BMBS-APM working system

1

AUTOMATIC PRESSURE MODIFICATION EL-60 VALVE
2

EMPTY
APM RESERVIOR
BC2
BC1
DV
CPB
APM
2.2
3.8
Created by A.srinivas JE/AB/WWS/GTPL/SCR
SENSOR ARM
104mm
Created by srinivas

• AUTOMATIC PRESSURE MODIFICATION-
• APM device is interposed between bogie side frame
  of Casnub bogie and the under frame of wagons.
• APM should sense the gap only at the time of air
  brake application.
• During remaining time it should not be in contact
  with the bogie side frame.

3

LOAD
APM RESERVIOR
BC2
BC1
DV
CPB
APM
3.8
3.8
Created by A.srinivas JE/AB/WWS/GTPL/SCR
Created by srinivas
Created by srinivas
AUTOMATIC PRESSURE MODIFICATION-
It restricts the brake cylinder pressure
coming from the Distributor valve to 2.2 0.25
Kg/cm2 in empty condition of the wagon and allows
the brake cylinder pressure of 3.8 0.1 Kg/cm2
in loaded condition of the wagon. The
factory setting for the movement of the sensor
point is 104mm which is consisting of loaded
empty zone. First 79mmtop-bottom of the sensor
point is for LOADED ZONE the balance 25mm
bottom-top is for the EMPTY ZONE.
4
BOGIE MOUNTED BRAKE SYSTEM
BP HOSE
COAC
COAC
DC
6kg/cm2
Created by A.srinivas JE/AB/WWS/GTPL/SCR
FP HOSE
FP HOSE
FP
ISOLATING COCK
DC
5kg/cm2
3.5kg/cm2
COAC
COAC
BP
BP
CPB
BP HOSE
BP HOSE
6 kg/cm2
APM
NRV
3.8
T FLANGE
DV (WITH OUT PT)
APM RESERVIOR
AR 100 LTRs
ISO.COCK WITH VENT
FLEXIBLE HOSE PIPE
10 BC FOR BOGIE 1 (WITH HANDBRAKE CABLES)
EMPTY 2.2
LOAD 3.8
Created by srinivas
10 BC FOR BOGIE 2
5

Created by A.srinivas JE/AB/WWS/GTPL/SCR