进气成分和压力组合优化船用二冲程柴油机排放
|
摘要
以B&W 6S35ME-B9型船用二冲程柴油机为研究对象,在GT-Power中搭建一维仿真计算模型,研究扫气压力和进气成分的组合优化对柴油机燃烧、排放和对外做功等性能的影响.结果表明:相对正常空气进气工况,通过高压贫氧进气在保证缸内的O_2量基本不变,不影响其对外输出功率情况下,能够有效降低柴油机NO_x排放;0.338 3 MPa、18%O_2&82%N2进气工况下NO_x排放仅3.29g/(kW·h),能够达到船舶三阶段排放要求,而对外输出功率还略有增加;CO_2对柴油机做功和NO_x排放影响最为明显,水蒸汽次之,而N2对功率输出影响小、对NO_x排放影响较大;高压富氮贫氧更有利于优化柴油机性能.
Building a one-dimensional simulation model,which regarded a type of B&W 6 S35 ME-B9 marine two-stroke diesel engines as research subject,the characteristics of combustion,emissions,power output of diesel engine affected by scavenge pressure and intake components are studied.The results show that the high pressure and oxygen-depleted intake ensure the amount of O_2 in cylinder,without affecting its output power,and decrease its NO_x emission.Under the condition of 0.338 3 MPa,18%O_2 and 82% N2 intake,NO_x emissions of engine are only 3.29 g/(kW·h)that can meet the third stage of ship emissions requirements;while its output power shows a slight increase.The influence of CO_2 on the power output and NO_x emission of diesel engine is the most obvious,followed by water vapor.However,N2 makes a great impact on NO_x emission and smaller for output power.Therefore,the high pressure and oxygen-depleted(nitrogen-enriched)intake is more conducive to optimize diesel engines' performance.
Building a one-dimensional simulation model,which regarded a type of B&W 6 S35 ME-B9 marine two-stroke diesel engines as research subject,the characteristics of combustion,emissions,power output of diesel engine affected by scavenge pressure and intake components are studied.The results show that the high pressure and oxygen-depleted intake ensure the amount of O_2 in cylinder,without affecting its output power,and decrease its NO_x emission.Under the condition of 0.338 3 MPa,18%O_2 and 82% N2 intake,NO_x emissions of engine are only 3.29 g/(kW·h)that can meet the third stage of ship emissions requirements;while its output power shows a slight increase.The influence of CO_2 on the power output and NO_x emission of diesel engine is the most obvious,followed by water vapor.However,N2 makes a great impact on NO_x emission and smaller for output power.Therefore,the high pressure and oxygen-depleted(nitrogen-enriched)intake is more conducive to optimize diesel engines' performance.
引文
[1]海事服务中心.主推进动力装置[M].大连:大连海事大学出版社,2012:50-100.
[2]Park Hyoung Keun,Ghal Sang Hak,Park Hyun Chun.A study on NOx reduction of marine 4-stroke diesel engine using charge air humidification[J].SAE International,2011,24:172.
[3]Yang Z L,Zhang D,Caglayan O,et al.Selection of techniques for reducing shipping NOx and SOx emissions[J].Transportation Research Part D,2012,17(6):478-486.
[4]Psaraftis H N.Market-based measures for greenhouse gas emissions from ships:a review[J].WMU Journal of Maritime Affairs,2012,11(2):211-232.
[5]谭亲明,胡以怀,张旭升.现代船舶柴油机节能减排技术[J].环境工程,2015,33(205):76-80.Tan Qinming,Hu Yihuai,Zhang Xusheng.Modern energy conservation and emission reduction technology research of marine diesel engine[J].Environmental Engineering,2015,33(205):76-80.
[6]张全长.柴油机低温燃烧基础理论和燃烧控制策略的试验研究[D].天津:天津大学,2010.Zhang Quanchang.Experimental study on combustion fundamental theory and control strategy of diesel lowtemperature combustion[D].Tianjin:Tianjin University,2010.
[7]马小康,张付军,韩恺,等.进气氧浓度对柴油机燃烧过程影响的仿真研究[J].兵工学报,2014,35(7):945-952.Ma Xiaokang,Zhang Fujun,Han Kai,et al.Simulation study into effect of intake air oxygen concentration on combustion process in diesel engine[J].Acta Armamentarh,2014,35(7):945-952.
[8]刘贝,程晓北,董世军,等.柴油机部分预混合燃烧与排放特性的模拟与试验[J].内燃机学报,2014,32(6):496-504.Liu Bei,Cheng Xiaobei,Dong Shijun,et al.Simulation and experiment on PPC combutsion and emissions characteristics of diesel engine[J].Transactions of CSICE,2014,32(6):496-504.
[9]Amin M A,Zhar A A,Farid M.An experimental study on the influence of EGR rate and fuel octane number on the combustion characteristics of a CAI two-stroke cycle engine[J].Applied Thermal Engineering,2014,71(1):248-258.
[10]姚春德,刘增勇,何邦全,等.进气氮气含量对柴油机混合气形成与燃烧过程的影响[J].燃烧科学与技术,2002,8(3):233-237.Yao Chunde,Liu Zengyong,He Bangquan,et al.Influence of intake air mixed with N2 on combustion process in a diesel engine[J].Journal of Combustion Science and Technology,2002,8(3):233-237.
[11]韩锐,李宏刚,杨荣海,等.进气加湿对柴油机燃用不同牌号柴油NOx排放性能的影响[J].大连交通大学学报,2013,34(4):32-34.Han Rui,Li Honggang,Yang Ronghai,et al.Influence of water induction on NOx emission of diesel engine through air intake[J].Journal of Dalian Jiaotong University,2013,34(4):32-34.
