This paper analyses the general disposal and technical parameter of the new hydraulic exchanging direction shunting diesel locomotive which fits metallurgy enterprise railroad transportation.
介绍了新开发的适合冶金企业调车作业的液力换向内燃机车的总体布置、主要技术参数。
The first DF 4d diesel shunting locomotive had passed acceptance test and put to use in local railway of Luoyang in June 1999.
1999年6月，首台东风4d型调车机车通过验收并于洛阳地方铁路正式运营。
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