Exhaust emission characteristics of a diesel engine on gasoline fumigation: an experimental investigation and evaluation using the MCDM method

  • M. Hoseinpour
  • H. SadrniaEmail author
  • B. Ghobadian
  • M. Tabasizadeh
Original Paper


The multi-criteria decision-making method was used to comprehensively evaluate exhaust gas emission characteristics of a diesel engine, while gasoline fumigation was added to reduce pollutant emissions under different operating conditions, namely engine loads (1.9–6.2 bar) and engine speeds (1300 and 2000 rpm). Experiments were performed on a multi-cylinder diesel engine with a mechanically controlled fuel injection pump. The experimental results show that using partially premixed gasoline, the specific NOx and CO2 emissions decrease to about 28 and 7% (averaged over all engine loads), respectively, in comparison with the pure diesel case, while smoke opacity decreases up to 50% at high loads with premixed gasoline. However, increase in the specific CO and HC emissions has been found by applying the same strategy at all loading conditions. The optimum conditions with desirable or minimum emissions characteristics were operation modes with gasoline fumigation at 2.1 bar engine load for 1300 rpm and at 3.8 bar engine load for 2000 rpm. Thus, gasoline fuel as premixed fuel with the fumigation method showed a favorable potential in terms of reducing the main emissions in diesel engines.


Diesel engine Exhaust emissions Gasoline fumigation MCDM method 



The authors wish to acknowledge the Head of the Department of Biosystems Engineering of the Ferdowsi University of Mashhad and all who supported and assisted in conducting this study.


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Copyright information

© Islamic Azad University (IAU) 2018

Authors and Affiliations

  • M. Hoseinpour
    • 1
  • H. Sadrnia
    • 1
    Email author
  • B. Ghobadian
    • 2
  • M. Tabasizadeh
    • 1
  1. 1.Department of Biosystems EngineeringFerdowsi University of MashhadMashhadIran
  2. 2.Department of Biosystems EngineeringTarbiat Modares UniversityTehranIran

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