Performance of Diesel-Compressed Natural Gas (CNG) Dual Fuel (DDF) Engine via CNG-Air Venturi Mixjector Application

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• 作者：A. Supee ; M. S. Shafeez ; R. Mohsin…
• 关键词：Diesel ; CNG dual fuel (DDF) system ; CNG ; air venturi mixjector ; Power output ; Exhaust gas concentrations
• 刊名：Arabian Journal for Science and Engineering
• 出版年：2014
• 出版时间：October 2014
• 年：2014
• 卷：39
• 期：10
• 页码：7335-7344
• 全文大小：1,670 KB
• 参考文献：1. Carlucci A.P., Risi A., Laforgia D., Naccarato F.: Experimental investigation and combustion analysis of a direct injection dual-fuel diesel–natural gas engine. Energy ass="a-plus-plus">33(2), 256-63 (2008) <a class="external" href="http://dx.doi.org/10.1016/j.energy.2007.06.005" target="_blank" title="It opens in new window">CrossRefa>
  2. Karim G.A.: Combustion in gas fueled compression: ignition engines of the dual fuel type. J. Eng. Gas Turbines Power ass="a-plus-plus">125(3), 827-36 (2003) <a class="external" href="http://dx.doi.org/10.1115/1.1581894" target="_blank" title="It opens in new window">CrossRefa>
  3. Lin, Z.; Su, W.: A Study on the Determination of the Amount of Pilot Injection and Rich and Lean Boundaries of the Pre-Mixed CNG/Air Mixture for a CNG/Diesel Dual-Fuel Engine. SAE Technical Paper 2003-01-0765 (2003)
  4. Barata, J.M.M.: Performance and Emissions of a Dual Fueled DI Diesel Engine. SAE Technical Paper, 952364 (1995)
  5. Karim G.A., Khan M.O.: Examination of effective rates of combustion heat release in a dual-fuel engine. J. Mech. Eng. Sci. ass="a-plus-plus">10(1), 13-3 (1968) <a class="external" href="http://dx.doi.org/10.1243/JMES_JOUR_1968_010_004_02" target="_blank" title="It opens in new window">CrossRefa>
  6. Agarwal, A.; Assanis, D.N.: Multi-Dimensional Modeling of Natural Gas Ignition Under Compression Ignition Conditions Using Detailed Chemistry. SAE Technical Paper 980136 (1998)
  7. Badr O., Karim G.A., Liu B.: An examination of the flame spread limits in a dual fuel engine. Appl. Therm. Eng. ass="a-plus-plus">19(10), 1071-080 (1999) <a class="external" href="http://dx.doi.org/10.1016/S1359-4311(98)00108-2" target="_blank" title="It opens in new window">CrossRefa>
  8. Pirouzpanah, V.; Kashani, B.O.: Prediction of Major Pollutants Emission in Direct—Injection Dual-Fuel Diesel and Natural—Gas Engines. SAE Technical Paper 1999-01-0841 (1999)
  9. Korakianitis T., Namasivayam A.M., Crookes R.J.: Natural-gas fueled spark-ignition (SI) and compression-ignition (CI) engine performance and emissions. Prog. Energy Combust. Sci. ass="a-plus-plus">37(1), 89-12 (2011) <a class="external" href="http://dx.doi.org/10.1016/j.pecs.2010.04.002" target="_blank" title="It opens in new window">CrossRefa>
  10. Sahoo B.B., Sahoo N., Saha U.K.: Effect of engine parameters and type of gaseous fuel on the performance of dual-fuel gas diesel engines—a critical review. Renew. Sustain. Energy Rev. ass="a-plus-plus">13(6-), 1151-184 (2009) <a class="external" href="http://dx.doi.org/10.1016/j.rser.2008.08.003" target="_blank" title="It opens in new window">CrossRefa>
  11. Hountalas, D.T.; Papagiannakis, R.G.: Development of a Simulation Model for Direct Injection Dual Fuel Diesel-Natural Gas Engines. SAE Technical Paper 2000-01-0286 (2000)
  12. Karim G.A.: A review of combustion processes in the dual fuel engine—the gas diesel engine. Prog. Energy Combust. Sci. ass="a-plus-plus">6(3), 277-85 (1980) <a class="external" href="http://dx.doi.org/10.1016/0360-1285(80)90019-2" target="_blank" title="It opens in new window">CrossRefa>
  13. Karim, G.A.; Liu, Z.: A Predictive Model for Knock in Dual Fuel Engines. SAE Technical Paper 921550 (1992)
  14. Hountalas, D.T.; Papagiannakis, R.G.: A Simulation Model for the Combustion Process of Natural Gas Engines with Pilot Diesel Fuel as an Ignition Source. SAE Technical Paper 2001-01-1245 (2001)
  15. Yusaf, T.; Yusoff, M.Z.: Development of a 3D CFD model to investigate the effect of the mixing quality on the CNG-diesel engine performance. In: The International Conference and Exhibition and Natural Gas Vehicles, Yokohama (2000)
