Abstract Based on the vehicle theory and operation characteristics of some special purpose vehicles, the feasibility of using backup power in special purpose vehicle is analyzed using the example of high pressure washing vehicle, The solution was put forward and the economy comparison is made between superstructure system equipped with assistant engine and superstructure system with backup power. Key words special purpose vehicle: backup power: upload: transmission system~ economy%根据汽车理论及某些专用汽车的作业特点,以高压清洗车为例,分析了专用汽车上装传动系统充分利用汽车后备功率的可行性,并针对可能出现的问题提出了解决方法,最后将配备副发动机的上装传动系统与充分利用后备功率的专用汽车上装传动系统的经济性进行了分析比较。
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