서지주요정보
다단 분사와 EGR 을 적용한 HSDI 디젤 엔진의 성능에 관한 실험적 연구 = An experimental study of multiple injection strategy and EGR in a HSDI diesel engine
서명 / 저자 다단 분사와 EGR 을 적용한 HSDI 디젤 엔진의 성능에 관한 실험적 연구 = An experimental study of multiple injection strategy and EGR in a HSDI diesel engine / 박철웅.
저자명 박철웅 ; Park, Cheol-Woong
발행사항 [대전 : 한국과학기술원, 2004].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8014932

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 04034

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Common rail injection system has a great flexibility in injection timing, pressure and multiple-injection. The main objective of this study is to investigate the effect of pilot, after and multiple fuel injection strategies on engine performance and emissions. The study was carried out on a single cylinder optical direct injection diesel engine equipped with a high pressure common rail fuel injection system. Spray and combustion evolutions were visualized through a high speed charge-coupled device (CCD) camera. Tests were performed at fixed engine speed with various injection and flow parameters. Engine performance, emissions and cylinder pressure were obtained and analyzed to investigate the effect of fuel injection and engine operations. It was found that pilot-injection reduced the ignition delay of main injection, then contributed to the improvement of indicated mean effective pressure (IMEP) by controlling the premixed combustion. The after-injection was found to be very effective in completing the oxidation process and reducing the particulate emissions even when small fuel quantities were injected. It was also found that multiple injection could reduce particulate emissions by more than 40% in some cases. It was believed that a reduction of particulates using after- or multiple-injections resulted from improved particulate oxidation in the later combustion cycle due to increased in-cylinder bulk temperature and enhanced fuel-air mixing during an additional combustion event.

서지기타정보

서지기타정보
청구기호 {MME 04034
형태사항 viii, 78 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Cheol-Woong Park
지도교수의 한글표기 : 배충식
지도교수의 영문표기 : Choong-Sik Bae
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학전공,
서지주기 참고문헌 : p. 75-78
주제 고속 직접분사식 디젤 엔진
커먼레일
다단 분사
배기 가스 재순환
HSDI Diesel Engine
Common-rail
Multiple Injection
EGR
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