Hydraulic Propulsion Ship Design And Efficiency Research

In recent years, with the development of modern shipping towards macro-scale operation technology, specialization and speed-up, as the traditional propulsion mode, the diesel propulsion mode can not satisfied the modern shipping, at the same time, the cabin became more and more smaller because the diesel occupied much space of the cabin. And then, parallel connection of diesels has been worked. At present, there were two methods about the design of propulsion, that is, mechanical propulsion and electric propulsion. Mechanical propulsion has the advantage of transmission efficiency. Simultaneity, there are many disadvantages, for example, bad flexibility, lower weight power ratio, inappropriate disposal of cabin.The driving of hydraulics have much predominance, such as the big driving power, adapting to the heavy carrying, adjusting velocity soon, the safety, being easy to concentrate the control, and the hydraulic source can be used for many machines. So, Integrated Hydraulic Propulsion was put forward in this paper.The design scheme of Hydraulic Propulsion Ship was put forward in this paper. In this foundation, this thesis analyses the design of the hydraulic driving system in Hydraulic Propulsion ship, and then, carries on the summary and gives some useful advice, At last, modeling and simulating for this system.In this paper, the author gives some suggestion such as the choice of the hydraulic source, the choice of the motor, the way of adjusting velocity, and the analysis of thermal system. After that, the author gives the principle of components of the hydraulic driving system including pump, motor, propeller and diesel engine...etc, and gives theoretical analysis of main parameters.For foreseeing the dynamic performance and the static performance of this system, the thesis established the mathematics model and analyzed with the software of Simulink. By analyzing the result, the author put forward the suggestions that improve the system's performance.The efficiency is a key point for hydraulic propulsion system. In this paper, the efficiency model is established with Matlab/Simulink. And the author gives useful analysis of main parameters on impact of system efficency. It will afford the convenience for the behind analysis.