|
|
| Re: Air Brakes/BIE Question (697613) | |||
 |
|||
| Home > SubChat | |||
|
[ Read Responses | Post a New Response | Return to the Index ] |
|
||
|
Re: Air Brakes/BIE Question |
|
|
Posted by BLE-NIMX on Sat Oct 25 00:13:40 2008, in response to Air Brakes/BIE Question, posted by gbs on Fri Oct 24 23:56:25 2008. I assume you meant SMEE type straight air systems so here it goes in short. For a train to be able to release its brakes the brake pipe must be charged. On SMEE cars, when that happens, an emergency port closes and seals off the main reservoir from the brake cylinders, a control pipe or straight air pipe takes over charging and releasing the brake cylinders, the emergency contactor closes and allows electric brake circuits to assist trainline application and release, and service braking can be used at will. WHen the train is put into emergency, the emergency contactor opens cutting all power and dynamic braking from traction motors, backfeeding the straight air pipe through spotting wire and the emergency porting reopens and admits main reservoir air into the cylinders, all almost simultaneously. It is air from the main reservoir that stops the train in emergency, and when the train is fully charged. |
|
(There are no responses to this message.)
|
|