Based on the specific condition of railway transportation in China, this paper describes systematically the technical and economic analysis of the train weight, traffic density,rational range of traffic volume and related problems for operating a heavy haul unit train.

In order to avoid the occurrence of these problems,we improved the design and a new type ultrasonic cleaning equipment for the cleaning of air-conditioner on train.

The Research and Design of Distributed Intelligent Control System for Electric Locomotive Driving Unit;