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EFFECTS OF EARLY-INJECTION STRATEGY ON THE COMBUSTION AND EMISSION CHARACTERISTICS OF A PCCI DIESEL ENGINE

Title
EFFECTS OF EARLY-INJECTION STRATEGY ON THE COMBUSTION AND EMISSION CHARACTERISTICS OF A PCCI DIESEL ENGINE
Author
이기형
Keywords
premixed charge compression ignition (PCCI); pilot injection; early injection; common-rail diesel engine; injection strategy; combustion noise level (CNL)
Issue Date
2017-01
Publisher
Begell House Inc.
Citation
Atomization and Sprays, v. 27, No. 1, Page. 45-59
Abstract
Premixed charge compression ignition (PCCI) combustion has been studied for its homogeneous mixture formation and low combustion temperature with the aim of reducing both NOx and PM levels. This type of combustion also increases thermal efficiency due to an optimal air-fuel mixture. It is well known, however, that PCCI combustion reduces fuel economy because combustion tends to start before top dead center (TDC). Therefore, it is necessary to determine the optimal operating conditions for PCCI combustion in order to reduce NOx and PM and increase thermal efficiency. In this study, PCCI combustion was realized by adding an early-injection strategy to a conventional diesel engine system. The characteristics of PCCI combustion were analyzed via comparison to the injection strategy used in conventional diesel combustion. The results show that NOx and PM per unit of output power in PCCI combustion were reduced compared to conventional diesel combustion.
URI
https://repository.hanyang.ac.kr/handle/20.500.11754/128462http://www.dl.begellhouse.com/journals/6a7c7e10642258cc,63b9f01551f78c9e,0bd5b16c1c9163e4.html
ISSN
1044-5110
DOI
10.1615/AtomizSpr.2016016267
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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