| 研究生: |
何柏賢 He, Bo-Xian |
|---|---|
| 論文名稱: |
不同進氣溫度和廢氣再循環率下柴油引擎於進氣處添加異丙醇之性能與排汙研究 Study of Performance and Emissions of Diesel Engines Adding Isopropanol at Inlet Port with Varying Intake Air Temperature and EGR Ratio |
| 指導教授: |
吳鴻文
Wu, Horng-Wen |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 系統及船舶機電工程學系 Department of Systems and Naval Mechatronic Engineering |
| 論文出版年: | 2018 |
| 畢業學年度: | 106 |
| 語文別: | 英文 |
| 論文頁數: | 116 |
| 中文關鍵詞: | 柴油引擎 、異丙醇 、進氣處 、預加熱 、廢氣再循環 、燃燒狀態 |
| 外文關鍵詞: | Diesel engine, Isopropanol, Inlet, Pre-heating, EGR, Combustion status |
| 相關次數: | 點閱:56 下載:0 |
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柴油引擎及化石燃料的結合已經是陸上及海上運輸工具動力的主要來源,在大量使用化石燃料的情況下,引發了環境汙染以及能源耗竭的雙重危機,所以研究學者已一直著手研究替代性燃料的可用性以及降低燃燒石化燃料所產生的汙染。期望能同時兼顧能源需求、環境維護。
異丙醇不僅屬於富氧燃料,同時具有較高的蒸發潛熱以及較低的熱值, 這些性質雖然能降低Smoke和NOX的排放,但是卻會增加HC以及CO的排放。本研究使用單缸直噴式柴油引擎進氣處加熱,導入異丙醇抑制CO 與HC,並使用廢氣再循環(EGR)來減緩NOX的上升。引擎於不同轉速與負荷下運轉,由資料擷取系統量測氣缸內燃氣壓力,進行熱釋放率分析並探討燃燒狀況。接著調整進氣加熱溫度、EGR 流量、異丙醇混合比等參數進行實驗,比較柴油引擎導入異丙醇於設置進氣端加熱和導入EGR 前後對於引擎性能與污染排放之關係。本研究的模擬程式主體為KIVA 3V-RELEASE2,藉由修改程式進氣組成進行數值運算分析,探討進氣端添加異丙醇對柴油引擎性能的影響,並比較數值模擬與實驗的結果。
本研究結果顯示在進氣處噴射異丙醇以及導入EGR可以有效地降低NOX、Smoke和PM2.5。相反地,HC和CO卻有上升的趨勢,為了解決此上升的趨勢,作者利用加熱進氣端的方法來抑制HC和CO的濃度,實驗結果也證明確實能有效地抑制這兩種汙染物的排放濃度;模擬結果顯示,進氣處添加異丙醇會降低缸內燃燒溫度、延長點火延遲以及提高缸內燃氣壓力,並且也能夠改善缸內的燃燒狀況,使混合氣的分佈在氣缸內更加地均勻,汙染物排放方面則可以降低NOX、Smoke。將實驗結果與模擬結果相比之後,可以觀察到兩者的趨勢是一致的,也因此也增加了本研究可信度。
The combination of diesel engines and fossil fuels have been a major source of power for land-based and marine transport vehicles. In the case of heavy use of fossil fuels, a double crisis of environmental pollution and energy consumption is triggered. Therefore, researchers have been studying the availability of alternative fuels and reducing the pollution from burning fossil fuels. It is expected to consider both energy demand, environmental maintenance.
Isopropanol (IPA) not only belongs to oxygen-enriched fuel, but also has higher latent heat and lower heating value. Although its properties can reduce Smoke and NOX emissions, these can also cause HC and CO emissions to rise. Therefore, this thesis used inlet pre-heating and injecting isopropanol (IPA) to inhibit CO and HC on a single cylinder DI diesel engine. Simultaneously, using EGR mitigated NOX growth. This study carried out under different engine speeds and loads, and the data acquisition system was used to measure the gas pressure in the cylinder, and the heat release rate was analyzed and the combustion status was discussed. Then, the parameters were tested, such as pre-heating temperature, EGR flow rate and IPA mass fraction. The relationship between the engine performance and the pollution emission of diesel engine was compared by introduction of isopropanol, setting the inlet pre-heating and importing EGR into the diesel engine. The simulation program of this thesis was used KIVA 3V-RELEASE2 as the main body. It was calculated by modifying the program intake gas composition, and the effect of adding isopropanol on the combustion characteristics and emissions of a diesel engine at the inlet port was investigated, and the results of numerical simulation and experiment were compared.
