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Pages 50-55

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From page 50...
... 42 Test Rack Data Representing a Train in Pneumatic Mode with Rear DP Many trains are run with a DP locomotive at the rear of the train in lieu of an EOT device. If an emergency brake application is initiated by an air hose separation that occurs in the rear half of the train, on detection of loss of BPP the rear DP locomotive transmits a signal to the lead locomotive.
From page 51...
... 43 FIGURE F-9 Pneumatic system with rear DP or two-way EOT after air hose separation at first car behind the lead locomotives of a 150-car test rack. Brakes fully actuated after 16 seconds.
From page 52...
... 44 FIGURE F-10 ECP-only brake system. Air hose and ECP cable separation, 75 cars from rear of a 150-car test rack.
From page 53...
... 45 FIGURE F-11 Conventional head-end-powered train or radio distributed power train (where the remote is ahead of the POD) with the POD occurring 75 cars from the rear of the train.
From page 54...
... 46 FIGURE F-13 ECP-OL train with the POD occurring 75 cars from the rear of the train. Car numbers refer to the car position trailing the POD.
From page 55...
... 47 the brake cylinder applications when the BPP drops. This can be seen on Car 40, where the car's emergency portions kick in at some point after the ECP braking has been initiated.

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