基于C链分布的乙醇汽油PN排放特性分析
Analysis of PN Emission Characteristics of Ethanol Gasoline Based on C-chain distribution
随着双碳政策推行，节能减排仍是当前之重。乙醇燃料在中期减排替代过程中承担着举足轻重的地位。乙醇燃料组分对于GDI发动机的PN排放的影响重大。基于一款国六发动机（未配备GPF）对不同组分的乙醇燃油进行测试分析，结果表明：气态排放中的THC排放与PN排放呈现正相关，这主要是由于未燃HC是冷凝易形成核态颗粒物，从而导致PN排放的增加；乙醇汽油中降低C7及以下碳数的链烷烃将有助减少PN排放，而C7+的链烷烃是有助于燃料燃烧和降低PN排放；降低乙醇汽油中C8+芳烃的占比将有效减少PN排放。
With the implementation of the dual carbon policy, energy conservation and emission reduction is still the current importance. Ethanol fuel plays an important role in the process of medium-term emission reduction substitution. Ethanol fuel composition has a great influence on PN emission of GDI engine. Based on a China VI engine ( not equipped with GPF ), different components of ethanol fuel were tested and analyzed. The results show that THC emissions in gaseous emissions are positively correlated with PN emissions. This is mainly due to the condensation of unburned HC, which is easy to form nuclear particles, resulting in an increase in PN emissions. The paraffins with lower carbon number of C7 and below in ethanol gasoline will help reduce PN emissions, while the paraffins with C7 + will help fuel combustion and reduce PN emissions. The proportion of C8 + aromatics in ethanol gasoline is one of the main factors affecting PN emission.
王长卉;孙运才;郭孔鲁;庞二喜;刘奇峰;孙兴玉;徐林勋;
山东京博新能源控股发展有限公司,滨州市,256000;山东京博新能源控股发展有限公司,滨州市,256000;山东京博新能源控股发展有限公司,滨州市,256000;山东京博新能源控股发展有限公司,滨州市,256000;山东京博新能源控股发展有限公司,滨州市,256000;山东京博新能源控股发展有限公司,滨州市,256000;山东京博新能源控股发展有限公司,滨州市,256000;
TK41
Ethanol PN emission Correlation Hydrocarbon Carbon distribution
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