摘要
基于GT-Suite软件,针对某低速二冲程柴油机,采用DIPulse预测模型,建立整机模型并仿真高、低压EGR。结果表明,高、低压EGR均能有效地降低NO_X排放。当高压EGR率为42%,NO_X排放满足Tier Ⅲ标准;当低压EGR率为38%,NO_X排放满足Tier Ⅲ标准。当NO_X排放相同时,低压EGR的油耗更低。但由于重油杂质较多,压气机的可靠性会受到影响。
Based on GT-Suite software,the DIPulse prediction model is used for a low-speed two-stroke diesel engine to build a complete machine model and simulate high and low pressure EGR system.The results show that both high and low pressure EGR can effectively reduce NO_X emissions.When the high pressure EGR rate is 42%,the NO_X emission meets the TierⅢstandard;when the low pressure EGR rate is 38%,the NO_X emission meets the TierⅢstandard.When NO_X emissions are the same,the fuel consumption of low pressure EGR is lower.However,due to the heavy oil impurities,the reliability of the compressor will be affected.
作者
马天一
李澍冉
钱跃华
刘博
石磊
MA Tianyi;LI Shuran;QIAN Yuehua;LIU Bo;SHI Lei(Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai Jiao Tong University,Shanghai 200240,China;China Shipbuilding Power Engineering Institute Co.,Ltd.,Shanghai 201206,China)
出处
《船舶工程》
CSCD
北大核心
2019年第S1期188-191,共4页
Ship Engineering
