柴油机燃用汽油/F-T柴油混合燃料的循环变动特性
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- 英文论文题名：Cyclic Variation Characteristics of Diesel Engine Fueled with Petrol/F-T Diesel Blend
- 论文作者：吴子龙 ; 朱建军 ; 韩卫 ; 苏志伟 ; 郭宇杰
- 英文论文作者：Wu Zilong ; Zhu Jianjun ; Han Wei ; Su Zhiwei ; Guo Yujie ; Department of Vehicle Engineering ; Taiyuan University of Technology
- 年：2016
- 作者机构：太原理工大学车辆工程系;
- 论文关键词：柴油机 ; 混合燃料 ; 汽油 ; F-T柴油 ; 循环变动 ; 爆燃
- 英文论文关键词：diesel ; blended fuel ; petrol ; F-T diesel ; cyclic variation ; knock
- 会议召开时间：2016-10-26
- 会议录名称：2016中国汽车工程学会年会论文集
- 英文会议录名称：Proceedings of 2016 SAE-China Congress
- 语种：中文
- 分类号：U464.172
- 学会代码：QCGC
- 会议名称：2016中国汽车工程学会年会暨展览会
- 会议地点：中国上海
- 主办单位：中国汽车工程学会
- 学会名称：中国汽车工程学会
- 页数：5
- 文件大小：637k
- 原文格式：O
- 会议级别：全国
摘要
通过柴油机燃用汽油/F-T柴油混合燃料试验,研究汽油/F-T柴油混合燃料发动机的循环变动特性。在18°CA BTDC、20°CA BTDC、22℃A BTDC三种供油时刻下,采集发动机在平均有效压力BMEP为0.22MPa、0.43MPa、0.60MPa三种负荷下的缸压信号,研究发动机循环变动特性和爆燃程度,并结合小波变换分析燃烧稳定性和爆燃系数。发现负荷的增加会降低CoVp_i和爆燃系数KF;相同负荷下,供油时刻为20°CA BTDC时,CoVp_i最小,BMEP=0.43MPa时,KF低于其他供油时刻,并且最高压力p_(max)与滞燃期(θ_d)的相关系数达到最高0.76。p_(max)在大尺度小波变换下频率响应非常明显,其幅值变化量与CoVp_i相吻合。通过匹配合适的供油时刻和负荷工况,可以将汽油/F-T柴油混合燃料柴油机循环变动控制在合理范围内。
The cyclic variation characteristics of diesel engine fueled with petrol/F-T diesel blend were researched through experiments of engine bench.The cylinder pressure signals were gathered at 18° CA BTDC,20° CA BTDC,22° CA BTDC three fuel supply timings and 0.22 MPa,0.43 MPa,0.60 MPa three BMEP conditions,to research the cyclic variation characteristics and knock,and analyze the combustion stability and knock coefficient(KF) with the wavelet transform.The results show that the coefficient of variation of p_i(CoV p_i) and KF decrease with increasement of load;at the same load condition,CoV p_i is minimum at 20° CA BTDC,and KF is lower than other fuel supply timings when BMEP = 0.43 MPa,and the correlation coefficient of p_(max) and θ_d to be maximum of0.76.The frequency response of p_(max) in large scale wavelet transform is very obvious and the amplitude change is in agreement with CoVp_i.The cyclic variation of diesel engine fueled with petrol/F-T diesel blend can be controlled within reasonable range by matching the appropriate fuel supply timing and load condition.
The cyclic variation characteristics of diesel engine fueled with petrol/F-T diesel blend were researched through experiments of engine bench.The cylinder pressure signals were gathered at 18° CA BTDC,20° CA BTDC,22° CA BTDC three fuel supply timings and 0.22 MPa,0.43 MPa,0.60 MPa three BMEP conditions,to research the cyclic variation characteristics and knock,and analyze the combustion stability and knock coefficient(KF) with the wavelet transform.The results show that the coefficient of variation of p_i(CoV p_i) and KF decrease with increasement of load;at the same load condition,CoV p_i is minimum at 20° CA BTDC,and KF is lower than other fuel supply timings when BMEP = 0.43 MPa,and the correlation coefficient of p_(max) and θ_d to be maximum of0.76.The frequency response of p_(max) in large scale wavelet transform is very obvious and the amplitude change is in agreement with CoVp_i.The cyclic variation of diesel engine fueled with petrol/F-T diesel blend can be controlled within reasonable range by matching the appropriate fuel supply timing and load condition.
