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内燃机车无论在牵引列车，还是在停留期间，柴油机相当长时间在空转工况下工作。因此，降低柴油机在空转工作时的燃油消耗率和减少柴油机空转工作时间是节约燃油、提高内燃机车燃料经济性的主要途径之一。文中介绍了影响燃油消耗率降低的种种原因以及为此所采取的一系列措施。
Diesel engines work in idling conditions for quite a long time, whether they are towing a train or staying in a diesel locomotive. Therefore, reducing the fuel consumption rate of diesel engine during idle operation and reducing the idle time of diesel engine are one of the main ways to save fuel and improve the fuel economy of diesel locomotives. This article describes the various factors that affect the reduction of fuel consumption and the series of measures taken to achieve this.