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内燃机是动力源；也是污染源，国外为了防止公害，对内燃机尾气净化进行了大量的研制工作。六十年代以来，国外金属矿山大力发展能源独立、能量利用率高、机动灵活、生产效率高的柴油无轨设备。这种设备在实现“四个现代化”的进程中无疑地必将日趋应用于地下作业，柴油无轨设备进入井下使用的关键是废气净化问题。内燃机废气净化有机内和机外净化等措施。催化法具有效率高、操作简单、使用方便等特点，是一种
The internal combustion engine is a power source; it is also a source of pollution. In order to prevent public hazards abroad, a large number of research and development work on exhaust gas purification of internal combustion engines has been carried out. Since the 1960s, foreign metal mines have been vigorously developing diesel trackless equipment with independent energy sources, high energy utilization rate, flexibility, and high production efficiency. In the course of realizing the “four modernizations”, this equipment will undoubtedly be increasingly applied to underground operations. The key to the use of diesel trackless equipment in underground operations is the issue of exhaust gas purification. Internal combustion engine exhaust gas purification organic and external purification and other measures. The catalytic method is characterized by high efficiency, simple operation and convenient use.