【作者】

Wenzheng Zhang,Lin Ren,Changqing Wang

【摘要】

论文已在上海2013年CIMAC大会上发表，论文版权归CIMAC所有。 Marine diesel engine face the double pressure from both the energy sources and more strict IMO emission regulation. According to a Chinese engine builder's commission, SMDERI developed a new medium speed marine diesel engine together with FEV. The new medium speed marine diesel engine must satisfy the high endurance, the fuel consumption and IMO emission regulation at the same time. Present the technical solution to meet the requirement of good BSFC and NOx emission. The success development of the new medium speed marine diesel engine will promote Chinese medium speed marine diesel engine to new technical level. This article present the combustion development of the new medium speed marine diesel engine: through performance and combustion simulation, to define the main characteristic of performance. To define the suitable miller timing, together with one stage high compression turbocharger; Through CFD and DOE technique, define the experiment case of combustion system, which contain the piston bowl, the nozzle pattern and so on. The experiment was carried out based on SCE21/32, which is specially developed for the new technical investigation and new engine combustion de-elopement. Different miller timing, different piston bowl and nozzle pattern were test, and the performance of the common rail fuel system have been studied in de-tail. Through SCE21combustion and 6CS21/32 performance test, the experiment results presented show that, for the new medium-speed engine of CS21, the NOx emission can meet the IMO Tier2 emission regulation, and the fuel consumption can achieve 185g/kW·h at the same time.

【会议名称】

第27届CIMAC会议

【会议地点】

上海

【下载次数】

2

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