Dynamic analysis of emission spectra in HCCI combustion (Articolo in rivista)

Type
Label
  • Dynamic analysis of emission spectra in HCCI combustion (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.4271/2013-24-0042 (literal)
Alternative label
  • S.Lombardi, K.Bizon, G.Continillo, E.Mancaruso, B.M.Vaglieco (2013)
    Dynamic analysis of emission spectra in HCCI combustion
    in SAE technical paper series
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S.Lombardi, K.Bizon, G.Continillo, E.Mancaruso, B.M.Vaglieco (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Proceedings 11th International Conference on engines &Vehicles - ICE 2013 SAE Technical Paper 2013-24-0042 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • S.Lombardi - Università del Sannio (Italy) K.Bizon - Università del Sannio (Italy) G.Continillo - Università del Sannio (Italy) (literal)
Titolo
  • Dynamic analysis of emission spectra in HCCI combustion (literal)
Abstract
  • This work reports on the application of spectroscopic measurements coupled with data processing techniques in order to study, in terms of spectral emissions, the dynamic of the HCCI (Homogeneous charge compression ignition) combustion that occurs inside the combustion chamber of an optically accessible direct injection Diesel engine. A preprocessing of the recorded spectra is required for a correct analysis. The procedure of pre-processing consists of two main steps, that is: noise filtering with a technique based on the POD (Proper Orthogonal Decomposition); estimate and subtraction of the baseline. The analysis of the dynamics of the recorded spectra was carried out by the estimates of the synchronous and asynchronous 2D correlation spectra. These correlation spectra provide information on the correlation of the temporal changes of the spectral intensity among the different bands (or wavelength) of the recorded spectrum; therefore, they provide information on the temporal correlation between the various chemical species that present characteristic bands within the acquisition band. This paper reports on the analysis of the synchronous and asynchronous 2D spectra related to the emission spectra; in particular, attention is focused on the characteristic bands of radicals OH, CH and HCO. The analysis of the emission spectra reported in this work provides information that can be useful for understanding chemical mechanisms related with HCCIcombustion. (literal)
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