압축착화 엔진에서 분사압이 저온연소에 미치는 영향Effect of Injection Pressure on Low Temperature Combustion in CI Engines
- Other Titles
- Effect of Injection Pressure on Low Temperature Combustion in CI Engines
- Authors
- 장재훈; 이선엽; 이용규; 오승묵; 이기형
- Issue Date
- Mar-2013
- Publisher
- 한국액체미립화학회
- Keywords
- Low Temperature Combustion; Injection Pressure; EGR; Nitrogen Oxides; Particulate Matters; Modulated Kinetics; 저온연소; 분사압; 배기재순환; 질소산화물; 입자상물질; 저온예혼합연소
- Citation
- 한국액체미립화 학회지, v.18, no.1, pp.21 - 26
- Indexed
- KCI
- Journal Title
- 한국액체미립화 학회지
- Volume
- 18
- Number
- 1
- Start Page
- 21
- End Page
- 26
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/30154
- ISSN
- 1226-2277
- Abstract
- Diesel low temperature combustion (LTC) is the concept where fuel is burned at a low temperature oxidation regime so that NOx and particulate matters (PM) can simultaneously be reduced. There are two ways to realize low temperature combustion in compression ignition engines. One is to supply a large amount of EGR gas combined with advanced fuel injection timing. The other is to use a moderate level of EGR with fuel injection at near TDC which is generally called Modulated kinetics (MK) method. In this study, the effects of fuel injection pressure on performance and emissions of a single cylinder engine were evaluated using the latter approach. The engine test results show that MK operations were successfully achieved over a range of with 950 to 1050 bar in injection pressure with 16% O2 concentration, and NOx and PM were significantly suppressed at the same time. In addition, with an increase in fuel injection pressure, the levels of smoke, THC and CO were decreased while NOx emissions were increased. Moreover, as fuel injection timing retarded to TDC, more THC and CO emissions were generated, but smoke and NOx were decreased.
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