Welcome to Journal of Automotive Safety and Energy,
汽车安全与节能学报

Journal Of Automotive Safety And Energy ›› 2016, Vol. 07 ›› Issue (04): 355-370.DOI: 10.3969/j.issn.1674-484.2016.04.002

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Review of fuel properties impacting on primary particulate emissions and secondary particulate formation from gasoline direct injection engines

WANG Yinhui1, SHUAI Shijin1,2, ZHANG Wenbin1, MA Xiao1, XU Hongming1   

  1. 1. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China;
    2. Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing 100081, China
  • Received:2016-10-16 Online:2016-12-25 Published:2016-12-28
  • Supported by:

    国家“九七三”重点基础研究资助项目（2013CB228502）；国家自然科学基金重点资助项目(51636003)

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Abstract:

The impact of fuel composition on primary particulate emissions from GDI engines and subsequent formation of secondary particles in atmosphere has received global attention. This paper gives a comprehensive overview of the impact of fuel properties on primary and secondary particulate formation from GDI engines. It is shown that higher aromatics content in gasoline fuel results in higher particulate emissions, higher polycyclic aromatic hydrocarbons (PAH) in particles and higher volatile organic compounds (VOC) emissions as well as more secondary organic aerosol (SOA). The SOA formation, which mainly comes from VOC and PAH emissions, is much higher than primary particulate emissions from gasoline engines. However, the evolution characteristics of the emissions in tailpipe and the mechanisms of the SOA formation from gasoline engines in air have not been understood completely.

Key words: gasoline engines direct injection (GDI), fuel properties, primary particulate, secondary organic aerosol (SOA)