| With the global warming and lack of resources,energy and environmental protection has become a major event of the national economy and the people’s livelihood,but also has become the theme of scientists in various countries.As the vehicle and the walking machinery which is closely related to our life,with the increase of the domestic quantity,it has also become the target of our research.Especially from the last century in 80 s to the beginning of this century,the global construction machinery has been rapid development,and the development of construction machinery in the China is a microcosm of the development of global engineering machinery,especially the full implementation of the demand of hydraulic excavator with Chinese high-speed railway construction,mining,real estate and infrastructure construction is increasing quantity rapid increase,so the application of new energy-saving technology of excavator is imperative,is the priority among priorities of the excavator production factory.In this paper,the hydraulic excavator China mainstream market Kawasaki system as the main object of study,according to the history of the development of energy-saving technology at home and abroad and the present situation,first through the analysis and comparison of different ways of excavator flow control,to get the full control flow control flow is the best,then launches the detailed research on it,which including such full electronic control is related to flow of excavator hydraulic pump,valve and other important components of the control one by one analysis,through the matching of engine and hydraulic pump to increase the energy transfer efficiency and reduce the pressure loss of the system,the implementation of energy recycling and other aspects to reach the expected energy-saving effect of electrical control technology.In the course of the study to the host as the carrier of the key hydraulic components of mathematical modeling and analysis of hydraulic system and the use of AMESim software for a variety of working conditions and operating habits to establish the simulation model of a large amount of data analysis,through the analysis and comparison of various kinds of energy saving technology in the implementation process,advantages and disadvantages and the height of the degree of commercialization.Therefore,it is concluded that it is the most economical andeffective way to save energy by increasing the electric control technology to participate in energy recovery.Through the study of this topic is not only for their daily work carried out a thorough summary,have an in-depth understanding of theoretical knowledge and various hydraulic electrical components,technical personnel and the results of the study can give reference to the same industry and help in the study of the similar problems. |