Chemical Papers

, Volume 73, Issue 2, pp 455–468 | Cite as

Effect of polyoxymethylene dimethyl ethers on particle properties and diesel particulate filter regeneration

  • Jing Tian
  • Yixi CaiEmail author
  • Xiaoyu Pu
  • Linbo Gu
  • Yunxi Shi
  • Yingxin Cui
  • Runlin Fan
Original Paper


The emission tests were performed on a light-duty direct injection diesel engine. A polyoxymethylene dimethyl ethers (PODE) mixture was blended with diesel at a volume ratio of 0, 10, 20 and 30%, denoted as P0, P10, P20 and P30, respectively. The particle size distribution before and after the diesel particulate filter (DPF) was measured to evaluate the DPF filtering efficiency of various modal particles. The oxidation activity of the particles on the DPF intake end plane was analyzed by the Arrhenius method. The regeneration of the DPF was conducted using a non-thermal plasma (NTP) injection system. The results showed that blending PODE with diesel contributed to reducing the particle number concentrations. PODE adversely affected the improvement of the DPF filtering efficiency, especially that of P30. However, the DPF filtering efficiency of all fuels was still higher than 94%. Blending PODE with diesel increased the mass fraction of volatile substances (VS) and decreased the mass fraction of dry soot. Particles of P20 showed a better oxidation activity with lower apparent activation energy. In addition, PODE increased the DPF regeneration effect by NTP technology. The deposit removal mass of the DPF rose to the peak level and then decreased as the PODE blending ratio increased. The better DPF regeneration effect was observed when P20 was employed.


Polyoxymethylene dimethyl ethers Diesel particulate filter Regeneration Non-thermal plasma Particles 

List of symbols


Polyoxymethylene dimethyl ethers


Diesel particulate filter


Non-thermal plasma


Volatile substances


Dry soot


Particulate matter


Soluble organic fraction


Ultra-low sulfur diesel


Biodiesel fuel


20% biodiesel/diesel blends


Fischer–Tropsch fuel


Carbon monoxide


Carbon dioxide


Nitrogen oxide




Differential thermogravimetric


Low heating values




10% PODE/diesel blends


20% PODE/diesel blends


30% PODE/diesel blends


Indirect non-thermal plasma


Cetane number


Polycyclic aromatic hydrocarbons


Engine exhaust particle sizer spectrometer


Dielectric barrier discharge


Characteristic particle size of PM


The particle filtering efficiency of the DPF


The particle total number concentration


Apparent activation energy


The mass of reactants at the time of t


The time of the heating process


The pre-exponential factor


The partial pressure of oxygen


The gas constant


The reaction temperature


The removal mass of C in CO


The removal mass of C in CO2


The volume fraction of CO


The volume fraction of CO2


The molar mass of C


The flow rate of the active gas


The gas molar volume


The sum of m(C1) and m(C2)


Dimethyl carbonate


Dimethyl ether





This work was financially supported by the National Natural Science Foundation of China (No. 51676089), the Key University Science Research Project of Jiangsu Province (No. 16KJA470002), the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and the Science Research Project of Xuzhou Institute of Technology (No. XKY2016223).


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Copyright information

© Institute of Chemistry, Slovak Academy of Sciences 2018

Authors and Affiliations

  1. 1.School of Automotive and Traffic EngineeringJiangsu UniversityZhenjiangChina
  2. 2.School of Mechanical and Electrical EngineeringXuzhou Institute of TechnologyXuzhouChina

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