The experimental results of this thesis showed that the injection of isopropanol and the introduction of EGR at the inlet can effectively reduce NOX, Smoke and PM2.5. On the contrary, HC and CO have an upward trend. In order to solve this rising trend, the author used the method of pre-heating at the inlet to suppress the concentration of HC and CO, and the experimental results also proved that the emission concentration of these two pollutants can be effectively suppressed; Simulation results showed that the addition of isopropanol at the inlet results in lower in-cylinder combustion temperature, longer ignition delay and higher in-cylinder gas pressure. It can also improve the combustion conditions in the cylinder and make the distribution of the gas mixture even more uniform in the cylinder. In terms of pollutant emissions, it can reduce NOX and Smoke. After comparing the experimental results with the simulation results, it can be observed that the trends of the both results are consistent. Therefore, it also increases the experimental credibility for this thesis.
1. J.B. Heywood, Internal combustion engine fundamentals, New York, U.S.A: McGraw-Hill Book Company, 1988.
2. Y.F. Zhang, Q.G. Luo, F.S. Liu, “Research Status and Development Prospect of Hydrogen Engine”, Vol. 36, No.1, 2007.
3. C.H. Lin, “An applicable Study on Isopropyl Alcohol Mixed Fuel in Spark Ignition Engine”, Master's Degree, Department of Vehicle Engineering, National Taipei University of Science and Technology, 2012.
4. Y.B. Liu, B. Xu, J.H. Jia, J.A. Wu, W.W. Shang, Z.H. Ma, “Effect of injection timing on performance and emissions of DI-diesel engine fueled with isopropanol”, International Conference on Electrical, Electronics and Mechatronics, ICEEM, 2015.
5. T.V. Babu, B.V. AppaRao, A. Kolakoti, “Engine combustion analysis of an IDI-diesel engine with Rice Bran Methyl Ester and Isopropanol Injection at suction end”, J. Multidisciplinary Engineering Science and Technology, Vol. 1, pp. 254-261, 2014.
6. J. Gong, Y.J. Zhang, C.L. Tang, Z.H. Huang, “Emission characteristics of isopropanol/gasoline blends in a spark-ignition engine combined with exhaust gas re-circulation”, Thermal Science, Vol. 18, pp. 269-277, 2014.
7. X.C. Lu, X.X. Zhou, L.B. Ji, Z. Yang, D. Han, C. Huang, Z. Huang, “Experimental studies on the dual-fuel sequential combustion and emission simulation”, Energy, Vol. 51, pp. 358-373, 2013.
8. A. Uyumaz, “An experimental investigation into combustion and performance characteristics of an HCCI gasoline engine fueled with n-heptane, isopropanol and n-butanol fuel blends at different inlet air temperatures”, Energy Conversion and Management, Vol. 98, pp. 199-207, 2015.
9. S.J. Lan, “The Study on Diesel Engine Performance with Characteristic of Isopropanol Fuel Mixed with Super Diesel Fuel in Direct Injection Diesel Engine”, Master's Degree, Department of Vehicle Engineering, National Taipei University of Science and Technology, 2012.
10. M.T. Luo, “A Study of the effect of isopropanol additive on the performance and exhaust emissions for a diesel engine, Master's Degree, Department of Mechanical and Civil Engineering”, National Taiwan University of Oceanic University, 2005
11. L. Xingcai, H. Yuchun, J. Libin, Z. Linlin, H. Zhen, “Heat Release Analysis on Combustion and Parametric Study on Emissions of HCCI Engines Fueled with 2-Propanol/n-Heptane Blend Fuels”, Energy & Fuels, 20, pp. 1870-1878, 2006.
12. D.S. Kim, M.Y. Kim, C.S. Lee, “Effect of Premixed Gasoline Fuel on the Combustion Characteristics of Compression Ignition Engine”, Energy & Fuels, 18, pp. 1213-1219, 2004.
