Performance Simulation Of Marine Diesel With MATLAB

Diesel transient simulation is an indispensable part of the simulation of ship propulsion plant. Diesel performance analysis also needs to do the performance simulation work. Filling-and-emptying method is widely used in the steady simulation of diesel engine. Quasi-steady method is widely used in the transient simulation of diesel engine, especially in ship propulsion plant simulation. MATLAB is powerful software in the simulation of control system, and there are more and more ship propulsion plants being simulated with MATLAB.The main topic of this thesis is how to establish universal programs and models with MATLAB software, to simulate the steady and transient performance of diesel engines. For the steady performance simulation in MATLAB, a set of graphical user interfaces is made with GUIDE, which is a graphical user interface development environment, to input the data of the engine, and a program with filling-and-emptying method is developed with MATLAB language. Inputting the data in the graphical user interfaces, and calling the program, a high-power high-speed engine's steady state performance is simulated.On basis of Simulink , diesel blocks of quasi_steady and performance_map lookup_table methods are analyzed and modeled. With these model blocks, a marine diesel engine is modeled, and its accelerating process is simulated with quasi_steady method. The Diesel Blockset library is established, and you can see it in the Simulink browser.With the graphical user interfaces and the program, the steady state performance of diesel can be simulated very conveniently in MATLAB. With the Diesel Blockset library, using the established diesel blocks is just like using the common blocks in the Simulink, and it is very easy to simulate the transient state performance of diesel engine.