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Inner Selective Non-Catalytic Reduction Strategy for Nitrogen Oxides Abatement: Investigation of Ammonia Aqueous Solution Direct Injection with an SI Engine Model

Author

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  • Fengshuo He

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
    College of Automotive Engineering, Jilin University, Changchun 130022, China)

  • Xiumin Yu

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
    College of Automotive Engineering, Jilin University, Changchun 130022, China)

  • Yaodong Du

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
    College of Automotive Engineering, Jilin University, Changchun 130022, China)

  • Zhen Shang

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
    College of Automotive Engineering, Jilin University, Changchun 130022, China)

  • Zezhou Guo

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
    College of Automotive Engineering, Jilin University, Changchun 130022, China)

  • Guanting Li

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
    College of Automotive Engineering, Jilin University, Changchun 130022, China)

  • Decheng Li

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
    College of Automotive Engineering, Jilin University, Changchun 130022, China)

Abstract

This study contributes to a method based on an aqueous solution of ammonia direct injection for NO x emissions control from internal combustion engines. Many previously published studies about deNO x technology are based on selective catalytic reduction (SCR), but only few deal with inner selective non-catalytic reduction (inner SNCR) technology, which is an intensive improvement of selective non-catalytic reduction (SNCR) applied in the in-cylinder purification procedure. Before numerical calculations were carried out, the computational fluid dynamic (CFD) simulation model was validated with steady-state experimental results. The main results revealed that with the increasing concentration of aqueous solution of ammonia, nitrogen oxides gradually decrease, and the largest decline of NO x is 65.1% with little loss of cylinder peak pressure. Unburned hydrocarbon (UHC) and carbon monoxide (CO) may increase using inner SNCR, and soot emissions show a decreased tendency. However, there is little change when ammonia content varies. Ulteriorly, refining the direct injection phase is of great help to inner SNCR technology to enhance the reduction of NO x and reduce NH 3 oxidation and NH 3 slipping.

Suggested Citation

  • Fengshuo He & Xiumin Yu & Yaodong Du & Zhen Shang & Zezhou Guo & Guanting Li & Decheng Li, 2019. "Inner Selective Non-Catalytic Reduction Strategy for Nitrogen Oxides Abatement: Investigation of Ammonia Aqueous Solution Direct Injection with an SI Engine Model," Energies, MDPI, vol. 12(14), pages 1-18, July.
  • Handle: RePEc:gam:jeners:v:12:y:2019:i:14:p:2742-:d:249263
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    References listed on IDEAS

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