Due to the limitation of cost, the contradiction in the technical development of small excavators is that the technology needs to be innovated, while the cost is low, which will inevitably lead to the uneven technical level of small excavators in the market. Especially for the power loss of hydraulic system, the core technology of power matching control for engine and hydraulic pump is still monopolized by some large companies, and the technical threshold is high, which limits its popularization and application in small excavators.
Through the analysis, we can see that there is a lot of room for improvement of small excavators in China. To improve the competitiveness of products, what is needed is not only the display with more complete functions, but also the control technology to realize energy saving and emission reduction, especially the power matching control of engine and hydraulic pump, so that the diesel engine can work in the economic working area under various load power conditions, so as to improve work efficiency and reduce fuel consumption. The introduction of electric control pump on small excavator is very important. The design of electric control system on small excavator is very important for the development of control technology of hydraulic pump and breaking the monopoly of technical threshold. The design of electric control system of small excavator should realize the comprehensive improvement of throttle control system, pump control system and electric control instrument system.
