燃料着火性及挥发性对柴油机超细微粒排放的影响
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摘要
针对高压共轨柴油机燃用不同组分调和柴油时的颗粒物排放特性,通过将直馏柴油、加氢柴油及煤油等调和组分按不同比例进行配比调节燃料的着火性及挥发性,制取了不同理化特性的试验燃料,试验研究柴油燃料理化特性对超细颗粒物数量、成分及微观形貌的影响规律,揭示燃料着火性及挥发性对颗粒物生成及演化的影响机理。研究结果表明,降低燃料着火性或改善挥发性能够降低粒径较大的积聚态微粒数量,但会使小粒径的核态微粒数量增加,且颗粒中DS比例降低,SOF比例升高。同时,随燃料十六烷值降低,排气中大尺寸团簇状颗粒物数量明显减少。
The effects of fuel components on particulate matter emissions were studied on a high pressure common rail diesel engine fueled with different diesel fuels. Six kinds of diesel fuels with various volatility and ignitability were selected in this test. Particle number, composition and morphology were studied with various physicochemical property diesel fuels. The results show that lower ignitability fuel and stronger volatility fuel could reduce the accumulation mode particle number, while the nucleation mode particle number would increase. Meanwhile, the proportion of DS might decrease with the SOF increase. With the decrease of the fuel cetane number, the number of large cluster particles in the exhaust decreased obviously.
The effects of fuel components on particulate matter emissions were studied on a high pressure common rail diesel engine fueled with different diesel fuels. Six kinds of diesel fuels with various volatility and ignitability were selected in this test. Particle number, composition and morphology were studied with various physicochemical property diesel fuels. The results show that lower ignitability fuel and stronger volatility fuel could reduce the accumulation mode particle number, while the nucleation mode particle number would increase. Meanwhile, the proportion of DS might decrease with the SOF increase. With the decrease of the fuel cetane number, the number of large cluster particles in the exhaust decreased obviously.
引文
1 Timothy V Johnson.Diesel emission control in review[C].SAEPaper 2008-01-0069
2 Rubino L,Phillips P R,Twigg M V.Measurements of ultrafine particle number emissions from a light-duty diesel engine using SMPS,DMS,ELPI and EEPS[C].SAE Paper 2005-24-015
3 Kreyling Wolfgang G,Semmler-Behnke Manuela,M觟ller Winfried.Health implications of nanoparticles[J].Journal of Nanoparticle Research,2006,8(5):543-562
4 N.J.Khatri,J.H.Johnson.Partical size distribution characterization of diesel particulate matter and the study of the coagulation pocess[C].SAE Paper 780788
5赖春杰,孙万臣,李国良,等.生物柴油混合燃料对车用高压共轨柴油机微粒排放粒度分布的影响[J].汽车工程学报,2011,1(2):53-59
6 H.Burtscher.Physical characterization of particulate emissions from diesel engines:a review[J].Aerosol Science,2005,36:896-932
7 Yuichi Goto,Terunao Kawai.Real-time measurement of particle size distribution from diesel engines equipped with continuous regenerative DPF under a transient driving condition[C].SAE Paper 2004-01-1984
8 Imad A.Khalek.Characterization of particle size distribution of a heavy-duty diesel engine during FTP transient cycle using ELPI[C].SAE Paper 2000-01-2001
9 Qin Yanhong,Peng Jianfei,Niu He,et al.The impact of fuel properties from Chinese market on the particulate and VOCs emissions of a PFI and a DIG engine[C].SAE Paper 2016-01-0838
2 Rubino L,Phillips P R,Twigg M V.Measurements of ultrafine particle number emissions from a light-duty diesel engine using SMPS,DMS,ELPI and EEPS[C].SAE Paper 2005-24-015
3 Kreyling Wolfgang G,Semmler-Behnke Manuela,M觟ller Winfried.Health implications of nanoparticles[J].Journal of Nanoparticle Research,2006,8(5):543-562
4 N.J.Khatri,J.H.Johnson.Partical size distribution characterization of diesel particulate matter and the study of the coagulation pocess[C].SAE Paper 780788
5赖春杰,孙万臣,李国良,等.生物柴油混合燃料对车用高压共轨柴油机微粒排放粒度分布的影响[J].汽车工程学报,2011,1(2):53-59
6 H.Burtscher.Physical characterization of particulate emissions from diesel engines:a review[J].Aerosol Science,2005,36:896-932
7 Yuichi Goto,Terunao Kawai.Real-time measurement of particle size distribution from diesel engines equipped with continuous regenerative DPF under a transient driving condition[C].SAE Paper 2004-01-1984
8 Imad A.Khalek.Characterization of particle size distribution of a heavy-duty diesel engine during FTP transient cycle using ELPI[C].SAE Paper 2000-01-2001
9 Qin Yanhong,Peng Jianfei,Niu He,et al.The impact of fuel properties from Chinese market on the particulate and VOCs emissions of a PFI and a DIG engine[C].SAE Paper 2016-01-0838