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what is APU(Auxilliary Power Unit)??? 1 Answers what is APU(Auxilliary Power Unit)??? Apr 16 2017 (21:49) Blog Post# 2238497-0 TAGEERUANUBHARADWAJ^ Added by: TAGEERUANUBHARADWAJ^ Apr 22 2017 (19:40) What is APU(AUXILIARY POWER UNIT)??? APU is a self-contained system with its own small diesel engine coupled to low capacity compressor and alternator to maintain main reservoir pressure, charge battery, operate driver cabin HVAC system and other small loads as per customer requirement. The main engine is started only when the locomotive is actually required for movement or traction. The control system on the locomotive continuously monitors the locomotive battery status and other important parameters like MRPR, Loco IDLING status, Engine temperatures etc. If the loco idling time is more than 10 minutes,... more... |