http://www.cnr.it/ontology/cnr/individuo/prodotto/ID276028
Experimental investigation in an optically accessible diesel engine of a fouled piezoelectric injector (Articolo in rivista)
- Type
- Label
- Experimental investigation in an optically accessible diesel engine of a fouled piezoelectric injector (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- MAGNO A., MANCARUSO E., VAGLIECO B.M. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Titolo
- Experimental investigation in an optically accessible diesel engine of a fouled piezoelectric injector (literal)
- Abstract
- This case study is aimed to investigate how the injector fouling can influence both the injection system
and engine performances. In particular, the presence of deposits in the nozzle of the injector could affect
the injection system performance along its life. The investigation was carried out on transparent
compression ignition engine equipped with the head of a commercial multi-cylinder engine and secondgeneration
common rail injection system. Two indirect-acting piezoelectric injectors were tested: one
new another fouled. Optical engine was fueled with diesel and tests were performed with engine
running in continuous mode. Two operating conditions were investigated. The new and fouled piezo
injectors were characterized by injection rate profiles. The injection and combustion phases were
investigated by optical measurements. Two-color pyrometry was used to analyze the pollutants formation
and exhaust emission. Experimental results showed that the fouled injector has slower dynamic
response and it injects a smaller amount of fuel during the main event. It has shorter jets penetration and
wider spray angle that affect in negative way the mixing formation and the combustion evolution. High
temperature regions and high sooting flames are detected for the fouled injector. Therefore, it emits high
nitrogen oxides and particulate matter at the engine exhaust. (literal)
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