13. J. Liu, A. Yao, C. Yao, “Effects of diesel injection pressure on the performance and emissions of a HD common-rail diesel engine fueled with diesel/methanol dual fuel”, Fuel, Vol. 140, pp. 192-200, 2015
14. A. Paykani, R.Khoshbakhti Saray, A.M. Kousha, M.T. Shervani-Tabar, “Effect of exhaust gas recirculation and intake pre-heating on performance and emission characteristics of dual fuel engines at part loads”, Journal of Central South University, Issue 5, Vol. 19, pp. 1346-1352, 2012
15. R.G. Papagiannakis, “Study of air inlet preheating and EGR impacts for improving the operation of compression ignition engine running under dual fuel mode”, Energy Conversion and Management, Vol. 68, pp. 40-53, 2013.
16. N. Yilmaz, “Effects of intake air preheat and fuel blend ratio on a diesel engine operating on biodiesel–methanol blends”, Fuel, Vol. 94, pp. 444-447, 2012.
17. D.S. Kim, M.Y. Kim, C.S Lee, “Reduction of Nitric Oxides and Soot by Premixed Fuel in Partial HCCI Engine”, the American Society of Mechanical Engineers, Gas Turbines Power, Vol. 128(3), pp. 497-505, 2005.
18. Q. Wang, C. Yao, Z, Dou, B. Wang, T. Wu, “Effect of intake pre-heating and injection timing on combustion and emission characteristics of a methanol fumigated diesel engine at part load”, Fuel, Vol. 159, pp. 796-802, 2015.
19. W. Pan, C. Yao, G. Han, H. Wei, Q. Wang, “The impact of intake air temperature on performance and exhaust emissions of a diesel methanol dual fuel engine”, Fuel, Vol. 162, pp. 101-110, 2015.
20. United States Environmental Protection Agency, U.S. EPA, http://www.epa.gov/pm/.
21. https://www.dieselnet.com/tech/dpm_size.php
22. F.E Obert, Internal Combustion Engines and Air Pollution, Index Education Publishers, New York, Chap 2, 1973.
23. F. Cruz-Peragón, F.J. Jiménez-Espadafor, J.A. Palomar, M.P. Dorado, “Influence of a combustion parametric model on the cyclic angular speed of internal combustion engines. Part I: setup for sensitivity analysis”, Energy & Fuels, Vol. 23, pp. 2921-2929, 2009.
24. A.T. Kirkpatrick, C.R. Ferguson, Internal Combustion Engine Fundamentals: Applied Thermoscience, John Wiley & Sons, Inc., New York, pp. 39-54, 2001.
25. D. Anderton, P.E. Waters, “Effect of Fuel Composition on Diesel Engine Noise and Performance”, SAE Technical Paper 820235, 1982.
26. S. Henningsen, “Hydrocarbon Emissions from the Ignition-Delay Period in a Direct-Ignition Diesel Engine”, SAE Technical Paper 841381, 1984.
27. A. A. Amsden, “KIVA-3V, Release 2, Improvments to KIVA-3V,” Los Alamos National Laboratory report LA-13608-MS, 1999.
28. C. Liu, “An Experimental and Analytical Investigation into the Combustion Characteristics of HCCI and Dual Fuel Engines with Pilot Injection”, Ph.D. diss., Dept. of Mechanical and Manufacturing Engineering, Calgary Univ, 2006.
29. P.C. Pei, Y.F. Liu, “Asymptotic Analysis on Autoignition and Explosion Limits of Hydrogen-Oxygen Mixtures in Homogeneous Systems”, International Journal of Hydrogen Energy, Vol. 31, pp. 639-647, 2006.
30. K. Seshadri, N. Peters, G. Paczko, “Rate-ratio asymptotic analysis of autoignition of n-heptane in laminar non-premixed flows”, Comb. & Flame, Vol. 146, pp. 131-141, 2006.
31. S. Liu, J.C. Hewson, J.H. Chen, “Nonpremixed n-heptane autoignition in unsteady counterflow”, Combustion and Flame, Vol. 145, pp. 730-739, 2006.
32. Holman J.B., Experimental Methods for Engineers, McGraw Hill Publications, New York, 2003.
33. JHT Editorial Board of ASME J. Heat Transfer, Journal of Heat Transfer Policy on Reporting Uncertainties in Experimental Measurements and Results, ASME J. Heat Transfer, 1993;115: 5-6.
34. Environmental Analysis Laboratory EPA, ROC. EPA, http://www.niea.gov.tw /.
校內:2023-09-30公開