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Bavarian D XI (PtL 3/4)
The D XI, also known by its later designation PtL 3/4, was the most numerous of the Bavarian local railway locomotives. It was designed and built simultaneously by Krauss and Maffei and procured over a period of 19 ye...
General
| Property | Bavarian D XI (PtL 3/4)Remove |
|---|---|
| Built | 1895-1914 |
| Manufacturers | Krauss, Maffei |
| Wheel arrangement | 0-6-2T (Webb) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Bavarian D XI (PtL 3/4)Remove |
|---|---|
| Length | 9.26 m |
| Service weight | 39.1 t |
| Adhesive weight | 31.1 t |
| Axle load | 10.9 t |
| Water capacity | 4,300 l |
| Fuel capacity | 1.5 t (coal) |
Boiler
| Property | Bavarian D XI (PtL 3/4)Remove |
|---|---|
| Grate area | 1.34 m² |
| Firebox surface | 5.26 m² |
| Tube heating surface | 62.44 m² |
| Evaporative heating surface | 67.7 m² |
| Total heating surface | 67.7 m² |
Power plant
| Property | Bavarian D XI (PtL 3/4)Remove |
|---|---|
| Driver diameter | 1,006 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 375 x 508 mm |
Power
| Property | Bavarian D XI (PtL 3/4)Remove |
|---|---|
| Power source | steam |
| Indicated power | 235 kW (320 PS) |
| Top speed | 45 km/h |
| Starting effort | 72.4 kN |
Calculated values
| Property | Bavarian D XI (PtL 3/4)Remove |
|---|---|
| Factor of adhesion | 1 : 4.21 |
| Optimal speed | 19 km/h |
| Power-to-weight ratio | 6.0 kW/t |
| Heating Surface Equivalent | 94.0 m² |
| Cylinder volume/HSE | 1 : 1,193.76 |
| Adhesive weight/Total | 1 : 1.26 |
| Tractive force/Heating surface | 1 : 22.34 |
| Grate area/Heating surface | 1 : 50.52 |
| Firebox/Tube surface | 1 : 11.87 |
