http://www.cnr.it/ontology/cnr/individuo/prodotto/ID37003
Knocking diagnostics in the combustion chamber of boosted port fuel injection spark ignition optical engine (Articolo in rivista)
- Type
- Label
- Knocking diagnostics in the combustion chamber of boosted port fuel injection spark ignition optical engine (Articolo in rivista) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Alternative label
Merola S.S., Sementa P., Tornatore C., Vaglieco B.M. (2009)
Knocking diagnostics in the combustion chamber of boosted port fuel injection spark ignition optical engine
in International journal of vehicle design
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Merola S.S., Sementa P., Tornatore C., Vaglieco B.M. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Scopu (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Istituto Motori, CNR, Napoli, Italy (literal)
- Titolo
- Knocking diagnostics in the combustion chamber of boosted port fuel injection spark ignition optical engine (literal)
- Abstract
- High spatial resolution optical techniques have been used to get
information about the timing and the location of knocking and about the
chemical species involved in this phenomenon. The experiments were realised
in the combustion chamber of a boosted single-cylinder spark ignition port-fuel
injection optical engine fuelled with commercial gasoline. Engine conditions
with different levels of knock were considered from the borderline case onto
standard knocking and heavy knocking. Cycle-resolved digital imaging was
used to follow the combustion and the flame propagation in normal combustion
and knocking conditions. Moreover, the effects of an abnormal combustion due
to the firing of fuel deposition near the intake valves and on the piston surface
were investigated. The knocking influence on the flame front propagation and
combustion speed was investigated following the time evolution of the mean
flame radius in the different engine conditions. The appearance of the autoignition
centres in the end gas during the knock was evaluated in terms of
timing, location and frequency of occurrence. Finally, UV-visible natural
emission spectroscopy was applied to detect radical species that marked the
knock. HCO and OH were identified as markers of the knocking onset and OH
of its intensity (literal)
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