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A study on the effect of valve timing on the combustion and emission characteristics for a 4-cylinder PCCI diesel engine
- Authors
- Han, Joonsup; Lee, Jaehyeon; Kim, Hyungmin; Lee, Kihyung
- Issue Date
- Aug-2010
- Publisher
- World Academy of Science Engineering and Technology
- Keywords
- Intake pressure; Atkinson cycle; PM emissions; Combustion engines; Intake valve closings; Ignition; CO emissions; Injection pressures; Calibration factors; Injection timing; Premixed charge compression ignition; Intake valves; Diesel engines; Emission sta
- Citation
- World Academy of Science, Engineering and Technology 2010, v.46, pp 861 - 867
- Pages
- 7
- Indexed
- SCOPUS
- Journal Title
- World Academy of Science, Engineering and Technology 2010
- Volume
- 46
- Start Page
- 861
- End Page
- 867
- ISSN
- 2010-376X
2010-3778
- Abstract
- PCCI engines can reduce NOx and PM emissions simultaneously without sacrificing thermal efficiency, but a low combustion temperature resulting from early fuel injection, and ignition occurring prior to TDC, can cause higher THC and CO emissions and fuel consumption. In conclusion, it was found that the PCCI combustion achieved by the 2-stage injection strategy with optimized calibration factors (e.g. EGR rate, injection pressure, swirl ratio, intake pressure, injection timing) can reduce NOx and PM emissions simultaneously. This research works are expected to provide valuable information conducive to a development of an innovative combustion engine that can fulfill upcoming stringent emission standards.
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Related Researcher
- LEE, KI HYUNG
- ERICA 공학대학 (DEPARTMENT OF MECHANICAL ENGINEERING)