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简要介绍了东风11型准高速客运内燃机车试制、试验及正线运行情况，初步分析了主要试验结果，阐述了机车存在的一些主要质量问题，提出了改进意见。结论指出：东风11型机车的开发是成功的，建议对机车做进一步的改进，其推广应用前景广阔。
This paper briefly introduces the trial production, test and positive operation of Dongfeng 11 quasi-high-speed passenger diesel locomotive. The main test results are analyzed primarily. Some main quality problems existing in the locomotive are expounded. Suggestions for improvement are given. The conclusion points out that the development of Dongfeng 11 locomotive has been successful. It is suggested that the locomotive be further improved and its application prospect is broad.