This paper establishes the simulation model of the electronic unit pump diesel engine with Matlab/Simulink and AMESim. Provide a theoretical basis for the study of electronic unit pump diesel. The diesel model is built with Matlab/Simulink simulation software and the electronic unit pump is constructed in AMESim environment. To evaluate the model, a co-simulation method with AMESim/Simulink is used. The simulation results show the model is available. And it is significant in theoretical study of electronic unit pump diesel.

This paper establishes the mathematical model of the volume speed-modulating system and simulates dynamically with Matlab/Simulink. Provide a theoretical basis for algorithm of close loop control [ of the three variables which are diesel engines, variable pump and variable motor. Use PID control algorithm, through simulation and analysis, find out the parameter optimization adjustment rule [2,, seek matching operation between three variables. Provide a theoretical basis for the study on dynamic system of full-hydraulic loaders and have very important practical significance in realizing high efficiency energy saving and reducing energy consumption.

In order to improve the power performance and fuel economy performance of powered platform lorry, this paper analyses the characteristics of hydraulic system and engine to make three-close-loop control strategy. Its physical model is built with AMESim simulation software and the three-close-loop control strategy controller for the system is constructed in Matlab/Simulink environment. To evaluate the three close-loop control strategy, a co-simulation method with AMESim/Simulink is used. The simulation results show the control strategy is effective to improve the efficiency of the hydraulic drive system, the utilization of engine power, and the life of hydraulic components.

In order to study the platform lorry’s travel and drive system, based on the prototype of real platform lorry，the system was properly simplified in engineering application under the circumstance of fully satisfication for control strategy. A method of test-bench contruction based on three variables of engine, pump and motor was provided, furthermore, detailed analysis and calculation for the selection and matching of system major parts was carried out, and the test-bench of the platform lorry’s travel and drive system was established. The test-bench mentioned above could also be used for the hydraulic system laboratory research of platform lorry or other similar models.