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Influence of injection parameters, ozone seeding and residual NO on a Gasoline Compression Ignition (GCI) engine at low load

Pinazzi, P.M ; Foucher, F

Proceedings of the Combustion Institute, 2017, Vol.36(3), pp.3659-3668 [Periódico revisado por pares]

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  • Título:
    Influence of injection parameters, ozone seeding and residual NO on a Gasoline Compression Ignition (GCI) engine at low load
  • Autor: Pinazzi, P.M ; Foucher, F
  • Assuntos: Ltc ; Gci ; Direct-Injection ; Ozone ; Engineering
  • É parte de: Proceedings of the Combustion Institute, 2017, Vol.36(3), pp.3659-3668
  • Descrição: The main objective of this work was to evaluate the potential of ozone to overcome the low load limitations of Direct-Injection Gasoline Compression Ignition (D-I GCI) engines. Experiments were performed in a single-cylinder diesel engine fuelled with directly-injected 95 RON gasoline at 2 bar IMEP. Engine speed was set to 1500 rpm. Intake pressure was set to 1 bar in order to investigate typical low load operating conditions. Chemical computation revealed that the O atoms coming from the O molecules and responsible for promoting fuel autoignition exhibited a maximum concentration near 30° before TDC. Experiments showed that a narrow umbrella angle extends the early injections range up to -60 CAD, better matching with ozone decomposition. Injection timing can be employed to better exploit the oxidizing effect of ozone, which proved to be dependent on local conditions of temperature, equivalence ratio,...
  • Idioma: Inglês

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