紧急位——在此位置,自动制动阀上的机械阀动作,列车管压力排向大气, 触发EPCU中BPCP及机车管路中的紧急排风阀动作,产生紧急制动作用。
Electronic Brake Valve
电子制动阀EBV
单独制动作用位置:
其手柄包括运转位,通过制动区到达全制动位。手柄向前推为制动 作用,向后拉为缓解作用。20CP响应手柄的不同位置,使制动缸 产生作用压力为0~300kPa.当侧压手柄时,13CP工作,可以实现 缓解机车的自动制动作用。
同时在ER备用情况下与16CP共同动作来实现均衡风缸的压力控制。 13控制部分同时对DBTV里的BOBU阀进行控制,来实现备用模式下的单 缓功能。
ERBU (16)
MR ERBU
13
13 LRU BAIL ACTUATED
MV13S MV 13S
ERBU
EX
A3 13 T
EX
A1 A2 13 C/O
EPCU是安装有可替换单元(LRU)的集成模块,每一LRU包括联接其控制 的机车功能的气动元件。对于“智能”LRU,其上也有节点,这些节点包 括连接他们功能的电子装置和软件。
EPCU工作逻辑
自动制动阀→ERCP →均衡风缸→BPCP →列车管→16CP →作用管→BCCP →闸缸
↘ DBTV ↗
单独制动阀→20CP →单独作用管→BCCP →闸缸 ↘13CP →IPM →作用管→大气
DP LEAD - This green LED is an indication that a given locomotive is in Distributed Power LEAD mode . DP REMOTE - This green LED is an indication that a given locomotive is in Distributed Power Remote mode. DP TX A - This amber LED is an indication that a given locomotive is transmitting DP radio messages on Radio A. DP TX B - This amber LED is an indication that a given locomotive is transmitting DP radio messages on Radio B. DP RX - This green LED is an indication that a given locomotive is receiving DP radio messages. DP COMM INT - This red LED is an indication that a given locomotive is experiencing DP radio communication link failure. DATALINK FA - This red LED is an indication that on a given locomotive the IPM is unable to communicate with the locomotive computer (ILC, IFC, ICE etc.) via the LSI (either DP or EAB) RS-422 (HDLC) datalink. NETWORK FA - This red LED is an indication that the LOCOTROL EB or the CCB II system is experiencing internal communication problems (between IPM, EPCU and EBV) over the LON network. EBV FAIL - This red LED is an indication of a failure on the Electronic Brake Valve (EBV) of the LOCOTROL EB/CCB II system. The specific failure could be electronic or pneumatic or both. EPCU FAIL - This red LED is an indication of a failure on the Electro-Pneumatic Control Unit (EPCU) of the LOCOTROL EB/CCB II system. The specific failure could be electronic, pneumatic, or both. EAB BACKUP - This amber LED is an indication that the LOCOTROL EB/CCB II system has activated one of its backup mode of operation for the Electronic Air Brake functionality. For Example, failure of the primary Main Reservoir Transducer (MRT) has occurred and the system has switched to the secondary MRT.