Research on pump-engine match in hydraulic excavator

As for hydraulic excavator routine three lever power models,pump engine match principles and realization methods are expounded,then the characteristics of load sense system are analyzed,and the conflict between load sense control and pump engine match is clarified.The hydraulic system based on pump engine match is proposed,furthermore the new viewpoint,the computer automatic regulating flow and power of all motion components with main control valve according to pump engine match principle,is proposed for the first time and some formulations are deduced.