[12]张伟,舒歌群,沈颖刚,等.EGR与进气富氧对直喷柴油机NO和碳烟排放的影响[J].内燃机学报,2012,30(1):16-21.Zhang Wei,Shu Gequn,Shen Yingang,et al.Influence of EGR and oxygen-enriched air on DI engine NOsmoke emission[J].Transactions of CSICE,2012,30(1):16-21.
[13]刘博,邓康耀,张哲,等.可调二级增压柴油机增压压力控制策略计算研究[J].内燃机工程,2011,32(4):17-22.Liu Bo,Deng Kangyao,Zhang Zhe,et al.Computational study on boost pressure control strategy for regulated two stage turbocharged diesel engine[J].Chinese Internal Combustion Engine Engineering,2011,32(4):17-22.
[14]申立中,王俊,刘少华,等.满足未来排放法规的车用增压技术[J].昆明理工大学学报,2014,39(6):63-73.Shen Lizhong,Wang Jun,Liu Shaohua,et al.Review of vehicle boosting technologies for future emissions regulations[J].Journal of Kunming University of Science and Technology,2014,39(6):63-73.
[15]黄开胜,张尧,刘刚,等.进气压力对发动机性能的影响研究[J].内燃机工程,2017,38(2):73-78.Huang Kaisheng,Zhang Yao,Liu Gang,et al.Research on influence of inlet pressure on diesel engine performance[J].Chinese Internal Combustion Engine Engineering,2017,38(2):73-78.
[2]Park Hyoung Keun,Ghal Sang Hak,Park Hyun Chun.A study on NOx reduction of marine 4-stroke diesel engine using charge air humidification[J].SAE International,2011,24:172.
[3]Yang Z L,Zhang D,Caglayan O,et al.Selection of techniques for reducing shipping NOx and SOx emissions[J].Transportation Research Part D,2012,17(6):478-486.
[4]Psaraftis H N.Market-based measures for greenhouse gas emissions from ships:a review[J].WMU Journal of Maritime Affairs,2012,11(2):211-232.
[5]谭亲明,胡以怀,张旭升.现代船舶柴油机节能减排技术[J].环境工程,2015,33(205):76-80.Tan Qinming,Hu Yihuai,Zhang Xusheng.Modern energy conservation and emission reduction technology research of marine diesel engine[J].Environmental Engineering,2015,33(205):76-80.
[6]张全长.柴油机低温燃烧基础理论和燃烧控制策略的试验研究[D].天津:天津大学,2010.Zhang Quanchang.Experimental study on combustion fundamental theory and control strategy of diesel lowtemperature combustion[D].Tianjin:Tianjin University,2010.
[7]马小康,张付军,韩恺,等.进气氧浓度对柴油机燃烧过程影响的仿真研究[J].兵工学报,2014,35(7):945-952.Ma Xiaokang,Zhang Fujun,Han Kai,et al.Simulation study into effect of intake air oxygen concentration on combustion process in diesel engine[J].Acta Armamentarh,2014,35(7):945-952.
[8]刘贝,程晓北,董世军,等.柴油机部分预混合燃烧与排放特性的模拟与试验[J].内燃机学报,2014,32(6):496-504.Liu Bei,Cheng Xiaobei,Dong Shijun,et al.Simulation and experiment on PPC combutsion and emissions characteristics of diesel engine[J].Transactions of CSICE,2014,32(6):496-504.
[9]Amin M A,Zhar A A,Farid M.An experimental study on the influence of EGR rate and fuel octane number on the combustion characteristics of a CAI two-stroke cycle engine[J].Applied Thermal Engineering,2014,71(1):248-258.
[10]姚春德,刘增勇,何邦全,等.进气氮气含量对柴油机混合气形成与燃烧过程的影响[J].燃烧科学与技术,2002,8(3):233-237.Yao Chunde,Liu Zengyong,He Bangquan,et al.Influence of intake air mixed with N2 on combustion process in a diesel engine[J].Journal of Combustion Science and Technology,2002,8(3):233-237.
[11]韩锐,李宏刚,杨荣海,等.进气加湿对柴油机燃用不同牌号柴油NOx排放性能的影响[J].大连交通大学学报,2013,34(4):32-34.Han Rui,Li Honggang,Yang Ronghai,et al.Influence of water induction on NOx emission of diesel engine through air intake[J].Journal of Dalian Jiaotong University,2013,34(4):32-34.
[12]张伟,舒歌群,沈颖刚,等.EGR与进气富氧对直喷柴油机NO和碳烟排放的影响[J].内燃机学报,2012,30(1):16-21.Zhang Wei,Shu Gequn,Shen Yingang,et al.Influence of EGR and oxygen-enriched air on DI engine NOsmoke emission[J].Transactions of CSICE,2012,30(1):16-21.
[13]刘博,邓康耀,张哲,等.可调二级增压柴油机增压压力控制策略计算研究[J].内燃机工程,2011,32(4):17-22.Liu Bo,Deng Kangyao,Zhang Zhe,et al.Computational study on boost pressure control strategy for regulated two stage turbocharged diesel engine[J].Chinese Internal Combustion Engine Engineering,2011,32(4):17-22.
[14]申立中,王俊,刘少华,等.满足未来排放法规的车用增压技术[J].昆明理工大学学报,2014,39(6):63-73.Shen Lizhong,Wang Jun,Liu Shaohua,et al.Review of vehicle boosting technologies for future emissions regulations[J].Journal of Kunming University of Science and Technology,2014,39(6):63-73.
[15]黄开胜,张尧,刘刚,等.进气压力对发动机性能的影响研究[J].内燃机工程,2017,38(2):73-78.Huang Kaisheng,Zhang Yao,Liu Gang,et al.Research on influence of inlet pressure on diesel engine performance[J].Chinese Internal Combustion Engine Engineering,2017,38(2):73-78.