美国康明斯柴油机因其良好的经济性、可靠的稳定性以及简便的操作性,在铁路空调发电车上得到了非常广泛的应用。通过长期检修实践,就该机在分解、部件检修、组装、测试过程中存在的问题,进行了原因分析并提出了具体的改进措施。 US Cummins diesel engine because of its good economy, reliable stability and ease of operation, in the railway air-conditioned electric car has been very widely used. Through long-term overhaul practice, this paper analyzes the reasons for the problems during the decomposing, overhauling, assembly and testing of the aircraft, and puts forward some specific measures for improvement.