  16. Papagiannakis R.G., Hountalas D.T.: Combustion and exhaust emission characteristics of a dual fuel compression ignition engine operated with pilot Diesel fuel and natural gas. Energy Convers Manag. ass="a-plus-plus">45(18-9), 2971-987 (2004) <a class="external" href="http://dx.doi.org/10.1016/j.enconman.2004.01.013" target="_blank" title="It opens in new window">CrossRefa>
  17. Papagiannakis R.G., Hountalas D.T.: Experimental investigation concerning the effect of natural gas percentage on performance and emissions of a DI dual fuel diesel engine. Appl. Therm. Eng. ass="a-plus-plus">23((3), 353-65 (2003) <a class="external" href="http://dx.doi.org/10.1016/S1359-4311(02)00187-4" target="_blank" title="It opens in new window">CrossRefa>
  18. Berhad, G.M.: Chemical Safety Data Sheet (Natural Gas). 2011 October [cited 2013 September, 25]; Revision 4: <a href="http://www.gasmalaysia.com/about_gas/chemical_safety_data_sheet.php" class="a-plus-plus">http://www.gasmalaysia.com/about_gas/chemical_safety_data_sheet.phpa>
  19. Petronas.: Diesel (Euro 2M). 2011 March [cited 2013 September, 25]. <a href="http://www.mymesra.com.my/images/microsite/commercial/pdf/diesel_euro_2M.pdf" class="a-plus-plus">http://www.mymesra.com.my/images/microsite/commercial/pdf/diesel_euro_2M.pdfa>
  20. Namasivayam A.M., Crookes R.J., Korakianitis T., Olsen J.: Assessment of combustion in natural gas dual-fuelled compression ignition engines with dimethyl ether and rapeseed methyl ester pilot ignition. Int. J. Engine Res. ass="a-plus-plus">10(3), 165-74 (2009) <a class="external" href="http://dx.doi.org/10.1243/14680874JER02909" target="_blank" title="It opens in new window">CrossRefa>
  21. Selim M.Y.E.: Sensitivity of dual fuel engine combustion and knocking limits to gaseous fuel composition. Energy Convers. Manag. ass="a-plus-plus">45(3), 411-25 (2004) <a class="external" href="http://dx.doi.org/10.1016/S0196-8904(03)00150-X" target="_blank" title="It opens in new window">CrossRefa>
  22. Kusaka J., Okamoto T., Daisho Y., Kihara R., Saito T.: Combustion and exhaust gas emission characteristics of a diesel engine dual- fueled with natural gas. JSAE Rev. ass="a-plus-plus">21(4), 489-96 (2000) <a class="external" href="http://dx.doi.org/10.1016/S0389-4304(00)00071-0" target="_blank" title="It opens in new window">CrossRefa>
  23. Papagiannakis R.G., Kotsiopoulos P.N., Zannis T.C., Yfantis E.A., Hountalas D.T., Rakopoulos C.D.: Theoretical study of the effects of engine parameters on performance and emissions of a pilot ignited natural gas diesel engine. Energy ass="a-plus-plus">35(2), 1129-138 (2010) <a class="external" href="http://dx.doi.org/10.1016/j.energy.2009.06.006" target="_blank" title="It opens in new window">CrossRefa>
  24. Kouremenos D.A., Rakopoulos C.D., Hountalas D.T.: Experimental investigation of the performance and exhaust emissions of a swirl chamber diesel engine using JP-8 aviation fuel. Int. J. Energy Res. ass="a-plus-plus">21(12), 1173-185 (1997) <a class="external" href="http://dx.doi.org/10.1002/(SICI)1099-114X(19971010)21:12<1173::AID-ER312>3.0.CO;2-#" target="_blank" title="It opens in new window">CrossRefa>
  25. Heywood J.B.: Internal Combustion Engine Fundamentals. McGraw-Hill, New York (1988)
  26. Papagiannakis R.G., Rakopoulos C.D., Hountalas D.T., Rakopoulos D.C.: Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions. Fuel ass="a-plus-plus">89(7), 1397-406 (2010) <a class="external" href="http://dx.doi.org/10.1016/j.fuel.2009.11.001" target="_blank" title="It opens in new window">CrossRefa>
  27. Lavoie G.A., Heywood J.B., Keck J.C.: Experimental and theoretical study of nitric oxide formation in internal combustion engines. Combust. Sci. Technol. ass="a-plus-plus">1(4), 313-26 (1970) <a class="external" href="http://dx.doi.org/10.1080/00102206908952211" target="_blank" title="It opens in new window">CrossRefa>
  
