| 侯献军，熊纳，王友恒，刘志恩.汽油/压缩天然气两用燃料发动机颗粒物排放特性研究[J].内燃机工程,2021,42(3):74-80. |
| Particulate Matter Emission Characteristics of Gasoline/Compressed Natural Gas Dual-Fuel Engine |
| DOI：10.13949/j.cnki.nrjgc.2021.03.011 |
| Key Words:dual-fuel engine compressed natural gas(CNG) particulate matter emission particle diameter distribution |
| Author Name | Affiliation | | HOU Xianjun, XIONG Na, WANG Youheng, LIU Zhien | 1.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University ofTechnology, Wuhan 430070， China
2.Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan 430070， China
3.Hubei Research Center for New Energy & Intelligent Connected Vehicle, Wuhan University of Technology, Wuhan 430070, China |
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| Abstract:The engine bench test was carried out on a 1.4L naturally aspirated dual fuel engine, and the particulate matter emission characteristics of two fuels, gasoline and compressed natural gas(CNG), were sampled and analyzed by DMS500 fast particle analyzer under different inlet pressure conditions with engine speed of 4000r/min. The experimental results show that the total particle number(PN) and particle mass(PM) concentrations of the two kinds of fuel decrease first and then increase with the increase of inlet pressure. The PN and PM emission of CNG are relatively stable under different inlet pressures. The nuclear particles in the PN account for a relatively large amount. At a particle size of about 200nm, the particle surface area concentration appears a peak. The accumulation state of gasoline emission particulate matter is dominant, so its PM concentration is greater than that of CNG, and its particulate matter surface area concentration is also greater, with the maximum surface area concentration appearing at about the particle size of 100nm. |
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