引文
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[1]Ma Lincai,Liu Daxue,Zhou Zhiguo,et al.Physical and chemical and soot emission characteristics of biodieseldiesel blend fuel[J].Journal of Fuel Chemistry and Technology,2011,39(8):600-604.
[2]黄勇成,周龙保,潘克煜,等.柴油机燃用F-T柴油与0号柴油混合燃料的燃烧特性[J].燃烧科学与技术,2006,12(4):329-334.
[2]Huang Yongcheng,Zhou Longbao,Pan Keyu,et al.Combustion Characteristics of Direct Injection Diesel Engine Operating on Blends of No.0 Diesel and FischerTropsch Diesel[J].Journal of Combustion Science and Technology,2006,12(4):329-334.
[3]梅德清,任华,姜士阳,等.DMC/柴油混合燃料共轨柴油机燃烧循环变动研究[J].农业机械学报,2014,45(8):14-18.
[3]Mei Deqing,Ren Hua,Jiang Shiyang,et al.Combustion Cyclic Variations of Common-rail Diesel Engine Fueled with DMC/Diesel blend[J].Transactions of the Chinese Society for Agricultural Machinery,2014,45(8):14-18.
[4]王建昕,帅石金.汽车发动机原理[M].北京:清华大学出版社,2011.228-231.
[4]Wang Jianxin,Shuai Shijin.Automotive Engine Fundamentals[M].Beijing:Tsinghua university press,2011.228-231.
[5]王丁丁,王铁,冯星,等.不同比例甲醇柴油对柴油机循环变动的影响[J].小型内燃机与摩托车,2013,42(1):61-64.
[5]Wang Dingding,Wang Tie,Feng Xing,et al.Effect of Different Proportion of Methanol Diesel Blended Fuel on Cycle-by-Cycle Variation of Turbocharged Diesel Engine[J].Small Internal Combustion Engine and Motorcycle,2013,42(1):61-64.
[6]吕兴才,杨剑光,张武高,等.乙醇-柴油混合燃料的理化特性研究[J].内燃机学报,2004,22(4):289-295.
[6]Lv Xingcai,Yang Jianguang,Zhang Wugao,et al.Research on Physical and Chemical Properties of EthanolDiesel Blend Fuel[J].Transactions of CSICE,2004,22(4):289-295.
[7]李跟宝,周龙保.二甲醚/柴油混合燃料在压燃式发动机上的应用[J].中国公路学报,2008,21(6):109-113.
[7]Li Genbao,Zhou Longbao.Application of Dimethyl Ether/Diesel Blended Fuel Used for Compression Ignition Engine[J].China Journal of Highway and Transport,2008,21(6):109-113.
[8]宋清双,李跟宝,周龙保,等.柴油机燃用二甲醚/柴油混合燃料时的性能与排放研究[J].西安交通大学学报,2006,40(3):294-297.
[8]Song Qingshuang,Li Genbao,Zhou Longbao,et al.Study on Performances and Emission Characteristics of Direct Injection Diesel Engine Fueled with Blend Dimethyl Ether/Diesel Fuel[J].Journal of XI'AN Jiaotong University,2006,40(3):294-297.
[9]郑建军,黄佐华,王金华,等.直喷式天然气发动机不同压缩比下燃烧循环变动规律[J].内燃机学报,2011,29(2):98-100.
[9]Zheng Jianjun,Huang Zuohua,Wang Jinhua,et al.Effect of Compression Ratio on Cycle-by-Cycle Variations in a Direct Injection Natural Gas Engine[J].Transactions of CSICE,2011,29(2):98-100.
[10]姚宝峰,李国岫.天然气发动机燃烧循环变动特征参数分析研究[J].内燃机工程,2007,28(4):2-5.
[10]Yao Baofeng,Li Guoxiu.Study on Characteristic Parameters of Cycle-to-Cycle Combustion Variations in Natural Gas Engine[J].Chinese Internal Combustion Engine Engineering,2007,28(4):2-5.