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作者： HU Yi-huai, HUANG Xue-wu, ZHENG Hua-yao (Merchant Marine College, Shanghai Maritime University, Shanghai 200135, China)

＜正＞An engine room simulator was developed to simulate the behaviors of a 2700 TEU container ship under different performance failures and different running conditions. This paper introduces the mathematical models of the main diesel engine including chamber combustion model, variable injection timing model and hull-propeller-engine model. A real time simulation algorithm is described to meet the demands of rapid response, long running duration and little error accumulation of the simulator. Typical performance failures, structural faults and boundary conditions of main engine were simulated and their simulation models are briefly mentioned in this paper. Seafarers’ operation to the simulated failures can be assessed and operation-assessing algorithm is also introduced in this paper.

关键词： failure simulation engine room simulator marine diesel engine

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季节因素对二冲程船用柴油机性能参数及排放影响研究

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哈尔滨工程大学学报（英文版） 2023年第4期22卷 795-808页

作者： Bulut Ozan Ceylan Department of Maritime Transportation and Management engineering Bandirma Onyedi Eylül UniversityBandirma 10200BalikesirTurkey

In comparison to onshore facilities,ships,and their machinery are subjected to challenging external influences such as rolling,vibration,and continually changing air&cooling water temperatures in the marine ***,these factors are typically neglected,or their consequences are deemed to have little effect on machinery,the environment,or human *** this study,seasonal air&seawater temperature effects on marine diesel engine performance parameters and emissions are investigated by using a full-mission engine room simulator.A tanker ship two-stroke main engine MAN B&W 6S50 MC-C with a power output of 8600 kW is employed during the simulation ***,due to its diverse risks,the Marmara Region is chosen as the application area for real-time average temperature *** on the research findings,even minor variations in seasonal temperatures have a significant influence on certain key parameters of a ship’s main engine including scavenge pressure,exhaust temperatures,compression and combustion pressures,fuel consumption,power,and NOx-SOx-COx *** instance,during the winter season,the cylinder compression pressure(pc)is recorded at 94 bar,while the maximum pressure(pz)reaches 110 *** the summer,pc experiences a decrease of 81 bar,while pz is measured at 101 *** emission of nitrogen oxides(NOx)exhibits a measurement of 784 parts per million(ppm)during winter and 744 in *** concentration of sulfur oxides(SOx)is recorded at 46 ppm in winter and 53 in *** the current state of global warming and climate change,it is an undeniable fact that the impact of these phenomena will inevitably escalate.

关键词： Marine environment Air&seawater temperature Shipping emissions Marine diesel engine engine room simulator Fuel consumption Turkish Straits

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