Optimization Research On Hydraulic Hybrid System Of A Truck Crane

With the continuous consumption of conventional fuel, increasing of inventoryof vehicles and the establishment of relevant laws and regulations, the problem ofenergy and environment protection attracts people gradually. Hydraulic hybridtechnology, which has loads of advantages including rapid responds, large density ofenergy reserved component and so forth, especially is suitable for urban bus andengineering machinery which can be classified into middle or heavy duty vehicle.Truck crane can be considered as a more appropriate structure to be reconstructedfor hybrid because of its plentiful congruent characteristics containing huge mass,high installed power output, and also frequently running in city road whichapparently can lead to a huge waste of energy, low fuel efficiency of engine and alsoserious pollution.This research mainly focuses on parameter matching and optimization methods,and also refers to vehicle structure and relevant critical technologies.A detailed structure of front paralleled hydraulic hybrid truck crane has beenpresented. And the working principle has been analyzed.The driving and braking working principle of integrated vehicle have beenanalyzed, and the corresponding mathematical model of integrated vehicle has beenestablished hereby, and the simulation model of integrated truck crane and somerelevant important components has been established in AMESim simulationenvironment afterwards. The energy recovery rate and fuel saving rate have beencalculated in integral circulation by simulation model.A co-simulation platform, which is named as AMESimApp, has beendeveloped and designed by Excel-VBA and AMESim based on MVC schema, andthe control and adjustment for key parameters of hybrid system have been implemented accordingly. And then the optimized parameter matching adaptive forintegrated vehicle has been selected by comparison in output characteristics of the simulationmodel.The experiments on power performance and fuel economy of integrated vehiclehave been conducted on experimental prototype, and some relevant data also havebeen through analysis. The test data are close to simulation results, which can be areasonable verification for rationality of proposed structure and accuracy oftheoretical research.AMESimApp, which is known as the presented co-simulation platform in thisresearch, has simpified the system optimization that has practical significance. And aremarkable basis can be provided for future hybrid truck crane research anddevelopment, especially on components selection and system optimizing.