A Study on Effects of Recirculated Exhaust Gas upon $NO_x$ and Soot Emissions of a Marine Diesel Engine with Scrubber EGR System

박용 디젤기관의 $NO_x$ 및 매연 배출물에 미치는 스크러버형 EGR 시스템 재순환배기의 영향에 관한 연구

  • Published : 2000.05.01


The effects of recirculated exhaust gas on the characteristics of ;$NO_x$ and soot emissions under a wide range of engine load have been experimentally investigated by a water-cooled, four-cylinder, indirect injection, four cycle and marine diesel engine operating at two kinds of engine speeds. The purpose of the present study is to develop the EGR control system for reducing $NO_x$ and soot emissions simultaneously in diesel engines. The EGR system is used to reduce NOx emissions, and a novel diesel soot removal apparatus with a cylinder-type scrubber for the experiment system which has 6 water injectors(A water injector is made up 144 nozzles with 1.0mm in diameter) is specially designed and manufactured to reduce the soot contents in the recirculated exhaust gas to intake system of the engines. The intake oxygen concentration obtained by the intake air flow and the oxygen concentration in the recirculated exhaust gas, and the exhaust oxygen concentration measured in exhaust manifold are used to analyse and discuss the influences of EGR on NOx and soot emissions. The experiments are performed at the fixed fuel injection timing of $15.3^{\circ}$ BTDC regardless of experimental conditions. It is found that $NO_x$ emissions decrease and soot emissions increase owing to the drop of intake oxygen concentration and exhaust oxygen concentration as EGR rate rises. Also, one can conclude that it is sufficient for the scrubber EGR system with a novel diesel soot removal apparatus to reduce $NO_x$ emissions, but not to reduce soot emissions.


  1. The Forth International Symposium COMODIA 98 Reduction of Nitrogen Oxides of Diesel Engines by Exhaust-Gas-Selective Recirculation Fukuda, M.;Yamane, K.;Neichi, T. ikegami, M.
  2. The Effects of Simulated EGR via Intake Air Dilution on Combustions in an Optically Accessible DI Diesel Engine Michell, D.L.;Pinson, J.A.;Litzinger, T.A.
  3. Reducing Particulate and NOx Using Multiple In jections and EGR in a D.I. Diesel Pierpont, D.A.;Montgomery, D.T.;Reitz, R.D.
  4. 自動車技術 v.51 no.9 ディ-ゼルエソジソのEGR技術について 鹽崎忠一;土橋敬市
  5. 自動車技術 v.52 no.5 低公害 ディ-ゼルエソジソの燃燒コソセプト(續報:EGR, 含酸素燃料による燃燒改善) 橫田治之;中島 大;掛川俊明
  6. 韓國自動車工學會論文集 v.3 no.1 디젤機關의 燃料消費率 및 室素酸化物에 미치는 EGR의 影響에 관한 硏究 裵明渙;林載根
  7. 韓國自動車工學會論文集 v.6 no.6 디젤機關 煤煙 排出物에 미치는 再循環 排氣의 影響에 관한 硏究 裵明渙;林載根
  8. 韓國舶用機關學會誌 v.22 스크러버型 EGR시스템 디젤機關의 排氣 排出物 特性에 관한 硏究 裵明渙;河正鎬
  9. 韓國舶用機關學會誌 v.22 no.6 EGR시스템 디젤機關의 실린더 및 피스톤 磨耗에 미치는 再循環 排氣의 影響에 관한 硏究 裵明渙;河正鎬
  10. New Concept on Lower Exhaust Emission of Diesel Engine Fujimoto, H.;Senda, J.;Shibata, I.;Matsui, K.
  11. 燃燒の科學と技術 v.3 ディ-ゼルエソジソの燃燒課題 池土 詢
  12. The Role of Oxygen in Intake and Exhaust on NO Emission, Smoke and BMEP of a Diesel Engine with EGR System Tsunemoto, h.;Ishitani, H.
  13. Factors Affecting Smoke and Gaseous Emissions from Direct Injection Engines and a Method of Calculation Khan, I.M.;Greeves, G.;Wang, C.H.T.
  14. Light-Duty Diesel NOx-HC-Particulate Trade-off Studies Wade, W.R.
  15. International Symposium COMODIA 94 Effects of Supercharging and EGR on Diesel Combustion and Emissions Dasisho, Y.;Uchida, N.;Morita, K.;Saito, T.;and Shimogata, S.
  16. Effects of EGR on Heat Release in Diesel Combustion Ladommatos, N.;Abdelhalim, S.M.;Zhao, H.;Hu, Z.
  17. 韓國舶用機關學會 春李共同學術講演集 舶用 디젤 機關의 排氣 排出物에 미치는 스크러버型 排氣 再循環器의 影響 朴素仁;金兌權;裵明渙;崔在星
  18. Flame Temperature Correlation for the Effects of Exhaust Gas Recirculation on Diesel Particulate and NOx Emissions Plee, S.L.;Ahmad, T.;Myers, J.P.
  19. Combustion and Flame v.75 A Study on Formation in Premixed Constant-Volume Propane Combustion Kamimoto, T.;Bae, M.W.;Kobayashi, H.
  20. How to deal with Emission Control
  21. Zusammenhang Zwischen Russgehalt Anzeigewert und Bosch ETD 202.00/ETD 020.50 Gmbh, Robert Bosch
  22. Formation and Oxidation Process of Soot Particulates in a D.I. Diesel Engine - An Experimental Study via the Two-color Method Matsui, Y.;Kamimoto, T.;Matsuoka, S.