서지주요정보
가스연료엔진의 여러 가지 운전 조건하에서의 유해 배기물 측정을 통한 오존발생특성에 관한 연구 = The characterization of ozone formation under various operating conditions utilizing the measurement of exhaust gas emissions from gaseous fueled engine
서명 / 저자 가스연료엔진의 여러 가지 운전 조건하에서의 유해 배기물 측정을 통한 오존발생특성에 관한 연구 = The characterization of ozone formation under various operating conditions utilizing the measurement of exhaust gas emissions from gaseous fueled engine / 김창업.
저자명 김창업 ; Kim, Chang-Up
발행사항 [대전 : 한국과학기술원, 2000].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8011430

소장위치/청구기호

학술문화관(문화관) 보존서고

DME 00036

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Need for the studies on ozone formation has been raised because the ozone formation, which is harmful to the environment by forming the photochemical smong, has been highly increased. Ozone is one of the photochemical oxidants made by the reaction of HC and NOx emissions under sunlight. Recently, many researches on the non-regulated emissions including ozone have been carried out widely as well as regulated emissions (HC, NOx, CO, PM) from the internal combustion engines. To analyze the characteristics of ozone formation, individual concentrations of HC emission were measured under various engine design and operating conditions, using the natural gal and LPG fuel in a 2-liter 4-cylinder engine. The main fuel species of natural gas was methane while one of LPG was propane. The emission were characterized as a function of compression ratio(8.6 and 10.6) and intake swirl intensity as the engine design parameters, excess air ratio(λ=1.00~1.6), bemp(250~800kPa), ignition timing(BYDC 1-~55) and EGR ratio(0~7%) as the operating parameters. Fuel conversion efficiencies and cycle to cycle variation were also investigated together with emissions to study the of engine on the combustion performance in gas engines especially under the lean burn conditions. In addition, relationships between HC, NOx emissions and ozone formation were investigated under these various conditions. Hc emissions from LPG engine consisted primarily of propane (greater than 60%), ethylene and propylene, while those from natural gas engine were methane (greater than 60%), ethane, ethylene and propane. Higher compression ratio, leaner mixture condition and advanced ignition timing resulted in the increase of the ozone formation by the increase of NMHC emissions, though it decreased the SR values by higher fuel components. The change of swirl intensity leads to no serious effects on ozone formation. BSRs showed almost same values under high bmep, over 500kPa for both fuels. This means that the increase of NMHC emissions and the decrease of SRs with higher bmep affect each other simultaneously. The induction of EGR showed the increase of ozone formation by the rise of NMHC emissions and SRs though the amount of variation was very small. Natural gas was shown to have less effect on the ozone formation than LPG. This was accomplished by reducing the emissions of propylene ($C_3H_6$), which has relatively high MIR factor, and propane ($C_3H_8$) that has large portion of LPG. In addition, natural gas shows a benefit in the other emission (i.e. NMHC, NOx and $CO_2$), SR and BSR values except fuel conversion efficiency. It was also found that $CO_2$ emission decreased with smaller C value of fuel, leaner mixture strength, higher compression ratio, higher bmep and the ignition near the MBT spark timing. And the ozone formation was most affected by the variation of excess air ratio, among engine operating and design parameters.

서지기타정보

서지기타정보
청구기호 {DME 00036
형태사항 xvi, 163 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 : A, 배기가스 분석시스템. - B, 실제 배기가스 분석. - C, 배기가스의 유해성. - D, 부록 참고문헌
저자명의 영문표기 : Chang-Up Kim
지도교수의 한글표기 : 배충식
지도교수의 영문표기 : Choong-Sik Bae
수록잡지명 : "Speciated hydrocarbon emissions from a gas fueled spark ignition engine with various operating parameters". Proceedings of the institution of mechanical engineering, imeche, part D, , ()
학위논문 학위논문(박사) - 한국과학기술원 : 기계공학전공,
서지주기 참고문헌 : p. 98-103
QR CODE qr code