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(一) 概述铁路牵引动力产品最主要的技术指标莫过于可靠性,这是它的特殊用途所决定的。然而,我国内燃机车牵引电机产品的可靠性与国际先进水平相比差距还很大,尽管经过几年的改进,可靠性有很大提高,但至今仍然存在大量的问题。牵引电动机可靠性差的原因很多,但归结起来,主要是设计指标、结构、工艺水平、材料、使用及管理问题,还有产品生产过程(包括修理过程)中的质量问题,特别是组装质量问题。实践经验表明,产品的质量问题是目前产品可靠性差的重要因素,或者说是提
(A) Overview The most important technical indicator of railway traction power products is reliability, which is determined by its special purpose. However, the reliability of traction motor products for diesel locomotives in our country is far behind the international advanced level. Although the reliability has been greatly improved after several years' improvement, a great deal of problems still exist. There are many reasons for the poor reliability of a traction motor, but in summary it is primarily a matter of design specifications, structure, workmanship, materials, use and management, as well as quality issues in the manufacturing process, including repair processes, especially assembly quality issues. Practical experience shows that the quality of the product is an important factor in the current poor product reliability, or to mention