| 摘要:介绍了低速二冲程双燃料船用主机的发展现状，指出气缸润滑油自燃引发不正常燃烧是限制其平均有效压力pme提高的关键因素。研究表明:双燃料主机气缸油自燃引发不正常燃烧的内因有两方面:主机结构特征及工作特性，气缸油破碎、蒸发及自燃特性；而主机工况条件、引燃喷射正时等控制参数、过量空气系数、预混合气均匀度、气缸油消耗率、气缸套表面状况等外因，则是气缸油自燃的触发条件。建议在此基础上开展低速二冲程双燃料船用主机的研发工作。 |
| 关键词: 低速二冲程双燃料船用主机 气缸润滑油 不正常燃烧 |
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| Study on Abnormal Combustion Caused by Cylinder Oil Auto-ignition inLow-Speed Two-Stroke Dual-Fuel Marine Main Engine |
| Feng Liyan,Liu Chao,Wu Yao |
| School of Energy and Power, Dalian University of Technology, Liaoning Dalian 116023 |
| Abstract:The development status of low-speed two-stroke dual-fuel marine main engines is introduced. It is pointed out that the abnormal combustion caused by cylinder oil auto-ignition is the key problem to impede the increase of mean effective pressure of the engine. Research results show that abnormal combustion caused by cylinder oil auto-ignition of dual-fuel main engine has two internal causes, which are construction and operation characteristics of main engine,as well as cylinder oil crush, evaporation and auto-ignition characteristics; several external causes, including control parameters such as main engine operation condition and pilot injection timing, excess air coefficient, uniformity of pre-mixtures, consumption rate of cylinder oil, as well as surface condition of cylinder liner, which are the trigger conditions of cylinder oil auto-ignition. It is suggested that the development of low-speed two-stroke dual-fuel marine main engine should be carried out based on the these research results. |
| Key words: low-speed two-stroke dual-fuel marine main engine cylinder oil abnormal combustion |
