| 摘要:介绍了通过涡轮增压系统结合发动机机内技术来实现IMO III排放标准的技术及解决方案。在IMO II排放水平的基础上通过机内技术进一步降低NOx排放需要采用极强的米勒定时,因此需要较高的增压压力即两级涡轮增压,同时结合VCM(气阀控制系统)、紧凑型 SCR 系统或EGR等技术方法来实现IMO III。ABB的研究发现,两级涡轮增压系统具有同时降低油耗与NOx的潜能,并且具有运行灵活性等优势。 |
| 关键词: IMO III 两级涡轮增压,VCM 紧凑型SCR EGR |
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| Turbocharing System Technologies and Solutions for IMO Ⅲ |
| Christoph Rofka,Hu Bozong,Liu Qiuying,Wang Weicai |
| ABB Turbo Systems Co., Ltd.,SwitzerlandBaden 5401;ABB Jiangjin Turbo Systems Co., Ltd.Shanghai Branch,Shanghai201208 |
| Abstract:The technologies and solutions which combines turbocharging system and in-engine technologies to realize IMO III emissions regulations are introduced. Based on IMO II emissions level, strong Miller timing is necessary for further reduction of NOx emission with in-cylinder technology, therefore, higher charging pressure, which means two-stage turbocharging should be adopted, together with VCM, compact SCR system and EGR to realize IMO III. ABB research shows that two-stage turbocharging could reduce both fuel consumption and NOx emission and has the advantages of operational flexibility. |
| Key words: IMO III two-stage turbocharging VCM compact SCR EGR |
