Timeline for What does the phrase "electrically controlled and pneumatically operated" mean?
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| May 29, 2020 at 22:54 | comment | added | Michael Harvey | One reason EP brakes were attractive is that they reduced stopping distance, so trains could run harder, and brake later, between stations, and thus more trains per day could be run on existing infrastructure, so more tickets could be sold. | |
| May 29, 2020 at 10:32 | comment | added | Michael Harvey | Railway trains (electric multiple units mainly) used to have 'straight air', or Westinghouse brakes. The brakes were applied by air pressure, using a 'train pipe' charged with pressurised air. If the driver lowered the pressure in the train pipe, a valve on each coach opened and compressed air from reservoir tanks operated pistons to force friction shoes onto the wheel treads. The reduction of train pipe pressure took a certain time to propagate along the train. and electro-pneumatic air brakes were developed, where solenoid valves on each car operated instantly and all at once. | |
| May 28, 2020 at 15:06 | history | answered | Harper - Reinstate Monica | CC BY-SA 4.0 |