Modelling of a Marine Diesel engine
Use the provided Matlab/Simulink zero-dimensional code to simulate the steady state operation of one cylinder of the MAN Diesel and Turbo 9K90MC engine. The engine MCR point is 41,130 kW at 94 rpm. The model is calibrated at 100% load. The model is described in a publication that can be downloaded by the following link: http://www.mdpi.com/1996-1073/8/6/5738
Task 1:
Provide a concise description of the model types employed for the simulation of marine engines and ship propulsion systems critically reviewing the advantages and drawbacks of each model category. Discuss the applications where each model type can be used and present their limitations. Use appropriate references.
Task 2:
- Modify the model to calculate the following engine parameters: brake specific fuel consumption (g/kWh) and the engine CO2 emissions (kg/kWh). Use additional input parameters if needed.
- Perform runs for 100% load and compare the derived engine parameters with the manufacturer’s data.
- Calibrate the model and perform simulation runs for 25, 50 and 75% loads. Compare the derived engine parameters with the respective manufacturer’s data.
- Perform parametric runs at one engine operating point by changing i) injection timing and ii) another engine setting that you will select). Present plots for the variation of the engine main operating parameters and discuss the results for each case.
Task 3:
Prepare a presentation to briefly describe the provided model characteristics, the used mathematical equations as well as the work, results and the discussion of Task 2. Use embedded audio in each slide to present your work.
Recommended reading and material
Engine project guide (www.mandieselturbo.com)
Computerised Engine Application System-Engine Room Dimensioning (CEAS-ERD) http://mandieselturbo.com/ceas/index.html
http://pim.sagepub.com/content/224/3/193
http://pim.sagepub.com/content/early/2013/09/10/1475090213498715
http://www.sciencedirect.com/science/article/pii/S0306261915006340
http://www.sciencedirect.com/science/article/pii/S0306261914005686
