Cycle Resolved In-Cylinder Measurements and SOI Optimization of a DISI Engine in Transient Operation = 직접분사식 가솔린엔진의 과도운전 조건에서 분사시기 최적화

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The topic of this master’s thesis are cycle and crank angle resolved measurements in a 6 cylinder direct injection spark ignition gasoline engine. The engine is operated in transient mode. This thesis focuses on optical fiber spark plug and ion current measurements. Also pictures of a high speed camera were analyzed. Additionally cylinder pressure and temperatures as well as particulate matter, HC, NO, CO and CO2 emissions were measured. The intention of this research was to gather better knowledge of the combustion process during transient operation and its effects on exhaust emissions. Variations of start of injection, rail pressure, engine load and engine speed were conducted. In the end of this thesis possible use of the gained knowledge is demonstrated. The injection timing was optimized based on signals from the optical fiber spark plug. The goal was the reduction of particle emissions and a smooth combustion process.
Advisors
Bae, Choong Sikresearcher배충식researcher
Description
한국과학기술원 :기계공학과,
Publisher
한국과학기술원
Issue Date
2015
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학과, 2015.8,[80 :]

Keywords

Direct Ignition Spark Ignition (DISI); spray-guided DISI engine; transient operation; x; 직접분사식 점기점화 (DISI: Direct Ignition Spark Ignition); 분무 유도식 직접분사 엔진 (Spray-Guided DISI Engine); 과도운전 (transient operation)

URI
http://hdl.handle.net/10203/285185
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=927120&flag=dissertation
Appears in Collection
ME-Theses_Master(석사논문)
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