ČSD series M 220.3
| ČSD series M 220.3 | |
|---|---|
| Numbering: | M 220.301-303 |
| Number: | 3 |
| Manufacturer: | Tatra Mountains Kopřivnice |
| Year of construction (s): | 1929 |
| Retirement: | 1945 |
| Axis formula : | (1A) (A1) |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 301: 18,900 mm 302-303: 21,000 mm |
| Bogie axle base: | 3,100 mm |
| Total wheelbase: | 301: 14,470 mm 302-303: 16,300 mm |
| Empty mass: | 301: 34.2 t 302-303: 38.8 t |
| Service mass: | 301: 40.3 t 302-303: 44.8 t |
| Top speed: | 50 km / h |
| Installed capacity: | 2 × 100 hp |
| Driving wheel diameter: | 1,000 mm |
| Wheel diameter: | 940 mm |
| Motor type: | Tatra Mountains |
| Motor type: | 6-cylinder four-stroke petrol engine |
| Rated speed: | 1200 rpm |
| Power transmission: | mechanical transmission type Winterthur |
| Seats: | 301: 68 302-303: 82 |
| Classes : | 3. |
The class M 220.3 railcars were four-axle, twin-engine benzene - mechanical railcars for mixed traffic of the former Czechoslovak State Railways (ČSD). They were among the first types of twin-engine motorized railcars with mechanical power transmission from the ČSD.
History and commitment
After sufficient practical experience had been gained with the prototype vehicles ( M 230.0 and M 220.2 ), the task for the manufacturer Tatra Kopřivnice was to technically solve the synchronization of two combustion engines in a railcar.
Within the series, there were dimensional and mass differences between the prototype car M 220.301 and the subsequent M 220.302–303 . What all vehicles had in common was the mechanical equipment and design of the car body.
All that is known about the operation is that all three vehicles were stationed in Rumburk .
DR 136 420-422
After 1938 the railcars were taken over by the Deutsche Reichsbahn and designated as VT 136 420-422 . Due to the fuel quota, they were soon parked and converted into sidecars. The only information about further use is that an unidentifiable example was still running in 1963 as a B4i 211-203 car on the Deutsche Reichsbahn .
technical features
The vehicles were powered by two six-cylinder four-stroke gasoline engines from Tatra. The motors had been specially developed for this series and represented a further development compared to those of the M 220.2 series. The mechanical transmission of the Winterthur type was used for the mechanical power transmission. This transmission was four-speed and had only one input and one output shaft.
On the input shaft, four gearwheels were constantly in mesh with the respective gearwheels of the output shaft; these were rotatably mounted on it. Each gear on the output shaft was split in two (see sketch) and had a cavity on the inside. A ring friction clutch was mounted in this cavity, which was pressed against both parts of the transmission wheel when the appropriate gear ratio was selected. Each clutch was mounted on the wedge-shaped output shaft and could thus transmit the torque. The energy required for the clutch was supplied by an oil pump. The gearbox has a reversing gear connected downstream.
Each engine was stored low in the bogie so as not to protrude into the driver's cab. The torque only intervened on the second axle of the bogie. With a relatively large wheelbase (3100 mm), the pivot was roughly in the middle of the bogie.
The car body was basically the same as that of the M 220.2 with a transition bridge and no central exit door. The driver's cabs could be closed by roller blinds at both ends of the vehicle and separated from the entry area by transverse walls. The passenger compartment was designed as a large room and was heated by the exhaust gases from the internal combustion engine. Compared to the prototype car M 220.301 , the two cars M 220.302–303 had 14 more seats and weighed more.
See also
literature
- Jindrich Bek, Josef Janata, Jaroslav Veverka: Malý atlas lokomotiv 2. Elektrická a motorová trakce. Nadas Publishing House, Prague 1969
- Andreas Knipping, Ingo Hütter, Hansjürgen Wenzel: Locomotives "Heim ins Reich" , EK-Verlag, Freiburg 2009; ISBN 978-3-88255-131-0 .
Individual evidence
- ^ Jindrich Bek, Josef Janata, Jaroslav Veverka: Malý atlas lokomotiv 2. Elektrická a motorová trakce. Nadas Publishing House, Prague 1969
- ^ Andreas Knipping, Ingo Hütter, Hansjürgen Wenzel: Locomotives "Heim ins Reich" , EK-Verlag, Freiburg 2009; ISBN 978-3-88255-131-0 Re-drawing statistics