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    NFR takes steps to cut down consumption of fossil fuel

    Normally a diesel engine consumes about 25 ltrs of diesel per hour during idling condition i.e. when the train is not moving

    Guwahati:  The Northeast Frontier Railway (NFR) in its latest initiatives has cut down the use of fossil fuel in line with the environment-friendly policies of the Railway Ministry.

    This is expected not only to cut down the train operation cost but also the precious foreign exchange of our country which is needed to import fossil fuel apart from reducing air pollution.

    “Auxiliary Power Unit” (APU) have already been fitted in 94 out of 399 diesel locomotives in NFR for saving of diesel fuel consumption when the engine is kept in idle condition. Normally a diesel engine consumes about 25 ltrs of diesel per hour during idling condition i.e. when the train is not moving. But with the use of APU the idling consumption gets reduced by 1/10 to just 2.5 ltrs per hour. Thus huge quantity of diesel oil can be saved. 

    Subhanan Chanda, Chief Public Relations Officer (CPRO) said, “APU is a self-contained system with its own small diesel engine coupled to low capacity compressor and alternator to maintain the main reservoir pressure, battery charging, operate HVAC system in driver’s cabin and other small loads as per requirement. The main engine gets started only when it is actually required for movement.”

    He added that the central control system of the locomotive continuously monitors the battery status, engine temperature, idling status etc. If the engine idling time is more than 10 minutes, the system automatically shuts down the main engine and run the APU engine.

    APU has a baby compressor, which produces compressed air and feed locomotive main reservoir to compensate for the formation leakages. When the APU engine is in operation, the system continuously monitors the critical parameters and ensures that they are within limits. If any of the monitored parameters deviate from the limits, the main engine starts automatically by stopping the APU engine.

    It may also be mentioned here that few NFR trains have already started running by using HOG technology where the diesel generators of LHB rakes are kept in shut down condition during their journey in the electrified area to save fossil fuel.



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