• 作者单位：A. Supee (1)
  M. S. Shafeez (1)
  R. Mohsin (2)
  Z. A. Majid (2)
  
  1. Faculty of Petroleum and Renewable Energy Engineering (FPREE), Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
  2. UTM-MPRC Institute for Oil and Gas (formerly known as Gas Technology Centre), Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
  

文摘

The performance of the diesel engines can be improved by integrating the existing diesel fuel system with another type of fuel which is compressed natural gas (CNG) and this system is called as diesel-CNG dual fuel (DDF). In DDF system, the performance of the engines are greatly influenced by mixing quality of CNG and air before combustion chamber. There are many possible designs of CNG and air mixer available in the market; however, there are limited design using a combination of CNG injector and air mixer which is named as CNG-air venturi mixjector. Hence, this research is conducted to design new type of CNG-air venturi mixjector and to determine the effects of injector numbers in mixjector toward diesel engine performance. CNG-air venturi mixjector was installed at the entrance of the intake manifold, and only three different numbers of injectors were tested. The engine performance tests under full load condition were conducted over the engine speed range from 1,000 to 3,000?rpm for power output and for exhaust gas concentrations, the range was set from 1,000 to 2,800?rpm. Exhaust gas concentrations under various loading conditions were analyzed from light to heavy loading using rated power speed that can produce higher power output. The concentrations tested under both conditions included nitric oxides (NOx), carbon dioxide (CO2) and carbon monoxide (CO) concentrations. Meanwhile, unburned hydrocarbons concentration tests were only conducted at full load condition. DDF system with four injectors in CNG-air venturi mixjector shows higher power output at rated power speed of 2,800?rpm and less exhaust gas concentrations under maximum loading condition (100% load) compared to the conventional diesel engine, DDF system without CNG-air venturi mixjector and DDF system with two and six injectors in CNG-air venturi mixjector. CFD simulator was used to study the possible mechanism for an optimum numbers of injectors that resulted in better engine performance focused in flow behavior of CNG and air in the CNG-air venturi mixjector connected to the intake manifold. CNG-air venturi mixjector with four injectors results in homogeneous mixture and thus lead to the high combustion efficiency. Based on the findings, the new design of CNG-air venturi mixjector can be very valuable if opted to apply this technology on existing diesel engine.