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一、前言东风4型机车是我国自行设计研制的第一代大功率内燃机车,现已有近500台机车在铁路上运用。自这种机车生产以来,暴露了一些问题,通过不断地研究试验,这些问题逐步得到了解决。但是,“跑、冒、滴、漏”这样一些“皮肤病”尚未很好解决。实质上,机油与燃油的漏泄不仅导致机器油耗高,而且污染环境,侵蚀邻近电气设备的绝缘体,影响其使用寿命;冷却水的不正常漏泄则缩短机车整备周期,由此造成机破影响
I. Introduction Dongfeng 4 locomotive is the first generation of high-power diesel locomotive designed and developed by our country. Nearly 500 locomotives have been used on the railway. Since the production of such locomotives, some problems have been exposed and these problems have been gradually solved through continuous research and experiments. However, some “skin diseases” such as running, running, dripping, and leakage have not been solved yet. In essence, the leakage of oil and fuel not only lead to high machine oil consumption, but also pollute the environment, erosion of the insulation adjacent to electrical equipment, affecting its service life; cooling water, abnormal leakage is to shorten the cycle of locomotive repair, resulting in machine breakage