion | 1 : 3.48 |
| Optimal speed | 48 km/h |
| Power-to-weight ratio | 13.0 kW/t |
| Heating Surface Equivalent | 215.4 m² |
| Cylinder volume/HSE | 1 : 1,275.65 |
| Adhesive weight/Total | 1 : 1.70 |
| Tractive force/Heating surface | 1 : 14.29 |
| Grate area/Heating surface | 1 : 58.01 |
| Firebox/Tube surface | 1 : 8.52 |
| Total/Superheater | 1 : 3.28 |
