Engineering Vehicle Hydraulic Drive System Parameters To Match The Traction Characteristic Curve Of The Cad Drawing

Construction vehicle's hydraulic pressure drive system is composed of diesel, hydraulic pump, hydraulic motor and working system, they interact each other. So, choosing reasonable-match of performance parameter and optimal control method to make the vehicle reached the ideal high efficiency state then realized automation become the main contents of the construction vehicle hydraulic pressure drive theory and technology namely vehicle hydraulic pressure dynamics.In this paper, through analyzing and discussing current development of the construction vehicles hydraulic pressure technology and the construction vehicles hydraulic pressure drive system, reasonable-match of performance parameter of the construction vehicles hydraulic pressure loading drive system was studied which is composed of the diesel ,the displacement hydraulic pump , the displacement hydraulic motor and walking system. Then the controlling goal and methods of loading drive system were elicited based on it. Namely, static state is the ideal working state of diesel, the essential of performance parameter matching of hydraulic components is a balance in the pressure, the velocity and the efficiency of them. The paper also brings forward that choosing appropriate velocity under the condition of degrading the pressure to improve the capability and debase the cost of the hydraulic components. Dynamic parameter matching is the best control methods to the working system. Then auto controled and the high efficiency hydraulic infinitely variable speeds drive equipment is used in the tractive vehicles that often received the tempestuously fluctuating loading. In this way the diesel will be able to work in the adjacent static state to make the vehicle out put the maximal average power and realize the automation and intelligentization.Traction characteristic is the basal criterion of estimating the traction performance and fuel economy of the engineer machinery. So the traction characteristics of hydraulic drive systems of the construction vehicles were analyzed and studied using methods of the dynamics, the kinematics and reasonable key parameters-match of hydraulic drive system together with the efficiency of the whole system. Last, the...